Arizona Contractor License Classifications

To obtain a contractor license in Arizona, you should apply to the Arizona Registrar of Contractors. The registrar issues separate licenses for commercial and residential work. But, there is also a dual license that covers both commercial and residential fields of the construction profession.

With your residential contractor license, you can work on residential structures such as houses, townhouses, condominiums, or cooperative units and apartment complexes of four units or less.

So, commercial contracting is anything other than residential. Moreover, besides these two big classifications, some sub-classifications are listed below.

The description and scope of work are defined by the Arizona Registrar of Contractors.

A-General engineering

In short, this classification allows the licensee to construct or repair:

Fixed works, streets, roads, power, and utility plants, dams, hydroelectric plants, sewage, and waste disposal plants, bridges, tunnels, overpasses, public parks, public right-of-ways

A-4 – Drilling

In short, this classification allows the licensee to drill, including horizontal and vertical drilling or boring, constructing, deepening, repairing, or abandoning wells.

A-5 – Excavating, grading, and oil surfacing

In short, this classification allows the licensee to apply oil surfacing or other similar products. With this license to fulfill the job you can:
Digging, trenching, grading, horizontal boring, compacting, and filling.

A-7 – Piers and foundations

To clarify, this classification allows the licensee to install piers and foundations using concrete, rebar, and other materials common to the industry.

A-9 – Swimming pools

To clarify, this classification allows the licensee to construct, repair and install swimming pools, swimming pool accessories, and spas.

A-11 – Steel and aluminum erection

To sum up, this classification allows the licensee to install and repair architectural and structural steel and aluminum materials.

A-12 – Sewers, drains, and pipe laying

To clarify, this classification allows the licensee to install and repair any project involving sewer access holes, the laying of pipe for storm drains, water and gas lines, irrigation, and sewers.

A-14 – Asphalt paving

To clarify, this classification allows the licensee to install asphalt paving, and all related fine grading on streets, highways, and other similar areas. Also includes the scope of work allowed by the A-15 classification.

A-15 – Seal coating

In short, this classification allows the licensee to apply seal coating to asphalt paving surfaces and repair the surface cracks.

A-16 – Waterworks

In short, this classification allows to perform all necessary work for the production and distribution of water including drilling well, setting casing and pumps, etc.

A -17 – Electrical and transmission lines

To clarify, this classification allows to install, alter, and repair of transmission lines on public right-of-ways.

A-19 – Swimming pools including solar

In short, this classification allows the licensee to perform the same scope of work permitted by the A-9 but also includes installation and repair of solar heating devices.

General commercial contracting

B-1 – General commercial contractor

In short, this classification allows to construct, alter, and repair in connection with any structure built, being built, or to be built.

B-2 – General small commercial contractor

To clarify, for projects of $2,000,000 or less including labor and materials, this classification allows to perform commercial construction in connection with any new structure or addition built, being built, or to be built.

Residential contracting

B-General residential contractor

To clarify, this classification allows the licensee to construct and repair all or any part of a residential structure or appurtenance.

B-3 – General remodeling and repair contractor

To clarify, this classification allows to remodel and repair an existing residential structure or appurtenance except for electrical, plumbing, mechanical, boilers, swimming pools, spas, and water wells.

B-4 – General residential engineering contractor

To clarify, this classification allows to construct and repair of appurtenances to residential structures.

B-5 – General swimming pool contractor

In short, this classification allows to construct and repair of swimming pools and spas.

B-5R Swimming Pool Covers

B-6 – General swimming pool contractor, including solar

In short, this classification allows the licensee to perform the same scope of work permitted by the B-5 but also includes installation and repair of solar heating devices.

B-10 – Pre-manufactures spas and hot tubs

In short, this classification allows to construct and repair of spas and hot tubs.

Specialty residential contracting

R-1A – Acoustical systems

In short, this classification allows the licensee to install and repair pre-manufactured acoustical ceiling and wall systems.

R-2 – Excavating, grading, and oil surfacing

In short, this classification allows to apply oil surfacing or other similar products and place shoring, casing, geotextiles, or liners to move, alter or repair earthen materials by digging, trenching, grading, horizontal boring, compacting, filling.

R-3 – Awnings, canopies, carports, and patio covers

To clarify, this classification allows to place concrete footings and concrete slabs to install and repair window awnings, door hoods, freestanding or attached canopies, carport, and patio covers constructed of metal, fabric, fiberglass, or plastic, screened and paneled enclosures, which are not intended for use as habitable spaces, using metal panels, plastic inserts, and screen doors. A minimum of 60% of the wall area of an enclosure shall be constructed of screening material. Fascia panels, flashing and skirting, exterior, detached metal storage units, not to exceed 200 square feet.

