Arizona Contractor License Classifications
The Arizona Registrar of Contractors issues separate licenses for residential and commercial work — and dual licenses covering both — for each trade. These 15 classifications carry their official scope text exactly as the ROC publishes it, grouped by the fee table's families, with the source and verification date on every row.
01 The classification axis
RESIDENTIAL/COMMERCIAL/DUAL
- Residential contracting (verbatim ROC definition) — "constructing, altering, repairing, adding to, subtracted from, improved, moved, wrecked or demolished any residential structure… and 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." S-AZ-ROC-CLASS
- Commercial contracting — anything other than residential (ROC's own definition). S-AZ-ROC-CLASS
- Dual (CR / KA / KB) — one license covering both axes; for the bond, the dual amount is the residential plus commercial amount combined. S-AZ-ROC-BOND
No per-classification pages — yet
The ROC's per-classification "License Classification Requirements" PDF (experience and exam detail) was blocked by a Cloudflare interstitial during research, so a page per classification would repeat this table without adding verified facts. Those routes are marked absent in the index policy instead of being published thin. Only the statutory minimum experience (4 years, 2 within the last 10 — A.R.S. §32-1122(E)) applies across classifications.
02 General Residential
| Code | Classification | Official scope | Trades | Source |
|---|---|---|---|---|
| B-3 | General Remodeling and Repair Contractor | May remodel or repair an existing residential structure except electrical, plumbing, mechanical, boilers, pools, spas and water wells, which must be subcontracted to an appropriately licensed contractor; includes the R-7 carpentry scope. | General Contracting, Remodeling | S-AZ-ROC-CLASS |
| B | General Residential Contractor | May construct, repair or improve any part of a residential structure; electrical, plumbing, air conditioning, boilers, pools, spas and water wells must be subcontracted to an appropriately licensed contractor. | General Contracting | S-AZ-ROC-CLASS |
03 General Commercial
| Code | Classification | Official scope | Trades | Source |
|---|---|---|---|---|
| B-2 | General Small Commercial Contractor | For projects of $2,000,000 or less including labor and materials; electrical, plumbing, air conditioning, boilers, pools, spas and water wells must be subcontracted to an appropriately licensed contractor. | General Contracting | S-AZ-ROC-CLASS |
04 Specialty Residential (R)
| Code | Classification | Official scope | Trades | Source |
|---|---|---|---|---|
| R-11 | Electrical (residential) | Install and repair residential electrical systems. | Electrical | S-AZ-ROC-CLASS |
| R-37 | Plumbing, Including Solar (residential) | Water and gas piping, fire sprinklers (water), sewage treatment, fixtures and vents, and solar; all R-37R subclassifications (several closed to new licenses). | Plumbing | S-AZ-ROC-CLASS |
| R-39 | Air Conditioning and Refrigeration, Including Solar (residential) | Comfort air conditioning, refrigeration, evaporative cooling, ventilating and heating systems, with or without solar; 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. | HVAC | S-AZ-ROC-CLASS |
| R-42 | Roofing (residential) | Weatherproofing and roof accessories; roof tile, shingles, shakes, slate, metal, urethane foam, insulation and coatings; substrate replacement up to 10 percent of the total roof substrate square footage after the contract, above which the licensee must subcontract; skylights where no framing or structural change is involved; fascia up to 24 linear feet; may lift HVAC equipment but must subcontract if ducting modification is needed. | Roofing | S-AZ-ROC-CLASS |
| R-61 | Carpentry, Remodeling and Repairs | For projects of $50,000 or less including labor and materials: all general remodeling, additions, replacements and repairs to existing structures; electrical, plumbing, air conditioning and boilers must be subcontracted to an appropriately licensed contractor. | Remodeling | S-AZ-ROC-CLASS |
| R-62 | Minor Home Improvements | For projects of $5,000 or less including labor and materials: remodeling, repairs and improvements to existing structures or appurtenances; no structural work (no load-bearing masonry or concrete except on-grade flat work; no load-bearing carpentry except patio or porch covers); electrical, plumbing, air conditioning and boilers must be subcontracted to an appropriately licensed contractor. | Remodeling | S-AZ-ROC-CLASS |
05 Specialty Commercial (C)
| Code | Classification | Official scope | Trades | Source |
|---|---|---|---|---|
| C-11 | Electrical (commercial) | Wiring, material and equipment under 600 volts, including public right-of-way overhead installations and private underground installations. | Electrical | S-AZ-ROC-CLASS |
| C-37 | Plumbing (commercial) | Within property lines: water supply, venting and sanitary drainage; septic and leaching systems; gas, air, vacuum and oil piping; hot-water supply systems operating at pressures not exceeding 30 PSIG or temperatures not exceeding 220°F; steam not exceeding 15 PSIG; and related work. | Plumbing | S-AZ-ROC-CLASS |
06 Specialty Dual (CR)
| Code | Classification | Official scope | Trades | Source |
|---|---|---|---|---|
| CR-11 | Electrical (dual) | Scopes of both C-11 (commercial electrical, under 600 volts) and R-11 (residential electrical). | Electrical | S-AZ-ROC-CLASS |
| CR-37 | Plumbing (dual) | Scopes of both C-37 (commercial plumbing) and R-37R (residential plumbing subclassifications). | Plumbing | S-AZ-ROC-CLASS |
| CR-39 | Air Conditioning and Refrigeration (dual) | Scopes of both C-39 (commercial air conditioning and refrigeration) and R-39R (residential air conditioning and refrigeration subclassifications). | HVAC | S-AZ-ROC-CLASS |
| CR-42 | Roofing (dual) | Scopes of both C-42 (commercial roofing) and R-42 (residential roofing, including the 10 percent substrate rule). | Roofing | S-AZ-ROC-CLASS |
07 Deterministic scope limits
- arizona:r-42 — roof substrate replacement up to 10 percent (ROC R-42 scope (roc.az.gov/license-classifications)) S-AZ-ROC-CLASSVerbatim scope text: the R-42 licensee may replace up to 10 percent of the total roof substrate square footage after the roofing contract; more than 10 percent requires the licensee to subcontract (SCOPE-AZ-R42-SUBSTRATE-GT10). Encoded deterministically by rule AZ-ROOFING.
