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ContractorWith over 17 years of experience preparing candidates for the contractor exams for the trade and Business, Law and Management, Contractor School Online (CSO) is your primary resource to help you pass your State Contractor License Exam! We offer online practice tests, study materials, books, CD-ROMs, crash courses and more.

To become a certified contractor in Arizona, you must pass a Business and Law exam. Depending on the classification you need, you may need to pass a trade exam as well. If you are unsure what your classification requires, please use our Information Request Form .

Contractor School Online (CSO) will assist you with their professional consultants and provide study materials, also practice tests for the Business, Law, and Management and your trade if available. If purchases are made elsewhere make sure the correct author, title and year are appropriate for the trade.

CSO Business and Law Practice Test coincides with the required State Contractor’s Manual.

Please note: Inventory Pricing - Contractors State Bonding and Subjects may change without notice.

Arizona-AZ Business, Law and Management Online Practice Test ($85) Content
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  • 3 Months Access, Available 24/7

Arizona-AZ Business, Law and Management Manual ($75) Content
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Arizona-AZ Business, Law and Management Combo Package ($140)
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Arizona-AZ Alarms/Security Systems Online Practice Test ($85) Content
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  • 3 Months Access, Available 24/7

Arizona-AZ B General Residential and B-2 General Small Commercial Contractor License Online Practice Test ($95) Content
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  • 3 Months Access, Available 24/7

Arizona-AZ C-61 Limited Remodeling & Repair Contractor (Residential) L-61 Carpentry, Remodeling & Repairs (Commercial) & B-3 General Remodeling & Repair Contractor (Residential) License Online Practice Test ($85) Content
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Arizona-AZ Concrete License Online Practice Test ($85) Content
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Arizona-AZ Electrical License Online Practice Test ($95) Content
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  • 3 Months Access, Available 24/7

Arizona-AZ Electrical/Low Voltage License Online Practice Test ($95) Content
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Arizona-AZ Finish Carpentry License Online Practice Test ($95) Content
  • Arizona-AZ Finish Carpentry License Online Practice Test

Arizona-AZ Framing and Rough Carpentry Online Practice Test ($85) Content
  • 3 Months Access, Available 24/7
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Arizona-AZ General Engineering-A License Online Practice Test ($95) Content
  • 3 Months Access, Available 24/7
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Arizona-AZ HVAC-Heating and Air Conditioning License Online Practice Test ($95) Content
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  • 3 Months Access, Available 24/7

Arizona-AZ Low Voltage License Online Practice Test ($95) Content
  • Arizona-AZ-Low Voltage License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Masonry, Bricks and Blocks License Online Practice Test ($85) Content
  • 3 Months Access, Available 24/7
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Arizona-AZ Painting and Wallcovering License Online Practice Test ($95) Content
  • Arizona-AZ Painting and Wallcovering Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Plumbing License Online Practice Test ($95) Content
  • Arizona-AZ-Plumbing License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Refrigeration Online Practice Test ($85) Content
  • Arizona-AZ Refrigeration Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Reinforced Steel Online Practice Test ($85) Content
  • Arizona-AZ Reinforced Steel Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Remodeling and Repair Contractor License Online Practice Test ($85) Content
  • Arizona-AZ-Remodeling and Repair Contractor License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Residential and Small Commercial License Online Practice Test ($85) Content
  • Arizona-AZ-Residential and Small Commercial License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Roofing License Online Practice Test ($95) Content
  • 3 Months Access, Available 24/7
  • Arizona-AZ Roofing License Online Practice Test

Arizona-AZ Welding License Online Practice Test ($85) Content
  • Arizona-AZ Welding License Online Practice Test



Arizona-AZ B General Residential and B-2 General Small Commercial Contractor License Combo Package #1 ($220)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Business, Law and Management Manual
  • Arizona-AZ B General Residential and B-2 General Small Commercial Contractor License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ B General Residential and B-2 General Small Commercial Contractor License Combo Package #2 ($140)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ B General Residential and B-2 General Small Commercial Contractor License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ C-61 Limited Remodeling & Repair Contractor (Residential) L-61 Carpentry, Remodeling & Repairs (Commercial) & B-3 General Remodeling & Repair Contractor (Residential) License Combo Package #1 ($220)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Business, Law and Management Manual
  • Arizona-AZ C-61 Limited Remodeling & Repair Contractor (Residential) L-61 Carpentry, Remodeling & Repairs (Commercial) & B-3 General Remodeling & Repair Contractor (Residential) License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ C-61 Limited Remodeling & Repair Contractor (Residential) L-61 Carpentry, Remodeling & Repairs (Commercial) & B-3 General Remodeling & Repair Contractor (Residential) License Combo Package #2 ($140)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ C-61 Limited Remodeling & Repair Contractor (Residential) L-61 Carpentry, Remodeling & Repairs (Commercial) & B-3 General Remodeling & Repair Contractor (Residential) License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Electrical License Combo Package #1 ($220)
  • Arizona-AZ-Business, Law and Management Online Practice Test
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  • Arizona-AZ-Electrical License Online Practice Test
  • 3 Months Access, Available 24/7

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  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Electrical License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ HVAC-Heating and Air Conditioning Contractor License Combo Package #1 ($220)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Business, Law and Management Manual
  • Arizona-AZ HVAC-Heating and Air Conditioning License Online Practice Test
  • 3 Months Access, Available 24/7

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  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ HVAC-Heating and Air Conditioning License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Low Voltage License Combo Package #1 ($220)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Business, Law and Management Manual
  • Arizona-AZ-Low Voltage License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Low Voltage License Combo Package #2 ($140)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Low Voltage License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Painting and Wallcovering License Combo Package #1 ($140)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ Painting and Wallcovering Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Painting and Wallcovering License Combo Package #2 ($220)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Business, Law and Management Manual
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  • 3 Months Access, Available 24/7

Arizona-AZ Plumbing License Combo Package #1 ($140)
  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Plumbing License Online Practice Test
  • 3 Months Access, Available 24/7

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  • Arizona-AZ-Business, Law and Management Manual
  • Arizona-AZ-Plumbing License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Remodeling and Repair Contractor License Combo Package #1 ($220)
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  • Arizona-AZ-Remodeling and Repair Contractor License Online Practice Test
  • 3 Months Access, Available 24/7

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  • Arizona-AZ-Remodeling and Repair Contractor License Online Practice Test
  • 3 Months Access, Available 24/7

Arizona-AZ Residential and Small Commercial License Combo Package #1 ($220)
  • Arizona-AZ-Business, Law and Management Online Practice Test
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  • Arizona-AZ-Residential and Small Commercial License Online Practice Test
  • 3 Months Access, Available 24/7

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  • Arizona-AZ-Business, Law and Management Online Practice Test
  • Arizona-AZ-Residential and Small Commercial License Online Practice Test
  • 3 Months Access, Available 24/7

 

 What are the contractor license classifications?

The Board issues separate licenses for commercial and residential work, and dual licenses that cover both commercial and residential, for each particular trade or field of the construction profession. Residential contracting is defined as construction on residential structures such as houses, townhouses, condominiums or cooperative units and apartment complexes of four units or less. Residential construction also includes any appurtenances on or within residential property lines, connection to utility service and sewer lines, meters and mechanical or structural service for any residential structure.

COMMERCIAL construction is anything other than RESIDENTIAL - Jump to Class: A B C K L

ENGINEERING CONTRACTING (COMMERCIAL) A- A-03 A-04 A-05 A-07 A-09 A-11 A-12 A-14 A-15 A-16 A-17 A-19 A-21 AE

A-GENERAL ENGINEERING

Construction in connection with fixed works, including streets, roads, power and utilities plants, dams, hydroelectric plants, sewage and waste disposal plants, bridges, tunnels, and overpasses. Also included are the scopes of work allowed by all of the other engineering classifications, A-3 through A-21.