R-4 – Boilers, including solar

To clarify, this classification allows to install, alter, and repair of steam and hot water systems and boilers.

R-6 – Swimming pool service and repair

To clarify, this classification allows to service and performs minor repair of residential pools and accessories.

R-7- Carpentry

In short, this classification allows to install and repair rough carpentry, finish carpentry, hardware, millwork, metal studs, metal doors or door frames, and windows.

R-8 – Floor covering

In short, this classification allows to prepare a surface to install and repair the following floor covering materials carpet, floor tile, wood, linoleum, vinyl, asphalt, rubber, concrete coatings.

R-9 – Concrete

In short, this classification allows to install and repair of concrete, concrete products, and accessories.

R-10 – Drywall

In short, this classification allows to install and repair gypsum wallboard, ceiling grid systems as supporting members for the gypsum drywall, movable partitions, wallboard tape, and texture, non-load bearing, lightweight, steel wall partitions.

R-11 – Electrical

In short, this classification allows to install and repair residential electrical systems.

R-12 – Elevators

In short, this classification allows to install and repair elevators, dumbwaiters, escalators, moving walks and ramps, stage and orchestra lifts.

R-13 – Asphalt paving

Moreover, this classification allows to install and repair of paved areas using materials and methods common to the industry.

R-14 – Fencing

In short, this classification allows to install and repair metal, wood, and cement block fencing, automatic gates, fire access strobes, cattle guards, low voltage U.L. approved electrical fence protective devices of less than 25 volts and 100 watts.

R-15- Blasting

To clarify, this classification allows to drill, bore, move earth, and build temporary shelters or barricades by using explosive devices for excavation, demolition, construction-related blasting.

R-16- Fire protection systems

To clarify, this classification allows to install and repair fire prevention and fire protection systems including all required mechanical apparatus.

R-17- Structural steel and aluminum

To clarify, this classification allows to install and repair architectural and structural steel and aluminum materials.

R-21 – Hardscaping and irrigation systems

In short, this classification allows the licensee to install, alter, and repair non-loadbearing concrete; uncovered patios, walkways, driveways made of brick, stone, pavers, or gravel; wooden decks no higher than 29 inches above finish grade; decorative garden walls up to six feet from finish grade; fences and screens up to six feet from finish grade; retaining walls up to three feet from the finish grade of the lower elevation; freestanding fire pits, fireplaces, or barbeques; low voltage landscape lighting; water features that are not attached to swimming pools; irrigation systems; residential outdoor misting systems; freestanding and uncovered outdoor kitchens

R-22 – House moving

In short, this classification allows to disconnect utilities, but the connection is not permitted.

R-24 – Ornamental metals

In short, this classification allows to install, alter, or repair non-structural ornamental metal, such as metal folding gates; guards, and handrails; wrought iron fencing, and gates; window shutters and grilles; room dividers and shields; metal accessories common to the industry.

R-31 – Masonry

In short, this classification allows to do everything with reinforcing steel as required for the licensee to install and repair masonry; brick; concrete block; insulating concrete forms; adobe units; stone; marble; slate; mortar-free masonry products.

R-34 – Painting and wall covering

To clarify, this classification allows to perform surface preparation to install, apply, and repair wallpaper; wall covering cloth; wall covering vinyl; decorative texture; paint; liquid floor and wall coatings.

R-36 – Plastering

To clarify, this classification allows to install laths, metal studs, etc.

R-37 – Plumbing, including solar

In short, this classification allows to install and repair of water and gas piping systems, fire protection as it relates to water sprinkler systems, and sewage treatment systems.

Moreover, this scope includes all R-37R sub-classifications.

R-37R Plumbing
Built-in Central Vacuum Systems
Kitchen and Bathroom Fixture Refinishing
Swimming Pool Plumbing and Equipment
Gas Piping
Sewers, Drains, and Pipe Laying
Solar Plumbing Liquid Systems Only

R-38 – Signs

To clarify, this classification allows to install and repair posts, paint, electrical wiring, etc. to install and repair signs, displays, and flagpoles.

R-39 – Air conditioning and refrigeration, including solar

To clarify, this classification allows to install and repair comfort air conditioning systems, including refrigeration, evaporative cooling, ventilating, and heating with or without solar equipment.

This scope includes all R-39R subclassifications.

