Residential permit rules in Arizona
Representative cities: Phoenix, Tucson. Covers 20 common home projects.
Check a home project's permit in Arizona
Select a project to see its Arizona permit requirement, fee range, timeline, go / no-go, and the official source to verify.
Arizona
Exact permit fees are set by the local building department. WikEst shows the published or code-based range where one exists, linked to its official source — verify the final amount at the source before budgeting.
🏠 Accessory Dwelling Unit (ADU) permit fee in Arizona
Permit requiredGenerally allowedcity authority
Permit fee range
Valuation-based; set by the issuing city.
Typical timeline
Phoenix ~30–90 days; Tucson ministerial review since the Nov 2024 UDC amendment.
Setback
Phoenix: 5 ft rear, 3 ft side (R1 zones); Tucson per the Unified Development Code.
Exempt if
Phoenix max 1,000 sq ft; Tucson allows ≥1 ADU per lot (up to 2 on lots with an existing home).
Exempt criteria: None — an ADU (casita) always requires a building permit.
Arizona has no statewide ADU law. Phoenix and Tucson both allow ADUs by local ordinance; Tucson review is ministerial under state HB 2720.
Official sources: City of Phoenix — Planning & Development (Residential) · City of Tucson — Permit Exemptions & ADU
Representative cities for Arizona: Phoenix, Tucson.
All 20 project fee ranges in Arizona
Official-source ranges where published; “By local jurisdiction” means no flat fee is published and the amount is set case by case.
| Project | Permit? | Authority | Fee range | Go / no-go |
|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | yes | city | Valuation-based; set by the issuing city. | allowed |
| 🪵 Deck / Porch | conditional | city | Valuation-based; Phoenix base building-permit fee is $150. | allowed |
| 🧱 Fence / Wall | conditional | city | Phoenix minimum permit fee $75 for fences; over-the-counter for non-corner lots under 6 ft. | allowed |
| 🛖 Shed / Outbuilding | conditional | city | Valuation-based; site-plan-only permits for small sheds in Tucson. | allowed |
| 🪜 Basement Finish | yes | city | Valuation-based; includes trade permits. | allowed |
| 🚗 Garage / Carport | yes | city | Valuation-based; includes trade permits. | allowed |
| ☀️ Rooftop Solar PV | yes | city | Building + electrical permits; fee set by city. | allowed |
| 🌡️ HVAC Replacement | conditional | city | Mechanical permit; fee set by city (often ~$50 in county trade schedules). | allowed |
| 🍳 Kitchen Remodel | conditional | city | Valuation-based when structural/plumbing/electrical work is included. | allowed |
| 🛁 Bathroom Remodel | conditional | city | Valuation-based when plumbing is relocated. | allowed |
| 🏗️ Room Addition | yes | city | Valuation-based; includes trade permits. | allowed |
| 🪟 Window / Door Replacement | conditional | city | Usually no fee for in-kind swap; permit needed if opening is enlarged. | allowed |
| 🏘️ Roof Replacement | conditional | city | Often over-the-counter or exempt for same-footprint re-roof. | allowed |
| 🅿️ Driveway / Parking Pad | conditional | city | Building permit often not required; curb-cut/right-of-way work is separate. | allowed |
| 🏊 Swimming Pool / Spa | yes | city | Valuation-based; includes barrier/fencing and electrical bonding review. | allowed |
| 🧱 Retaining Wall | conditional | city | Valuation-based when over the height threshold. | allowed |
| 💥 Demolition / Teardown | yes | city | Demolition permit fee set by the issuing city. | allowed |
| 🚰 Septic System | yes | county | Septic (OWTF) permit fees set by the county environmental/health department. | allowed |
| 🔌 EV Charger | conditional | city | Electrical permit fee set by the issuing city. | allowed |
| ⚡ Standby Generator | yes | city | Electrical (and often mechanical/gas) permit fee set by the issuing city. | allowed |
| Project | Permit? | Authority | Typical fee | Timeline | Go / No-Go | Key notes |