A-03 BLASTING

The use of explosives and explosive devices for excavation, demolition, geological exploration, mining, or any construction related blasting. Included is any drilling, boring, or earth moving required for the placement of explosive charges, the erection of temporary shelters, barricades and associated protective devices, equipment, and enclosures.

A-04 DRILLING

Drilling includes horizontal and vertical drilling or boring, constructing, deepening, repairing, or abandoning wells; exploring for water, gas, and oil; and constructing dry wells, and monitor wells. Also included is the erection of rigs, derricks and related substructures, and installation, service and repair of pumps and pumping equipment.

A-05 EXCAVATING, GRADING AND OIL SURFACING

Movement and alteration of earthen material by digging, horizontal boring, trenching, grading, or compacting the material for a cut, fill, grade, or trench. Included is the placement of shoring, the oiling of base materials, and incidental blasting and drilling, excludes excavating for water, gas, and oil wells.

A-07 PIERS AND FOUNDATIONS

Installation of piers, foundation, concrete, rebar and other materials common to the industry, includes pile driving, excavation, forming and other techniques and equipment common to the industry.

A-09 SWIMMING POOLS

Construction, service, and repair of swimming pools and spas, including water and gas service lines from point of service to pool equipment, wiring from pool equipment to 1st readily accessible disconnect, pool piping, fittings, backflow prevention devices, waste lines, and other integral parts of a swimming pool or spa.  Also included is the installation of swimming pool accessories, covers, safety devices, and fencing for protective purposes, if in the original contract.

A-11 STEEL AND ALUMINUM ERECTION

Field fabrication, erection, repair, and alteration of architectural and structural steel and aluminum materials common to the industry, including field layout, cutting, assembly, and erection by welding, bolting, wire tying or riveting. 

A-12 SEWERS, DRAINS AND PIPE LAYING

Installations, repairs of any project involving sewer access holes, The laying of pipe for storm drains, water and gas lines, irrigation, and sewers. Includes connecting sewer collector lines to building drains and the installation of septic tanks, leaching lines, dry wells, and all necessary connections, and related excavation and backfilling

A-14 ASPHALT PAVING

Installation of asphalt paving, and related fine grading on streets, highways, driveways, parking lots, tennis courts, running tracks, play areas, and gas station driveways and areas, using materials and accessories common to the industry. Includes excavating, grading only for height adjustments of existing sewer access holes, storm drains, water valves, sewer cleanouts, and drain gates.

A-15 SEAL COATING

Application of seal coating to asphalt paving surface, includes repair of surface cracks and application of painted marking symbols.

A-16 WATERWORKS

All work necessary for the production and distribution of water including drilling well, setting casing and pump, related electrical work, related concrete work, excavating, piping for storage and distribution, storage tanks, related fencing, purification and chlorination equipment.

A-17 ELECTRICAL AND TRANSMISSION LINES

Installation, alteration, and repair of transmission lines on public right-of-ways, including erection of poles, guying systems, tower line erection, street lighting of all voltages, and all underground systems including ducts for signal, communication, and similar installations. Installing transformers, circuit breakers, capacitors, primary metering devices and other related equipment of all electrical construction is included.  All electrical systems of less than 600 volts on or inside a building are excluded.

A-19 SWIMMING POOLS, INCLUDING SOLAR

Construction, service, and repair of swimming pools and spas, with or without solar water heating devices, including water and gas service lines from point of service to pool equipment, wiring from pool equipment to first readily accessible disconnect, pool piping, fittings, backflow prevention devices, waste lines and other integral parts of a swimming pool, spa and attached solar water heating device.  Also included are swimming pool accessories, covers, safety devices, and fencing for protective purposes, if in the original contract.

A-21 LANDSCAPING AND IRRIGATION SYSTEMS

Treat, condition, prepare, and install topsoil. Plant all decorative vegetation. Excavate, trench, bore, backfill and grade as necessary for installation of landscaping and irrigation systems. Landscaping includes installation of non-loadbearing slabs, walkways and areas using concrete, brick, stone, or gravel; wooden decks; decorative garden walls, fences and screens up to 6 feet in height; retaining walls up to 3 feet in height; and all other materials and equipment common to the industry.

Excluded is cast-in-place or tilt concrete; load bearing walls for structures; and perimeter fencing along property lines or boundaries.

Install, repair, and maintain irrigation systems to distribute water for the purpose of irrigation, dust and soil erosion control using equipment, materials, and fittings common to the industry. This includes electrical control panels and apparatus which are an integral part of the irrigation system.

Connections to potable water lines, installation of backflow prevention devices, installation of hose bibs and installation of service lines from source of supply are permitted only when they are an integral part of the irrigation system.

Installation of electric wiring and related fixtures of 110 volts or less for landscaping projects is included. All electrical work is limited to exterior use and only that work necessary to complete a landscaping project.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel. AE- (as restricted by State Board)

GENERAL COMMERCIAL CONTRACTING - Jump to Class: A B C K L or select the license type:

B- BE- B-01 B-02 B-03 B-04 B-04R B-05 B-05R B-06 B-10

B-01 GENERAL COMMERCIAL CONTRACTOR

Construction, alteration, and repair in connection with any structure built, being built, or to be built for the support, shelter, and enclosure of persons, animals, chattels, or movable property of any kind. This scope includes the supervision of all or any part of the above and includes the management, or direct or indirect supervision of any work performed.

This scope includes most of the L scopes except as they relate to electrical, plumbing, air conditioning systems, boilers, swimming pools, spas, and roofing (except shingles and shakes) which must be subcontracted to an appropriately licensed contractor.

B-02 GENERAL SMALL COMMERCIAL CONTRACTOR

Small commercial construction in connection with any new structure or addition built, being built, or to be built for the support, shelter and enclosure of persons, animals, chattels or movable property of any kind. This scope includes the supervision of all or any part of the above and includes the management or direct or indirect supervision of any work performed.

This scope includes most of the L scopes except as they relate to electrical, plumbing, air conditioning systems, boilers, swimming pools, spas, and roofing (except shingles and shakes) which must be subcontracted to an appropriately licensed contractor.

Small commercial construction means construction, remodeling, or repair of commercial projects for which the price of materials and labor does not exceed $250,000.00 in any contract or project. Provided, however, that any new structures or additions to existing structures are less than 3 stories. Nonstructural remodeling and repairs of existing commercial buildings exceeding this height limitation are small commercial construction if the overall cost of the contract or project does not exceed $250,000.00.  BE- (as restricted by Registrar)

RESIDENTIAL CONTRACTING TRADE - B- GENERAL RESIDENTIAL CONTRACTOR

Construction of all or any part of a residential structure or appurtenance, except for electrical, plumbing, air conditioning systems, boilers, swimming pools, spas, and roofing (except shingles and shakes) which must be subcontracted to an appropriately licensed contractor. Also included are the scopes of work in B-3 and most of the C scopes except as restricted above.

B-03 GENERAL REMODELING AND REPAIR CONTRACTOR

Remodeling or repair of an existing residential structure or appurtenance except for electrical, plumbing, mechanical, boilers, swimming pools or spas which must be subcontracted to an appropriately licensed contractor. The scope of work allowed under the C-7 carpentry classification is included within this scope.

B-04 GENERAL RESIDENTIAL ENGINEERING CONTRACTOR

Construction repairs of appurtenances and residential structures. This scope includes all B-4R sub-classifications. Appurtenances means all structures and improvements subordinate to a residence within residential property lines, excluding the residential structure itself, such as driveways, fences, patios, swimming pools, landscaping, sport courts and gazebos. 