- arizona:r-42 — subcontracting of substrate replacement above 10 percent (ROC R-42 scope (roc.az.gov/license-classifications)) S-AZ-ROC-CLASSAbove the 10% substrate threshold an R-42 licensee must subcontract the substrate work. A general residential license (B or B-3) covers roofing without this limit — recorded as an alternative relation on the roof-replacement project, not as a scope row.
- arizona:r-39 — installation of new service panel or sub panel (ROC R-39 scope (roc.az.gov/license-classifications)) S-AZ-ROC-CLASSVerbatim: '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.' Installing a new service panel or sub-panel therefore requires another classification — electrical (R-11 residential, C-11 commercial, or the dual CR-11). Encoded by rule AZ-HVAC-PANEL.
- arizona:r-62 — structural work beyond on grade flat work and patio porch covers (ROC R-62 scope (roc.az.gov/license-classifications)) S-AZ-ROC-CLASSVerbatim limits of R-62 Minor Home Improvements (projects of $5,000 or less): NO structural work — no load-bearing masonry or concrete except on-grade flat work, no load-bearing carpentry except patio or porch covers. Beyond those limits the classification does not apply.
- arizona:r-61 — general remodeling additions replacements and repairs up to 50000 (ROC R-61 scope (roc.az.gov/license-classifications)) S-AZ-ROC-CLASSVerbatim: 'For projects of $50,000 or less including labor and materials' — all general remodeling, additions, replacements and repairs to existing structures, with electrical, plumbing, air conditioning and boilers subcontracted to an appropriately licensed contractor.
- arizona:b-3 — subcontracting of electrical plumbing mechanical boiler pool spa and water well work (ROC B-3 scope (roc.az.gov/license-classifications)) S-AZ-ROC-CLASSVerbatim: a B-3 General Remodeling and Repair licensee subcontracts electrical, plumbing, mechanical, boilers, pools, spas and water wells unless also holding that specialty — rule AZ-REMODEL-TRADES encodes both branches. A.R.S. §32-1121(B) independently provides that a license in a particular trade covers mechanical or structural service within its own scope (REQ-AZ-INTRA-TRADE-001).
These limits are also encoded in the deterministic rules (AZ-ROOFING, AZ-HVAC-PANEL, AZ-REMODEL-TRADES, AZ-MINI-JOB, AZ-GAS-CONNECTION) that the project pages evaluate.
08 Sources
S-AZ-ROC-CLASSboard page
License Classifications | Arizona Registrar of Contractors
https://roc.az.gov/license-classificationsS-AZ-1121statute
A.R.S. §32-1121 — Persons not required to be licensed; penalties; applicability
https://www.azleg.gov/ars/32/01121.htmSource S-AZ-ROC-CLASS — Arizona Registrar of Contractors (ROC)
License Classifications | Arizona Registrar of Contractors — roc.az.gov/license-classifications — scope text read verbatim 2026-10-02
https://roc.az.gov/license-classifications
Retrieved 2026-10-02 · last verified 2026-10-02
Read verbatim 2026-10-02 (HTTP 200). Source of: the $1,000 / permit licensing threshold quote; the business-vs-qualifying-party credential model; the residential/commercial/dual classification axis; and the verbatim scope text of every seeded classification (B, B-2, B-3, R-11, R-37, R-39, R-42 incl. the 10% substrate rule, R-61 $50,000 cap, R-62 $5,000 cap + no-structural limit, C-11, C-37, CR-11, CR-37, CR-39, CR-42). The page also carries the FAQ whose 'exceed $1,000' phrasing conflicts with the statute at the exact boundary (CONFLICT-AZ-002). Per-classification requirement PDFs linked from this page were blocked by a Cloudflare interstitial and are NOT used.