|---|---|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | Permit required | city | Valuation-based; set by the issuing city. | Phoenix ~30–90 days; Tucson ministerial review since the Nov 2024 UDC amendment. | Generally allowed | Arizona has no statewide ADU law. Phoenix and Tucson both allow ADUs by local ordinance; Tucson review is ministerial under state HB 2720. Exempt: Phoenix max 1,000 sq ft; Tucson allows ≥1 ADU per lot (up to 2 on lots with an existing home). |
| 🪵 Deck / Porch | Conditional | city | Valuation-based; Phoenix base building-permit fee is $150. | Over-the-counter or 1–3 weeks depending on complexity. | Generally allowed | Attached decks with a structural ledger connection should be verified with the building department. Exempt: Decks ≤30 in above grade (and not over a basement) are exempt. |
| 🧱 Fence / Wall | Conditional | city | Phoenix minimum permit fee $75 for fences; over-the-counter for non-corner lots under 6 ft. | Non-corner-lot fences under 6 ft processed same-day in Phoenix. | Generally allowed | Pool-enclosure fences must meet Arizona’s statewide barrier requirements (ARS §36-1681). Exempt: Phoenix: fences ≤3 ft exempt; Tucson requires a permit for fences/walls. |
| 🛖 Shed / Outbuilding | Conditional | city | Valuation-based; site-plan-only permits for small sheds in Tucson. | Small sheds often same-day/over-the-counter. | Generally allowed | Tucson is stricter than most of Arizona — even a tiny shed needs a permit there. Exempt: Phoenix: detached structures >200 sq ft require a permit; Tucson: all sheds require a permit regardless of size. |
| 🪜 Basement Finish | Permit required | city | Valuation-based; includes trade permits. | Standard plan review 2–4 weeks. | Generally allowed | Basements are uncommon in Arizona but the same permitting logic applies when finished. Exempt: Cosmetic finishing (paint, flooring) is exempt. |
| 🚗 Garage / Carport | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review. Exempt: Phoenix: new detached structures over 200 sq ft require a permit. |
| ☀️ Rooftop Solar PV | Permit required | city | Building + electrical permits; fee set by city. | Tucson: residential PV <15 kW is expedited over-the-counter, often same-day. | Generally allowed | Provide proof of racking structural design for tile or flat-roof installations. Exempt: No size exemption; large/ground-mounted systems need structural review. |
| 🌡️ HVAC Replacement | Conditional | city | Mechanical permit; fee set by city (often ~$50 in county trade schedules). | Trade permits often issued same-day. | Generally allowed | Equipment must meet current energy-efficiency rules. Exempt: In-kind replacement in the same location may be exempt in Phoenix. |
| 🍳 Kitchen Remodel | Conditional | city | Valuation-based when structural/plumbing/electrical work is included. | Standard review for permitted scopes. | Generally allowed | Phoenix energy code is strict on remodels (insulation, window U-factor, HVAC). Exempt: Cabinet/countertop swap in the same layout is exempt. |
| 🛁 Bathroom Remodel | Conditional | city | Valuation-based when plumbing is relocated. | Standard review for permitted scopes. | Generally allowed | Ventilation to the exterior is required. Exempt: Fixture-for-fixture swap in place is often exempt. |
| 🏗️ Room Addition | Permit required | city | Valuation-based; includes trade permits. | Phoenix 3–4 weeks plan review; 4–5 inspections. | Generally allowed | Lot-coverage and energy-code compliance are reviewed. Exempt: No exemption — any new conditioned footprint requires a permit. |
| 🪟 Window / Door Replacement | Conditional | city | Usually no fee for in-kind swap; permit needed if opening is enlarged. | In-kind swaps typically need no review. | Generally allowed | Replacement products should meet energy-code U-factor when the code is triggered. Exempt: Same-size, in-kind replacement is generally exempt. |
| 🏘️ Roof Replacement | Conditional | city | Often over-the-counter or exempt for same-footprint re-roof. | Phoenix re-roof can be same-day/next-business-day if submitted before 3 p.m. | Generally allowed | Dust-control plans may be required during summer excavation/cutting. Exempt: Same-material, same-slope re-roof often exempt/over-the-counter. |