B-04R CORROSION CONTROL - SPORT COURT ACCESSORIES - SOIL STABILIZATION

B-05 GENERAL SWIMMING POOL CONTRACTOR

Construction includes repairs of swimming pools and spas. Installation of fencing around swimming pools or spas and installation of utilities from the point of service to the pool equipment. Construction of other structures or appurtenances is excluded. This scope includes all B-5R sub-classifications.

B-05R SWIMMING POOL COVERS - FIBERGLASSING OF SWIMMING POOLS - RESERVOIR LININGS AND COVERS -  FACTORY FABRICATED POOLS AND ACCESSORIES 

B-06 GENERAL SWIMMING POOL CONTRACTOR, INCLUDING SOLAR

The scope of work allowed in this classification is the same as B-5 (including all B-5R sub-classifications) with the inclusion of solar heating devices.

B-10 PRE-MANUFACTURED SPAS AND HOT TUBS

Construction, repairs of spas and hot tubs. Installation of fencing around the spa or hot tub and installation of utilities from the point of service to the spa equipment are included.

SPECIALTY RESIDENTIAL CONTRACTINGJump to Class: A B C K L or select the license type:

C-01 C-02 C-03 C-04 C-04R C-05 C-06 C-07 C-07R C-08 C-08R C-09 C-09R C-10 C-11 C-12 C-13 C-13R C-14 C-14R C-15 C-16 C-16R C-17 C-17R C-18 C-21 C-21R C-22 C-22R C-29 C-30 C-30R C-31 C-31R C-34 C-34R C-36 C-36R C-37 C-37R C-38 C-39 C-39R C-40 C-40R C-41 C-41R C-42 C-42R C-45 C-45R C-48 C-48R C-53 C-61 C-62 C-63 C-65 C-65R C-68

C-01 ACOUSTICAL SYSTEMS

Installations, repair of acoustical wall and ceiling systems, excluding electrical.

C-02 EXCAVATING, GRADING AND OIL SURFACING

Installation, alteration, and repair of earthen material by digging, trenching, grading, or compacting the material for a cut, fill, grade, or trench. Oil surfacing may be applied over base materials.

C-03 AWNINGS AND CANOPIES

Installation and repair of metal, fabric, fiberglass, and plastic window awnings, door hoods, free-standing or attached canopies, carport and patio covers.

Installation or repair of screened and paneled enclosures, not intended for use as habitable spaces, using metal panels, plastic inserts, and screen doors. A minimum of 60% of wall area of an enclosure shall be constructed of screening material.

Installation or repair of fascia panels, flashing, and skirting.

Installation, repairs of exterior detached metal storage units. The placing of concrete footings and concrete slabs are permitted only when intended for patio covers, screened-in porches, and metal storage units when included in the same contract.

Excluded is any structural member which itself weighs more than 6 pounds per lineal foot. All electrical, plumbing, and air conditioning systems are excluded.

C-04 BOILERS, INCLUDING SOLAR

Installation and repairs of steam and hot water boilers. If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.

This scope includes the C-4R sub-classification

C-04R BOILERS

C-05 (as restricted by Registrar)

C-06 SWIMMING POOL SERVICE AND REPAIR

Service and minor repair of residential pools and accessories, excluding plumbing connections to a potable water system, gas lines, gas chlorine systems, and electrical work beyond the 1st disconnect.

C-07 CARPENTRY

Installation and repair of rough and finish general carpentry work on new and existing structures including accessories and related hardware common to the industry. This scope includes all C-7R sub-classifications

C-07R DOORS, GATES, WINDOWS AND ACCESSORIES

REMOVABLE FORMWORK AND SHORING

NAILING AND STAPLING

C-08 FLOOR COVERING

Installation, repairs of floor covering materials and accessories. This scope includes all C-8R sub-classifications

C-08R WOOD FLOORING

CARPET

COMPOSITION FLOORING

NON-CONVENTIONAL FLOOR COVERING

CERAMIC AND CLAY FLOOR COVERING

C-09 CONCRETE

Installation, repairs of concrete, concrete products, and accessories common to the industry. This scope includes all C-9R sub-classifications.

C-09R GUNITE & SHOTCRETE

LIGHTWEIGHT CONCRETE

FENCE FOOTINGS

PRE-CAST CONCRETE

SAWING, CORING, EPOXY PANELS AND BONDING

TERRAZZO

C-10 DRYWALL

Installation, repairs, taping, texturing of gypsum wallboards including lightweight non-bearing wall partitions and ceiling grid support systems for drywall.

C-11 ELECTRICAL

Installation and repairs of electrical systems.

C-12 LOW VOLTAGE COMMUNICATION SYSTEMS

Installation and repair of low voltage alarm, intercom, telephone, call, clock and television systems, including towers and antennas.

C-13 ASPHALT PAVING

Installation and repair of paved areas using materials and methods common to the industry, including asphalt curbs, concrete bumper curbs, headers, and striping. This scope includes the C-13R sub-classification.

C-13R ASPHALT COATING AND PARKING APPURTENANCES

C-14 FENCING

Installation and repair of fencing and low voltage electrical fence protective devices of less than 25 volts, 100 watts, or both. Concrete masonry units cannot exceed 6 feet in height excluding footings, nor can they be used for retaining wall purposes. This scope includes the C-14R sub-classification.

C-14R FENCING OTHER THAN MASONRY

C-15 BLASTING

Use of explosives for movement of earthen materials or for demolitions.

C-16 FIRE PROTECTION SYSTEMS

Installation and repair of approved types of fire prevention and fire protection systems including all mechanical apparatus, devices, piping, low voltage signaling systems, and equipment common to the industry. Installation of all other electrical devices, apparatus, and wiring must be subcontracted to a properly licensed contractor. This scope includes the C-16R sub-classification.

C-16R CO2, DRY AND WET CHEMICAL SYSTEMS

C-17 STRUCTURAL STEEL AND ALUMINUM

Installation and repair of architectural and structural shapes and members common to the industry, including reinforcing steel which may be used as structural members for buildings, equipment, and structuresThis scope includes all C-17R sub-classifications.

C-17R STEEL FLOOR, SUB FLOOR AND FORM SYSTEMS

WELDING

ORNAMENTAL METALS

TANKS

RECREATIONAL EQUIPMENT

REBAR, POST TENSIONING AND WIRE MESH

C-18 ELEVATORS

Installation and repairs of elevator systems.

C-21 LANDSCAPING AND IRRIGATION SYSTEMS

Preparation and alteration of land for horticulture and arboriculture. Installation of irrigation systems and controls. Carpentry is limited to decorative fences and screens, planter boxes, and plant tubs common to the industry. Excluded are retaining walls over 3 feet, decorative walls or fences over 6 feet, perimeter walls, fences, and load bearing slabs and walkways. If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel. This scope includes all C-21R subclassifications.

C-21R LANDSCAPING

IRRIGATION SYSTEMS

C-22 HOUSE MOVING

Disconnection of utilities is permitted, but connection of utilities and construction of foundations are not. This scope includes the C-22R sub-classification.

C-22R WRECKING

C-29 MACHINERY

(as restricted by Registrar)

C-30 FINISH CARPENTRY

Installation, repairs, finishing of cabinets, countertops, case sash, door trim, wood flooring, and other millwork. This scope includes all C-30R sub-classifications.