R-39R Air Conditioning and Refrigeration
Temperature Control Systems
Warm Air Heating, Evaporative Cooling, and Ventilating
Evaporative Cooling and Ventilators

R-40 – Insulation

In short, this classification allows to install and repair insulation materials, including radiant barriers; preformed architectural acoustical materials; insulation protecting materials

R-41 – Septic tanks and systems

In short, this classification allows to excavate, install and repair pipe, backfill, and compact soil to install and repair septic tanks, aerobic digesters, leaching fields.

R-42 – Roofing

In short, this classification allows to apply, repair, or install weatherproofing or roof accessories to install and repair roof tile, shingles, shakes, slate, metal roofing systems, urethane foam, roof insulation, or coatings on or above the roof deck.

R-45 – Sheet metal

To clarify, this classification allows to install and repair sheet metal, cornices, flashings, gutters, leaders, pans, kitchen equipment, ductwork, skylights, patented chimneys, metal flues, metal roofing systems.

R-48 – Ceramic, plastic, and metal tile

To clarify, this classification allows to prepare a surface to install and repair the following tile products on horizontal and vertical surfaces ceramic, clay, finance, metal, mosaic, glass mosaic, paver, plastic, quarry, and stone tiles, terrazzo Installation of shower doors and tub enclosures.

R-53 – Drilling

To clarify, this classification allows to install and repair of wells, including test boring, exploratory drilling, etc.

R-54 – Water conditioning equipment

To clarify, this classification allows to perform all the necessary activities to install and repair water conditioning equipment, misting systems, exchange tanks, an indirect waste pipe carrying brine, backwash, and rinse water to the point of disposal.

R-56 – Welding

In short, this classification allows to weld metals.

R-57 – Wrecking

In short, this classification allows to install and repair temporary ramps, barricades, and pedestrian walkways to demolish, dismantle, or remove structures not intended for reuse.

R-60 – Finish carpentry

In short, this classification allows to install and repair millwork such as cabinets, countertops, case sash, door trim, metal doors, automatic door closers, wood flooring

R-61 – Carpentry, remodeling, and repairs

To clarify, for projects of $50,000 or less including labor and materials, this classification allows the licensee to perform all general remodeling, additions, replacements, etc.

R-62 – Minor home improvements

To clarify, for projects of $5,000 or less including labor and materials, this classification allows to perform remodeling, repairs, and improvements to existing structures or appurtenances.

R-65 – Glazing

In short, this classification allows to install and repair weatherproofing, caulking, sealants, and adhesives to assemble, install and repair glass products, window film, window treatments, such as blinds or shutters, steel and aluminum glass holding members.

R-67 – Low voltage communication systems

In short, this classification allows to build antenna towers on existing structures to install, service, and repair alarm systems, telephone systems, sound systems, intercommunication systems, public addressing systems, television or video systems, low voltage signaling devices, low voltage landscape lighting that does not exceed 91 volts, master and program clocks.

R-70 – Reinforcing bar and wire mesh

To clarify, this classification allows to install and repair reinforcing bar, post-tension, and wire mesh.

General dual engineering contracting

To clarify, this classification allows the scope of work permitted by the classifications in the brackets.

KA-Dual engineering (A+B4)
KA-5 – Dual swimming pool contractor (A-9+B-5)
KA-6 – Dual swimming pool contractor including solar (A-19+B-6)

General dual license contracting

KB-1- Dual building contractor (B-1+B)
KB-2- Dual residential and small commercial (B-2+B)