| 🅿️ Driveway / Parking Pad | Conditional | city | Building permit often not required; curb-cut/right-of-way work is separate. | Right-of-way permits reviewed by the city/utility. | Generally allowed | A separate right-of-way permit is usually needed to cut the curb or connect to the street. Exempt: Replacing a driveway in the same footprint (no new curb cut) is generally exempt. |
| 🏊 Swimming Pool / Spa | Permit required | city | Valuation-based; includes barrier/fencing and electrical bonding review. | Plan review 4–6 weeks; barrier inspection required before filling. | Generally allowed | Arizona’s statewide pool-barrier law (ARS §36-1681) applies in every jurisdiction. Exempt: No exemption — all pools/spas require a permit. |
| 🧱 Retaining Wall | Conditional | city | Valuation-based when over the height threshold. | Over-threshold walls need plan review. | Generally allowed | Walls in hillside/overlay zones have stricter rules. Exempt: Walls ≤30 in above grade and not supporting a surcharge are often exempt. |
| 💥 Demolition / Teardown | Permit required | city | Demolition permit fee set by the issuing city. | — | Generally allowed | A full teardown or major structural demolition requires a building/demolition permit from the city or county building department (Phoenix and Tucson issue them). Permits commonly require proof of utility disconnects and, for structures built before 1978, an asbestos/lead-paint survey before teardown. Interior non-structural strip-out may be exempt. |
| 🚰 Septic System | Permit required | county | Septic (OWTF) permit fees set by the county environmental/health department. | — | Generally allowed | New or replacement onsite wastewater (septic) systems are permitted by the county environmental/health department under the Arizona ADEQ Onsite Wastewater program (ADEQ delegates to the 15 counties) — a standard building permit does NOT cover septic. A Notice of Intent, site/soil evaluation, and engineered design are required. |
| 🔌 EV Charger | Conditional | city | Electrical permit fee set by the issuing city. | — | Generally allowed | A home EV charging station needs an electrical permit for the dedicated 240V circuit and wall unit, issued by the city building department (Phoenix and Tucson issue them). Arizona has no single statewide EV-permitting fast-track, so review time varies by city. Work must meet the NEC; HOAs may add restrictions. |
| ⚡ Standby Generator | Permit required | city | Electrical (and often mechanical/gas) permit fee set by the issuing city. | — | Generally allowed | A permanently installed standby generator with a transfer switch and fuel (gas/propane) line requires electrical and often mechanical/gas permits, plus inspection. Setback, noise, and carbon-monoxide rules may apply, and HOAs may restrict installation. Verify setback and fuel-line rules with the city building department. |
Homeowner Tools
Frequently asked questions
Do I need a building permit for home projects in Arizona?
Most structural, electrical, plumbing, and mechanical work does. The project table above shows Arizona-specific permit requirements for 20 common home projects. Always confirm with the local building department before starting.
Who issues building permits in Arizona?
Arizona permit authorities are typically city or county building departments. Use the county permit authority lookup to find the exact office for your property.
Which home projects are exempt from permits in Arizona?
Common baseline exemptions apply widely: detached sheds ≤120 sq ft, fences ≤6–7 ft, decks ≤30 in above grade, same-footprint re-roofs, and in-kind window/door swaps. Arizona or your city may amend these — verify locally.
How much does a permit cost in Arizona?
Permit fees are set by each city or county and scale with project valuation; there is no single Arizona statewide fee. Open the official authority link on this page for the local fee schedule.