C-30R KITCHEN AND BATHROOM COMPONENTS

DOORS, WINDOWS, GATES, TUB AND SHOWER ENCLOSURES

CULTURED MARBLE

WEATHERSTRIPPING

C-31 MASONRY

Installation with or without mortar mixture for stone, structural glass, brick, block, baked clay and other products, common to the industry. This scope includes all C-31R sub-classifications.

C-31R FLAGSTONE

STONE MASONRY

C-34 PAINTING AND WALL COVERING

Surface preparations, applications of materials common to the painting, decorating industry for protective and decorative purposes or both. Wall coverings, except ceramic tile, are included. This scope includes all C-34R sub-classifications.

C-34R SURFACE PREPARATION AND WATERPROOFING

WALLPAPER

C-36 PLASTERING

Installation and repair of plaster materials common to the industry. Installation of lath products, including wall partitions and ceiling grids, to provide a key or suction type bond for the various types of plaster coatings. This scope includes all C-36R sub-classifications.

C-36R SWIMMING POOL PLASTERING

LATHING

C-37 PLUMBING, INCLUDING SOLAR

Installation and repairs of water, gas piping systems, fire protection systems, and sewage treatment systems. Included are all fixtures, vents, and devices common to the industry, as well as solar applications. This scope includes all C-37R sub-classifications.

C-37R PLUMBING

BUILT-IN CENTRAL VACUUM SYSTEMS

KITCHEN AND BATHROOM FIXTURE REFINISHING

SWIMMING POOL PLUMBING AND EQUIPMENT

GAS PIPING

SEWERS, DRAINS AND PIPE LAYING

WATER CONDITIONING EQUIPMENT

SOLAR PLUMBING LIQUID SYSTEMS ONLY 

C-38 SIGNS

Installation, repairs of signs, excluding any electrical wiring beyond the 1st adequate power outlet accessible and adjacent to the sign.

C-39 AIR CONDITIONING AND REFRIGERATION, INCLUDING SOLAR

Installation and repair of comfort air conditioning systems, including refrigeration, evaporative cooling, ventilating, and heating with or without solar equipment. Installation, repairs of machinery, units, accessories, refrigerator rooms, insulated refrigerator spaces, and controls in refrigerators. If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel. This scope includes all C-39R sub-classifications.

C-39R AIR CONDITIONING AND REFRIGERATION

GAS REFRIGERATION

TEMPERATURE CONTROL SYSTEMS

WARM AIR HEATING, EVAPORATIVE COOLING AND VENTILATING

EVAPORATIVE COOLING AND VENTILATORS

PRE-COOLERS

C-40 INSULATION

Installation of insulating materials common to the industry for the purpose of temperature or sound control, excluding any exterior roofing materials such as foam and reflective coatingThis scope includes the C-40R sub-classification.

C-40R FOAM INSULATION

C-41 SEWAGE TREATMENT SYSTEMS

Installation and repairs of sewage treatment systems, septic tanks, cesspools, leach fields, in compliance with the requirements of the responsible Health Department. This scope includes the C-41R sub-classification.

C-41R PRECAST WASTE TREATMENT SYSTEMS

C-42 ROOFING

Installation and repair of materials common to the industry that form a water tight, weather resistant surface for roofs and decks, including all accessories, flashing, valleys, gravel stops, and roof insulation panels above the roof deck. This scope includes all C-42R sub-classifications.

C-42R FOAM AND FOAM PANEL ROOFING

LIQUID APPLIED ROOFING

ROOFING SHINGLES AND SHAKES

C-45 SHEET METAL

Installation, repairs of sheet metal, aluminum, plastic, and fiberglass products common to the industry. This scope includes the C-45R sub-classification.

C-45R PREMANUFACTURED FIREPLACES

C-48 CERAMIC, PLASTIC AND METAL TILE

Installation repairs of ceramic and facsimile tile products common to the industry. This scope includes the C-48R sub-classification.

C-48R SWIMMING POOL TILE

C-53 DRILLING

Installation, repairs of wells, including test boring, exploratory drilling and materials and devices common to the industry.

C-61 LIMITED REMODELING AND REPAIR CONTRACTOR

Remodeling or repairs to existing structures or appurtenances, excluding swimming pools or spas, not to exceed $25,000 per project per dwelling. Work on electrical, plumbing, air conditioning systems, or boilers that require a building permit must be subcontracted to an appropriately licensed contractor. The scope of work allowed under the C-7 carpentry classification is included.

C-62 MINOR HOME IMPROVEMENTS

Remodeling, repairs, improvements for existing structures or appurtenances and not to exceed $2,500 for labor, materials per project, per dwelling or appurtenance. The minor home improvement contractor shall not perform structural work to any existing structures or appurtenances, including load bearing masonry or concrete work (with the exception of on-grade flat work), and load bearing carpentry work (with the exception of patio or porch covers). All electrical, plumbing, air conditioning, heating, boiler, and roofing work shall be performed by an appropriately licensed contractor.

C-63 APPLIANCES

Installation and repairs of appliances. Included is the connection of a mobile home to existing gas, plumbing, and electrical services.

C-65 GLAZING

Installation, repairs of glass products, plastics, frames, holding members and all materials common to the industry. This scope includes all C-65R sub-classifications.

C-65R SKYLIGHTS

STORM WINDOWS AND DOORS

MIRRORS

WINDOW TREATMENT

C-68 MOBILE HOME REMODELING AND REPAIR

Repairs or remodeling of mobile homes. Site work is excluded, as well as remodeling which will increase floor area.

GENERAL DUAL ENGINEERING CONTRACTING Jump to Class: A B C K L or select the license type:

 

KA- KA-5 KA-6 KB-1 KB-2 KE- KO- K-01 K-02 K-03 K-04 K-05 K-06 K-07 K-08 K-09 K-10 K-11 K-12 K-13 K-14 K-15 K-16 K-17 K-21 K-24 K-26 K-29 K-31 K-34 K-36 K-37 K-38 K-39 K-40 K-41 K-42 K-44 K-45 K-48 K-53 K-54 K-56 K-57 K-58 K-60 K-61 K-62 K-63 K-64 K-65 K-66 K-67 K-69 K-74 K-77 K-78 K-79 K-80

KA- DUAL ENGINEERING

This classification allows the scope of work permitted by the commercial A- General Engineering and the B-4 General Residential Engineering licenses. 

KA-5 DUAL SWIMMING POOL CONTRACTOR

This classification allows the scope of work permitted by the commercial A-9 Swimming Pools and the residential B-5 General Swimming Pool licenses. 

KA-6 DUAL SWIMMING POOL CONTRACTOR INCLUDING SOLAR

This classification allows the scope of work permitted by the commercial A-19 Swimming Pools, Including Solar and the residential B-6 General Swimming Pools, Including Solar licenses.  KE- (as restricted by Registrar)

GENERAL DUAL LICENSE CONTRACTING

KB-1 DUAL BUILDING CONTRACTOR

This classification allows the scope of work permitted by the B-1 General Commercial Contractor and the B- General Residential Contractor licenses.

KB-2 DUAL RESIDENTIAL AND SMALL COMMERCIAL

This classification allows the scope of work permitted by the B-2 General Small Commercial and the B- General Residential Contractor licenses.

KO- (as restricted by Registrar)

SPECIALTY DUAL LICENSE CONTRACTING

K-1 ACOUSTICAL SYSTEMS

This classification allows the scope of work permitted by the commercial L-1 Acoustical Systems and the residential C-1 Acoustical Systems licenses.

K-2 EXCAVATING, GRADING AND OIL SURFACING

This classification allows the scope of work permitted by the commercial A-5 Excavating, Grading, and Oil Surfacing and the residential C-2 Excavating, Grading, and Oil Surfacing licenses.