Specialty dual license contracting

CR-1- Acoustical systems (C-1+R-1)
CR-2 –Excavating, grading, and oil surfacing (A-5+R-2)
CR-3- Awnings, canopies, carport, and patio covers (C-3+R-3)
CR-4 – Boilers, steamfitting, and process piping (C-4+R-4)
CR-6 –Swimming pool service and repair (C-6+R-6)
CR-7- Carpentry (C-7+R-7)
CR-8- Floor covering (C-8+R-8)
CR-9- Concrete (C9+R9)
CR-10-Drywall (C-10+R-10)
CR-11-Electrical (C-11+R-11)
CR-12-Elevators (C-12+R-12)
CR-14-Fencing (C-14+R-14)
CR-15-Blasting (C-15+R-15)
CR-16-Fire protection systems (C-16+R-16)
CR-17-Steel and aluminum erection (A-11+R-17)
CR-21-Hardscaping and irrigation systems (C-21+R-21)
CR-24-Ornamental metals (C-24+R-24)
CR-31-Masonry (C-31+R-31)
CR-34-Paying and wall covering (C-34+ R-34)
CR-36 –Plastering (C-36+ R-36)
CR-37-Plumbing (C-37 + R-37R)
CR-38- Signs (C-38+R-38)
CR-39-Air conditioning and refrigeration (C-39+R-39R)
CR-40-Insulation (C-40+R-40)
CR-41-Septic tanks and systems (C-41+R-41)
CR-42-Roofing (C-42+R-42)
CR-45-Sheet metal (C-45+R-45)
CR-48-Ceramic, plastic and metal tile (C-48+R-48)
CR-53-Water well drilling (C-53+R-53)
CR-54-Water conditioning equipment (C-54+R-54)
CR-56-Welding (C-56+R-56)
CR-57-Wrecking (C-57+R-57)
CR-58-Comfort heating, ventilating, evaporative cooling (C-58+R-39R)
CR-60- Finish carpentry (C-60+R-60)
CR-61- Carpentry, remodeling, and repairs (C-61+R-61)
CR-62-Reinforcing bar and wire mesh
CR-65-Glazing (C-65+R-65)
CR-66-Seal coating (A-15+R-13)
CR-67-Low voltage communication systems (C-67+R-67)
CR-69-Asphalt paving (A-14+R-13)
CR-70-Reinforcing bar and wire mesh (C-70+R-70)
CR-74-Boilers, stem fitting, and process piping, including solar (C-74+R-4)
CR-77-Plumbing including solar (C-77+R-37)
R-78-Solar plumbing liquid systems only (C-78+R-37R)
CR-79-Air conditioning and refrigeration including solar (C-79+R-39)
CR-80-Sewers, drains and pipe laying (A-12+R-37R)

Specialty commercial contracting

C-1-Acoustical systems

To clarify, this classification allows to install and repair of pre-manufactured acoustical ceiling and wall systems.

C-3-Awnings, canopies, carports, and patio covers

In short, this classification allows to place concrete footings and concrete slabs to install and repair window awnings, door hoods, freestanding or attached canopies, carport, and patio covers constructed of metal, fabric, fiberglass, or plastic, fascia panels, flashing and skirting; and exterior, detached metal storage units not to exceed 120 square feet.

C-4-Boilers, steamfitting, and process piping

In short, this classification allows to install, alter, and repair steam and hot water systems and boilers.

C-6-Swimming pool service and repair

In short, this classification allows to replace and repair commercial pools and accessories including all existing connections and equipment.

C-7-Carpentry

To clarify, this classification allows to install and repair rough carpentry, finish carpentry, hardware, millwork, metal studs, metal doors, or door frames, windows.

C-8-Floor covering

To clarify, this classification allows to prepare a surface as required for the licensee to install and repair the following floor covering materials carpet, floor tile, wood, linoleum, vinyl, asphalt, rubber, concrete coatings.

C-9-Concrete

To clarify, this classification allows to install and repair concrete, concrete products, and accessories common to the industry.

C-10-Drywall

In short, this classification allows to install and repair gypsum wallboard, ceiling grid systems, movable partitions, wallboard tape, and texture, non-load bearing, lightweight, steel wall partitions.

C-11-Electrical

In short, this classification allows to install, alter, and repair any wiring, related electrical material, and equipment used in the generating, transmitting, or utilization of electrical energy less than 600 volts.

C-12-Elevators

In short, this classification allows to install and repair elevators, dumbwaiters, escalators, moving walks and ramps, stage and orchestra lifts.

C-14-Fencing

To clarify, this classification allows to install and repair elevators, dumbwaiters, escalators, moving walks and ramps, and stage and orchestra lifts.

C-15-Blasting

To clarify, this classification allows to drill, bore, move earth, and build temporary shelters or barricades using explosive devices for excavation, demolition, geological exploration, mining, and construction-related blasting.

C-16-Fire protection systems

To clarify, this classification allows to install, alter, and repair of fire protection systems using water, steam, gas, or chemicals.

C-21-Hardscaping and irrigation systems

To clarify, this classification allows to install, alter, and repair non-loadbearing concrete, uncovered patios, walkways, driveways made of brick, stone, pavers, or gravel; wooden decks no higher than 29 inches above finish grade; decorative garden walls up to six feet from finish grade; fences and screens up to six feet from finish grade; retaining walls up to three feet from the finish grade of the lower elevation, etc.

C-24-Ornamental metals

In short, this classification allows to install, alter, or repair non-structural ornamental metal, such as metal folding gates, guard and handrails, wrought iron fencing and gates, window shutters and grilles, room dividers and shields, and metal accessories common to the industry.

C-27-Lightweight partitions

In short, this classification allows to install lightweight metal wall partitions, including suspended metal ceiling grid systems, etc.