K-3 AWNINGS, CANOPIES, CARPORT AND PATIO COVERS

This classification allows the scope of work permitted by the commercial L-3 Awnings, Canopies and Carports and Patio Covers and the residential C-3 Awnings and Canopies licenses.

K-4 BOILERS, STEAMFITTING AND PROCESS PIPING

This classification allows the scope of work permitted by the commercial L-4 Boilers, Steamfitting and Process Piping and the residential C-4R Boilers licenses.  K-5 (as restricted by the Registrar)

K-6 SWIMMING POOL SERVICE AND REPAIR

This classification allows the scope of work permitted by the commercial L-6 Swimming Pool Service and Repair and the residential C-6 Swimming Pool Service and Repair licenses.

K-7 CARPENTRY

This classification allows the scope of work permitted by the commercial L-7 Carpentry and the residential C-7 Carpentry licenses.

K-8 FLOOR COVERING

This classification allows the scope of work permitted by the commercial L-8 Floor Covering and the residential C-8 Floor Covering licenses.

K-9 CONCRETE

This classification allows the scope of work permitted by the commercial L-9 Concrete and the residential C-9 Concrete licenses.

K-10 DRYWALL

This classification allows the scope of work permitted by the commercial L-10 Drywall and the residential C-10 Drywall licenses.

K-11 ELECTRICAL

This classification allows the scope of work permitted by the commercial L-11 Electrical and residential C-11 Electrical licenses.

K-12 ELEVATORS

This classification allows the scope of work permitted by the commercial L-12 Elevators and the residential C-18 Elevators licenses.

K-13 CARPET

This classification allows the scope of work permitted by the commercial L-13 Carpets and the residential C-8R Carpet licenses.

K-14 FENCING

This classification allows the scope of work permitted by the commercial L-14 Fencing and the residential C-14 Fencing licenses.

K-15 BLASTING

This classification allows the scope of work permitted by the commercial A-3 Blasting and the residential C-15 Blasting licenses.

K-16 FIRE PROTECTION SYSTEMS

This classification allows the scope of work permitted by the commercial L-16 Fire Protection Systems and the residential C-16 Fire Protection licenses.

K-17 STEEL AND ALUMINUM ERECTION

This classification allows the scope of work permitted by the commercial A-11 Steel and Aluminum Erection and the residential C-17 Structural Steel and Aluminum licenses.

K-21 LANDSCAPING AND IRRIGATION SYSTEMS

This classification allows the scope of work permitted by the commercial A-21 Landscaping and Irrigation Systems and the residential C-21 Landscaping and Irrigation Systems licenses.

K-24 ORNAMENTAL METALS

This classification allows the scope of work permitted by the commercial L-24 Ornamental Metals and the residential C-17R Ornamental Metals licenses.

K-26 LANDSCAPING

This classification allows the scope of work permitted by the commercial L-26 Landscaping and the residential C-21R Landscaping licenses.

K-29 MACHINERY (as restricted by Registrar)

K-31 MASONRY

This classification allows the scope of work permitted by the commercial L-31 Masonry and the residential C-31 Masonry licenses.

K-34 PAINTING

This classification allows the scope of work permitted by the commercial L-34 Painting and Wallcovering and the residential C-34 Painting and Wallcovering licenses.

K-36 PLASTERING

This classification allows the scope of work permitted by the commercial L-36 Plastering and the residential C-36 Plastering licenses.

K-37 PLUMBING

This classification allows the scope of work permitted by the commercial L-37 Plumbing and the residential C-37R Plumbing licenses.

K-38 SIGNS

This classification allows the scope of work permitted by the commercial L-38 Signs and the residential C-38 Signs licenses.

K-39 AIR CONDITIONING AND REFRIGERATION

This classification allows the scope of work permitted by the commercial L-39 Air Conditioning and Refrigeration and the residential C-39R Air Conditioning and Refrigeration licenses.

K-40 INSULATION

This classification allows the scope of work permitted by the commercial L-40 Insulation and the residential C-40 Insulation licenses.

K-41 SEPTIC TANKS AND SYSTEMS

This classification allows the scope of work permitted by the commercial L-41 Septic Tanks and Systems and the residential C-41 Sewage Treatment and Systems licenses.

K-42 ROOFING

This classification allows the scope of work permitted by the commercial L-42 Roofing and the residential C-42 Roofing licenses.

K-44 IRRIGATION SYSTEMS

This classification allows the scope of work permitted by the commercial L-44 Irrigation Systems and the residential C-21R Irrigation Systems licenses.

K-45 SHEET METAL

This classification allows the scope of work permitted by the commercial L-45 Sheet Metal and the residential C-45 Sheet Metal licenses.

K-48 CERAMIC, PLASTIC AND METAL TILE

This classification allows the scope of work permitted by the commercial L-48 Ceramic, Plastic and Metal Tile and the residential C-48 Ceramic, Plastic and Metal Tile licenses.

K-53 WATER WELL DRILLING

This classification allows the scope of work permitted by the commercial L-53 Water Well Drilling and the residential C-53 Drilling licenses.

K-54 WATER CONDITIONING EQUIPMENT

This classification allows the scope of work permitted by the commercial L-54 Water Conditioning Equipment and the residential C-37R Water Conditioning Equipment licenses.

K-56 WELDING

This classification allows the scope of work permitted by the commercial L-56 Welding and the residential C-17R Welding licenses.

K-57 WRECKING

This classification allows the scope of work permitted by the commercial L-57 Wrecking and the residential C-22R Wrecking licenses.

K-58 COMFORT HEATING, VENTILATING, EVAPORATIVE COOLING

This classification allows the scope of work permitted by the commercial L-58 Comfort Heating, Ventilating, Evaporative Cooling and the residential C-39R Warm Air Heating, Evaporative Cooling, and Ventilating licenses.

K-60 FINISH CARPENTRY

This classification allows the scope of work permitted by the commercial L-60 Finish Carpentry and the residential C-30 Finish Carpentry licenses.

K-61 CARPENTRY, REMODELING AND REPAIRS

This classification allows the scope of work permitted by the commercial L-61 Carpentry, Remodeling and Repairs and the residential C-61 Limited Remodeling and Repair Contractor licenses.

K-62 REINFORCING BAR AND WIRE MESH

This classification allows the scope of work permitted by the commercial L-62 Steel Reinforcing Bar and Wire Mesh and the residential C-17R Rebar and Wire Mesh licenses.

K-63 APPLIANCES

This classification allows the scope of work permitted by the commercial L-63 Appliances and the residential C-63 Appliances licenses.

K-64 WOOD FLOOR LAYING AND FINISHING

This classification allows the scope of work permitted by the commercial L-64 Wood Floor Laying and Finishing and the residential C-8R Wood Flooring licenses.

K-65 GLAZING

This classification allows the scope of work permitted by the commercial L-65 Glazing and the residential C-65 Glazing licenses.

K-66 SEAL COATING

This classification allows the scope of work permitted by the commercial A-15 Seal Coating and the residential C-13R Asphalt Coating and Parking Appurtenances licenses.

K-67 LOW VOLTAGE COMMUNICATION SYSTEMS

This classification allows the scope of work permitted by the commercial L-67 Low Voltage Communications Systems and the residential C-12 Low Voltage Communication Systems licenses.

K-69 ASPHALT PAVING

This classification allows the scope of work permitted by the commercial A-14 Asphalt Paving and the residential C-13 Asphalt Paving licenses.

K-74 BOILERS, STEAMFITTING AND PROCESSPIPING, INCLUDING SOLAR

This classification allows the scope of work permitted by the commercial L-74 Boilers, Steamfitting and Process Piping, Including Solar and the residential C-4 Boilers Including Solar licenses.

K-77 PLUMBING INCLUDING SOLAR

This classification allows the scope of work permitted by the commercial L-77 Plumbing Including Solar and the residential C-37 Plumbing Including Solar licenses.

K-78 SOLAR PLUMBING LIQUID SYSTEMS ONLY

This classification allows the scope of work permitted by the commercial L-78 Solar Plumbing Liquid Systems Only and the residential C-37R Solar Plumbing Liquid Systems Only licenses.

K-79 AIR CONDITIONING AND REFRIGERATION INCLUDING SOLAR

This classification allows the scope of work permitted by the commercial L-79 Air Conditioning and Refrigeration Including Solar and the residential C-39 Air Conditioning and Refrigeration Including Solar licenses.

K-80 SEWERS, DRAINS AND PIPE LAYING

This classification allows the scope of work permitted by the commercial A-12 Sewers, Drains, and Pipe Laying and the residential C-37R Sewers, Drains and Pipe Laying licenses.

SPECIALTY COMMERCIAL CONTRACTING Jump to Class: A B C K L or select the license type:

L-01 L-03 L-04 L-05 L-06 L-07 L-08 L-09 L-10 L-11 L-12 L-13 L-14 L-16 L-24 L-26 L-27 L-29 L-31 L-34 L-36 L-37 L-38 L-39 L-40 L-41 L-42 L-44 L-45 L-48 L-49 L-53 L-54 L-56 L-57 L-60 L-61 L-62 L-63 L-64 L-65 L-67 L-74 L-77 L-78 L-79

L-01 ACOUSTICAL SYSTEMS

Installations, applications, alterations, repairs of all types of pre-manufactured acoustical ceilings and wall systems.

L-03 AWNINGS, CANOPIES, CARPORT AND PATIO COVERS

Installation and repair of window awnings, door hoods, free-standing or attached canopies, carport and patio covers constructed of metal, fabric, fiberglass, and plastic.

Installation or repair of screened and paneled enclosures, not intended for use as habitable spaces, using metal panels, plastic inserts and screen doors. A minimum of 60% of wall area of an enclosure shall be constructed of screening material.

Installation or repairs of fascia panels, flashing and skirting.

Installation or repairs of exterior detached metal storage units. The placing of concrete footings and concrete slabs is permitted only when intended for patio covers, screened-in porches, and metal storage units when included in the same contract.

Excluded is any structural member that weighs more than 6 pounds per lineal foot.

All electrical, plumbing, and air conditioning systems are excluded.

L-04 BOILERS, STEAMFITTING AND PROCESS PIPING

Installation, alteration, and repair of steam and hot water systems and boilers, including chimney connections, flues, refractories, burners, piping, fittings, valves, thermal insulation, and accessories; fuel and water lines from source of supply to boilers; process and specialty piping and related equipment; pneumatic and electrical controls.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.  L-05 (as restricted by Registrar)

L-06 SWIMMING POOL SERVICE AND REPAIR

Service, replacements, repairs of swimming pools including all existing connections and equipment. Pool gas heaters and gas piping from meter to heater may be installed only if the existing line and gas supply are adequate.

Applications of pool coatings to interior of pools in conjunction with minor repairs to pool tiles, plaster, and decks.

Excluded are chlorine gas connections, connections to potable water, and electric connections beyond first readily accessible disconnect.

L-07 CARPENTRY

Carpentry includes all rough and finish general carpentry work and hardware, including accessories, on new and existing structures.

L-08 FLOOR COVERING

Installations, replacements, repairs of floor covering materials, related accessories including preparation of the surface to be covered.

Included are linoleum, carpets, carpet backings and pads, and materials manufactured of asphalt, vinyl, vinyl asbestos, rubber, wood, ceramic, and clay.

L-09 CONCRETE

All work in connection with the processing, proportioning, batching, mixing, conveying, and placing of concrete composed of materials common to the concrete industry, including finishing, coloring, curing, repairing, testing, drilling, sawing, grinding, chipping, and grouting. Placing film barriers, sealing, and waterproofing are included.

Construction, centering, and assembling forms, molds, slipforms, and pans.

Trenching, excavating, backfilling, grading in connection with concrete construction.

Installations of embedded items essential to or comprising an integral part of the concrete, concrete construction, reinforcing elements and accessories.

L-10 DRYWALL

Installation, pointing, and repair of gypsum wall board, and accessories. Taping and texturing on structures both interior and exterior.

Installation of non-bearing lightweight steel wall partitions and ceiling grid systems as supporting members for gypsum drywall, and installation and repair of movable partitions for the application of gypsum drywall panels.

L-11 ELECTRICAL

Installation, alteration, and repair of any wiring, related electrical material and equipment used in the generating, transmitting, or utilization of electrical energy less than 600 volts, including all overhead electrical wiring on public right-of-ways for signs and street decorations, and all underground electrical distribution systems of less than 600 volts serving private properties.

Installation, alteration, and repair on other than public right-of-ways of all outside, overhead, and underground electrical construction and all wiring in or on any building of less than 600 volts.

L-12 ELEVATORS

Installation, service and repair of all elevators, dumbwaiters, escalators, moving walks and ramps, stage and orchestra lifts, including the fabrication, erection and installation of sheave beams, sheaves, motors, cable and wire rope, guides, cabs, counterweights, doors, including sidewalk elevator doors, automatic and manual controls, signal systems and other devices, apparatus, and related equipment.

L-13 CARPETS

Installations, replacements, repair of carpeting materials, accessories, including preparations of the surfaces to be covered.

L-14 FENCING

Installation and repair of metal, wood, and cement block fencing, including highway guard rails, cattle guards, and low voltage U.L. approved electrical fence protective devices of less than 25 volts and 100 watts, when required to properly install fencing.  All types of retaining walls are excluded.

L-16 FIRE PROTECTION SYSTEMS

Installation, alteration, and repair of fire protection systems using water, steam, gas, or chemicals. Included is any required excavation, trenching, backfilling and grading, piping from structure, and connections to off-premise water supply adjacent to property involving a fire protection system.

Systems may include the following areas of work and related equipment: restaurant hood protection systems; fire pumps and drivers; pressure and storage tanks; all piping and valves; sprinkler heads and nozzles; and application of materials for the prevention of corrosion or freezing.

Also included are air compressors, air receivers, bottled inert gases, pressurized chemicals, manifolds, pneumatic, hydraulic, or electrical controls, low voltage signaling systems, control piping, and the flushing and testing of systems.

L-24 ORNAMENTAL METALS

Fabrications, alterations, repairs,  installation of all types of non-structural bearing ornamental metal units, both interior and exterior, including metal folding gates, guard and hand rails, wrought iron fencing and gates, window shutters and grilles, room dividers and shields, and metal accessories common to the industry. Installation of ornamental or common columns for canopies, porches, and carports are also included. Fire escapes and stairs are excluded.

L-26 LANDSCAPING

Treat, condition, prepare, and install topsoil. Plant all decorative vegetation. Excavate, trench, backfill, and grade as necessary for installation of landscaping.

Installation of wood decks, non-loadbearing slabs, walkways, and areas using concrete, brick, stone, or gravel; and all other materials and equipment common to the industry.

Excluded are concrete slabs exceeding 400 square feet, concrete walkways exceeding 200 square feet, and masonry work over 18 inches in height.

Installation of electric wiring and related fixtures of 110 volts or less for landscaping projects is included. All electrical work is limited to exterior use, and only that work necessary to complete landscaping projects.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.