C-31-Masonry

In short, this classification allows to do required jobs to install and repair masonry, brick, concrete block, insulating concrete forms, adobe units, stone, marble, slate, mortar-free masonry products.

C-34-Painting and wall covering

To clarify, this classification allows to perform surface preparation to install, apply or repair wallpaper, wall covering cloth, wall covering vinyl, decorative texture, paint, liquid floor, and wall coatings.

C-36-Plastering

To clarify, this classification allows to install laths, metal studs, metal grid systems, or other bases to coat surfaces by trowel or spray with combinations of sand mixtures, gypsum plaster, cement, acoustical plaster, swimming pool interiors.

C-37-Plumbing

That is to say, 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.
Moreover, installation, alteration, and repair of all piping, fixtures, and appliances related to a water supply.

C-38-Signs

In short, this classification allows to install and repair posts, poles, supports, paint, and electrical wiring as required for the licensee to install and repair signs, displays, and flagpoles.

C-39-Air conditioning and refrigeration

In short, this classification allows to install, alter, and repair refrigeration and evaporative cooling systems.

C-40-Insulation

In short, this classification allows to install and repair insulation materials, including radiant barriers; preformed architectural acoustical materials; and insulation protecting materials.

C-41-Septic tanks and systems

To clarify, this classification allows to excavate, install and repair pipe, backfill, and compact soil to install and repair septic tanks, aerobic digesters, and leaching fields.

C-42-Roofing

To clarify, this classification allows to apply, repair, or install weatherproofing or roof accessories to install and repair roof tile, shingles, shakes, slate, metal roofing systems, and urethane foam, etc.

C-45-Sheet metal

To clarify, this classification allows to install and repair sheet metal, cornices, flashings, gutters, leaders, pans, kitchen equipment, ductwork, skylights, patented chimneys, metal flues, and metal roofing systems.

C-48-Ceramic, plastic and metal tile

In short, this classification allows to prepare a surface to install and repair the following tile products on horizontal and vertical ceramic, clay, faience, metal, mosaic, glass mosaic, paver, plastic, quarry and stone tiles such as marble or slate, and terrazzo surfaces.

C-49-Refrigeration

To clarify, this classification allows to install, alter, and repair refrigeration equipment and systems used for processing, storage, and display of food products and other perishable commodities.

C-53-Water well drilling

To clarify, this classification allows to 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.

C-54-Water conditioning equipment

In short, this classification allows to perform trenching, backfilling and grading to install and repair water conditioning equipment, misting systems, exchange tanks; and an indirect waste pipe carrying brine, backwash, and rinse water to the point of disposal.

C-56-Welding

To clarify, this classification allows to weld metals.

C-57-Wrecking

To clarify, this classification allows to install and repair temporary ramps, barricades, and pedestrian walkways to demolish, dismantle, or remove structures not intended for reuse.

C-58-Comfort heating, ventilating, evaporative cooling

To clarify, this classification allows to install, alter, and repair warm air heating systems, gas-fired furnaces and space heaters, ventilation and evaporative cooling units, or any combination of these.

C-60-Finish carpentry

In short, this classification allows to install and repair millwork such as:

1. Cabinets
2. Countertops
3. Case sash
4. Door trim
5. Metal doors
6. Automatic door closers
7. Wood flooring
8. C-61-Carpentry, remodeling, and repairs

To clarify, for projects of $50,000 or less including labor and materials, this classification allows to perform all general remodeling, additions, replacements, and repairs to existing structures.

C-65-Glazing

In short, this classification allows to install and repair weatherproofing, caulking, sealants, and adhesives to install and repair glass products, window film, window treatments, such as blinds or shutters; and steel and aluminum glass holding members.

C-67-Low voltage communication systems

In short, this classification allows to build antenna towers on existing structures to install, service, and repair alarm, telephone, sound, intercommunication, public addressing, television or video systems, low voltage signaling devices, low voltage landscape lighting that does not exceed 91 volts, and master and program clocks.

C-70-Reinforcing bar and wire mesh

In short, this classification allows to install and repair reinforcing bar, post-tension, and wire mesh.

C-74-Boilers, steamfitting and process piping, including solar

In short, this classification allows to install, alter, and repair steam and hot water systems and boilers including solar.

C-77-Plumbing including solar

In short, this classification allows to install, alter, and repair all plumbing including solar.

C-78-Solar plumbing liquid systems only

To clarify, this classification allows to install, alter, and repair solar water heating systems.

C-79-Air conditioning and refrigeration including solar

To clarify, this classification allows to install, alter, and repair of refrigeration and evaporative cooling systems, including solar.