L-27 LIGHTWEIGHT PARTITIONS

Installation of lightweight (not to exceed 14 gauge) metal wall partitions, including suspended metal ceiling grid systems, as supporting members for the application of building materials such as: application and repair of gypsum plaster, cement, acoustical plaster, or a combination of materials and aggregates, that create a permanent coating; the application of such materials over any surface which offers either a mechanical or suction type bond, sprayed, dashed, or troweled to the surface; surface sandblasting preparatory to plastering or stucco; installation of plastering accessories and lath products manufactured to provide a key or suction type bond for the support of various type plaster coatings; and installation and repair of gypsum wall board, pointing, accessories, taping, and texturing on structures both interior and exterior. L-29 MACHINERY (as restricted by Registrar)

L-31 MASONRY

Installation of bricks, concrete blocks, adobe units, stone, marble, slate, or other units, products common to the masonry industry, includes mortarless type masonry products.

Installation of grout, caulking, tuck pointing, sand blasting, mortar washing, parging, cleaning, and welding of reinforcing steel related to masonry construction.

L-34 PAINTING AND WALL COVERING

Application of materials common to the painting and decorating industry for protective and decorative purposes. Includes surface preparations, caulking, sanding and cleaning preparatory to painting.

Installation of surface coverings such as vinyls, wall papers, and cloth fabrics; decorative texturing; taping and finishing of drywall in conjunction with surface painting only.

L-36 PLASTERING

Application and repairs of gypsum plaster, cement, acoustical plaster, or a combination of such materials and aggregates that create a permanent surface coating.

Application of materials common to the plastering industry over any surface which offers either a mechanical or suction type bond, sprayed, dashed, or troweled to a surface. This scope includes surface sandblasting preparatory to plastering or stucco.

Installation of accessories and lath products manufactured to provide a key or suction type bond for the support of various type plaster coatings. Installation of lightweight metal wall partitions, including suspended lightweight metal ceiling grid systems when the contract includes plastering.

L-37 PLUMBING

Installation, alteration, and repair of all plumbing when performed solely within property lines and not on public easements or right-of-ways, except as hereinafter provided.

Installation, alteration, and repair of all piping, fixtures, and appliances related to water supply, including pressure vessels and tanks (excluding municipal or related water supply systems); venting and sanitary drainage systems for all fluid, semi-fluid, and organic wastes; septic tanks and leaching lines; roof leaders; lawn sprinklers; water conditioning equipment; piping; and equipment for swimming pools.

Also included are piping, fixtures, appliances, and pressure vessels for manufactured and natural gases, compressed air and vacuum systems, petroleum, fuel oil, non-potable liquids, hot water heating, and hot water supply systems operating at pressures not exceeding 30 PSIG, or temperatures not exceeding 220° F; steam heating and steam supply systems not exceeding 15 PSIG operating pressure; gas or oil fired space heaters and furnaces, excluding duct work. Piping for water cooling systems, excluding the refrigerant piping and equipment. Testing and balancing of hydronics systems.

Sewer, gas, water lines, and connections from structure to the nearest point of public supply or disposal may cross public or private easements or be installed within private easements. Pipe installed across public property may not be increased in size, or make any other connection between the point of exit from private property to the point of connection at public supply or disposal. These lines shall not be installed parallel to main lines in public easements or right-of-ways.

L-38 SIGNS

Fabricate, install, repair, and service indoor or outdoor signs, displays, and sign devices attached to, or painted on a structure for the purpose of display, advertising or direction, including painting for background and decorative purposes; sign supports and accessories; flagpoles; electrical wiring directly connecting signs, displays, and sign devices to the first adequate power outlet accessible and adjacent to the sign, display, or sign device.

L-39 AIR CONDITIONING AND REFRIGERATION

Installations, alterations, repairs of refrigeration and evaporative cooling systems.

Installations, alterations, repairs of heating systems of "wet", "dry" or radiant type. "Wet" systems include steam or hot water boilers and coils, or baseboard convectors, and are limited to 30 PSIG operating pressure of 220° F for hot water and 15 PSIG operating pressure for steam. Dry systems include gas fired furnaces and space heaters.

Installation, alteration, and repair of ventilation systems includes duct work, air filtering devices, water treatment devices, pneumatic or electrical controls, and control piping. Thermal and acoustical insulation, vibration isolation materials and devices, liquid fuel piping and tanks, water and gas piping from service connection to the equipment it serves. Testing and balancing of refrigerant, cooling, heating circuits, and air handling systems.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.

L-40 INSULATION

Installation, alteration, and repair of insulation materials for the non-mechanical control of heat, sound, and moisture for use in the construction of structures and equipment.

Includes installation methods and devices such as supports, fastening systems, adhesives, mastics, plastics, and material used for the preparation of insulation work and common to the industry.

Application and installation of materials to protect or finish insulated surfaces.

L-41 SEPTIC TANKS & SYSTEMS

Installation, alteration, and repair of septic tanks, aerobic digesters and leaching fields, excavation for tanks, leaching systems and piping, pipe laying for septic systems, and connection to the structure the system serves. Also included is backfilling and compaction in connection with this work.

L-42 ROOFING

Installation and repair of materials common to the industry that form a watertight, weather resistant surface for roofs and decks. Included is sheet metal when installed in conjunction with a roofing project, application of protective and reflective roof and deck coatings, application of damp-proofing or waterproofing, and installation of roof insulation panels and other roof insulation systems above roof deck.

L-44 IRRIGATION SYSTEMS

Excavate, trench, bore, backfill, and grade as necessary for installation of irrigation systems.

Installations, repairs, maintenance of irrigation systems to distribute water for the purpose of irrigation, dust, soil erosion control. Using equipment, materials, fittings common to the industry. This includes electrical control panels and apparatus, which are an integral part of the irrigation system.

Installation of backflow prevention devices, hose bibs, service lines and connections to potable water lines from source of supply are permitted only when they are an integral part of the irrigation system.

Installation of electric wiring and related fixtures of 110 volts or less for irrigation projects is included. All electrical work is limited to exterior use and only that work necessary to complete an irrigation project.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.

L-45 SHEET METAL

Fabrication, installation, and repair of architectural and general products made of sheet metal common to the trade.

Includes layout, cutting, fabrication, installation of sheet metal product; assembly and installation of pre-manufactured sheet metal products; facsimile items such as plastic skylights and fiberglass ducts and fittings; and bracing and reinforcing materials.

L-48 CERAMIC, PLASTIC AND METAL TILE

Installation and repair of non-structural bearing clay, glass, mosaics, metal, plastic, marble, terrazzo, slate, and other cement types of tile common to the industry installed for sanitary and decorative purposes; and setting of accessories and decorative inserts of various materials applied to surfaces by conventional methods.

Placing setting beds, laying, cuttings, setting, grouting tile used for all interior and exterior structure surfaces.

Includes caulking, installing various types of expansion joints, divider strips, within abutting tile work. Installation of shower doors and tub enclosures are included when a part of the original contract.

L-49 COMMERCIAL, INDUSTRIAL REFRIGERATION

Installation, alterations, repairs of refrigeration equipment, systems used for processing storage to display food products and other perishable commodities.

Includes commercial, industrial, manufacturing processes requiring refrigeration, excluding comfort air conditioning.

Systems may also include the following areas of work and related equipment: temperature, safety and capacity controls, thermal insulation, vibration isolation materials and devices; water treatment devices; construction and installation of walk-in refrigeration boxes, liquid fuel piping and tanks, water and gas piping from equipment to service connection; and testing and balancing of refrigeration equipment and systems.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.

L-53 WATER WELL DRILLING

Drill new water wells or deepen existing water wells by use of standard practices including the use of cable tools, compressed air percussion, rotary, air rotary, or reverse circulation rotary methods. Includes installing casing, gravel pack, perforating and sanitary seals. Repair existing wells by sand pumping, jetting, acidizing, swabbing, clean out, re-perforating, swaging, installation of annealed lines, and the removal of debris.

Includes photographing interior of wells with appropriate equipment. Installation of jet and submersible pumps; electrical pump controls and wiring from pump equipment to first readily accessible disconnect; and water line to storage or pressure tank, not to exceed 50 linear feet. Use of a test pump to develop a new well, or repair an existing well, when provided in contract, is limited to 5 horsepower.

Installation of concrete pump bases not to exceed 50 square feet.

Installation of protective fencing when included in original contract.

L-54 WATER CONDITIONING EQUIPMENT

Installation, repair, maintenance of water conditioning equipment, piping, fittings, and valves necessary to connect a water conditioner unit to existing piping.

Installation and repair of indirect waste pipe carrying brine, backwash, and rinse water to the point of disposal only.

All trenching, backfilling, grading necessary for the installation of piping, only for water conditioning unit.

Installation and repair of electrical control panels (plug-in type) and apparatus of less than 25 volts or 100 watts or both (in other than hazardous locations or in raceways) and required grounding devices.

Installation of exchange tanks for necessary piping.

Installation of concrete supports for water conditioning units only.

L-56 WELDING

The performance of welding techniques by the use of processes common to the industry, including general on site job layout, cutting, and assembly.

L-57 WRECKING

Demolition, dismantling, and removal of structures not intended for reuse, the erection of temporary ramps, barricades, and pedestrian walkways when required for a wrecking project. The use of explosives is excluded.

L-58 COMFORT HEATING, VENTILATING, EVAPORATIVE COOLING

Installation, alteration, and repair of warm air heating systems, gas fired furnaces and space heaters, ventilation and evaporative cooling units, or any combination of these.

Systems may include the following areas of work and related equipment; duct work, air filtering devices, pneumatic or electrical controls, control piping, thermal and acoustical insulation, vibration isolation materials and devices, liquid fuel piping and tanks, water and gas piping from service connection to equipment it serves. Testing and balancing of air handling systems.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.

L-60 FINISH CARPENTRY

Installation, alteration, repair and finishing of all millwork including cabinets, counter tops, case sash, door trim, wood flooring, and other materials common to the industry.

L-61 CARPENTRY, REMODELING AND REPAIRS

All rough and finish general carpentry work on new and existing structures, including installation of related hardware and accessories, without dollar limitation.

All general remodeling, additions, replacements, and repairs to existing structures, and pre-manufactured items on existing structures, except electrical, plumbing, and air conditioning system work which shall be sublet to properly licensed contractors.

A single contract for remodeling, repair, or a combination of both, shall not exceed $50,000.

L-62 REINFORCING BAR AND WIRE MESH

Installation of reinforcing bars, wire mesh in preparation for placement of concrete materials, including post tensioning.

L-63 APPLIANCES

Installation and repair of appliances that become a fixed part of a structure, after necessary gas, electrical, or plumbing lines have been provided by properly licensed contractors.

Installation of gas lines from meter to unit only where required due to improper existing pipe size.

Connection of mobile structures to the existing gas, plumbing, electrical service facilities and inspections and servicing of gas fired furnaces.

L-64 WOOD FLOOR LAYING AND FINISHING

Installation, replacements and repair of wood floors using materials and methods common to the industry including preparation of subflooring.

Finishing and refinishing wood flooring by sanding and applying special surface treatment.

L-65 GLAZING

Assembly, installation and replacement of glass products.

Installation of steel and aluminum glass holding members, glass products, and related hardware.

Installation of standard methods of weatherproofing, caulking, glazing, sealants, and adhesives.

L-67 LOW VOLTAGE COMMUNICATION SYSTEMS

Installation, service, repair, and maintenance of systems and devices of low voltage, including public address; intercommunication systems; telephone switchboards; call systems; master and program clocks (low voltage wiring and needed equipment only); electrical teaching devices; low voltage signaling; master television antennas; closed circuit television, and alarm systems.

Installation, service, repair, and maintenance of both high and low level electronic or electrical control devices that is associated with systems of low voltage.  Erection of towers on buildings for television antennas.

L-74 BOILERS, STEAMFITTING AND PROCESS PIPING, INCLUDING SOLAR

Installation, alteration, repairs of steam and hot water systems and boilers including solar. Also included are chimney connections, flues, refractories, burners, piping, fittings, valves, thermal insulation and accessories; fuel and water lines from source of supply to boilers; process and specialty piping and related equipment; pneumatic and electrical controls.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.

L-77 PLUMBING INCLUDING SOLAR

Installation, alteration, and repair of all plumbing including solar, when performed solely within property lines and not on public easements or right-of-ways except as hereinafter provided.

Installation, alteration, and repair of all piping, fixtures and appliances related to water supply, including pressure vessels and tanks (excluding municipal or related water supply systems); venting and sanitary drainage systems for all fluid, semi-fluid, and organic wastes; septic tanks and leaching lines; roof leaders; lawn sprinkler systems; water conditioning equipment; piping and equipment for swimming pools.

Also included are piping, fixtures, appliances, and pressure vessels for manufactured and natural gases, compressed air and vacuum systems, petroleum, fuel oil, non-potable liquids, hot water heating and hot water supply systems operating at pressures not exceeding 30 PSIG or temperatures not exceeding 220° F; steam heating and steam supply systems not exceeding 15 PSIG operating pressure; gas or oil fired space heaters and furnaces excluding duct work. Piping for water cooling systems, excluding the refrigerant piping and equipment. Testing and balancing of hydronics systems.

Sewer, gas, water lines, and connections from structure to the nearest point of public supply or disposal may cross public or private easements or be installed within private easements. Pipe installed across public property may not be increased in size or make any other connection between the point of exit from private property to point of connection at public supply or disposal. These lines shall not be installed parallel to main lines in public easements or right-of-ways.

L-78 SOLAR PLUMBING LIQUID SYSTEMS ONLY

Installation, alteration, and repair of solar water heating systems operating at temperatures not exceeding 220° F, including thermosyphon, direct (open loop), and indirect (closed loop),but excludes air as a transfer medium.

Includes installation of collectors, storage, expansion tanks, heat exchangers, piping valves, pumps, sensors and low voltage controls that connect to existing plumbing and electrical stub-outs at the water tank location.

Installation of solar water heating systems for swimming pools that tie into and operate from the conventional pool systems, but excludes all non-solar plumbing, electrical and mechanical systems and components.

Installation of back-up auxiliary heating systems, only when such systems are included in the original contract when such systems are an integral part of the solar collector or storage equipment.

L-79 AIR CONDITIONING AND REFRIGERATION INCLUDING SOLAR

Installation, alterations, and repair of refrigeration and evaporative cooling systems, including solar.

Installation, alteration, and repair of heating systems of "wet", "dry" or radiant type. "Wet" systems include steam, or hot water boilers and coils, or baseboard convectors and are limited to 30 PSIG operating pressure of 220° F for hot water and 15 PSIG operating pressure for steam. Dry systems include gas fired furnaces and space heaters.

Installation, alterations, and repair of ventilation systems.

Installations of these systems include duct work, air filtering devices, water treatment devices, pneumatic or electrical controls, and control piping. Thermal and acoustical insulation, vibration isolation materials and devices, liquid fuel piping and tanks, and water and gas piping from service connection to equipment it serves. Testing and balancing of refrigerant, cooling and heating circuits, and air handling systems.

If necessary, a new circuit may be added to the existing service panel or sub-panel. Excluded is the installation of a new service panel or sub-panel.  Jump to Class: A B C K L

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