What Can You Build Without a Permit in Arizona? (2026)
The 30-second answer for Arizona
In Arizona, the projects you can usually build without a building permit are a small detached shed, a short freestanding deck, a fence under the height cap, a low retaining wall, and cosmetic interior work. The exact limits Arizona enforces are in the table below — and your city can be stricter than the state. The catch every homeowner needs to hear: even when no permit is required, the building code, zoning setbacks, and any HOA rules still apply. Permit-exempt means the paperwork is waived, not the rules.
How Arizona sets the rules
Arizona has NO statewide building code — it is home-rule, so every city and county adopts and amends its own code, and unincorporated land follows the county. The two largest cities both use the 2024 I-Codes: Phoenix's 2024 Building Construction Code (Ordinance G-7397) took effect August 1, 2025, and Tucson adopted the 2024 IBC/IRC with local amendments effective January 1, 2026. There is no default code where a jurisdiction has not adopted one.
Permit-exempt limits in Arizona
These are the thresholds we verified for Arizona. Treat each one as the most you can usually do without pulling a permit — a stricter city amendment always wins.
| Project | Arizona permit-exempt limit |
|---|---|
| Detached shed / accessory building | No statewide rule. Phoenix and Tucson both exempt a one-story detached storage shed of 200 sq ft or less (IRC/IBC baseline, as amended) if it has no plumbing, gas, or electrical and meets zoning setbacks; running utilities or exceeding 200 sq ft requires a permit. Phoenix additionally exempts an unaltered shipping container up to 320 sq ft used as an accessory structure. |
| Deck | No statewide rule. Phoenix and Tucson exempt a deck/platform 30 inches or less above adjacent grade that is not over a basement or story below and not part of an accessible route or required exit. Neither city applies the IRC's 200 sq ft cap or 'not attached' condition — height and location govern — but zoning setbacks and the structural code still apply. |
| Fence | Deviates from the IRC 7-ft baseline. Phoenix exempts only fences 3 ft or less; fences 3-7 ft need a permit for zoning/city-code review, and over 7 ft a full permit. Tucson requires a permit for zoning review of essentially all fences and walls, with engineered plans if the fence/wall is over 6 ft or acts as a retaining wall. Do not assume a 6-ft fence is permit-free. |
| Retaining wall | Phoenix (verified): exempt only if 40 inches or less, measured from the TOP of the footing to the top of the wall, and not supporting a surcharge — stricter than the IRC's 4 ft from the bottom of the footing. Tucson treats any wall that holds back soil or changes grade as a retaining wall requiring a permit and often engineered plans; confirm the exact height threshold with PDSD. |
| Patio (on grade) | On-grade patios: Phoenix exempts platforms/sidewalks/patios 30 inches or less above grade and not over a basement; Tucson exempts non-structural paving/flatwork (walkways, patios, slabs) under 3,000 sq ft, with 3,000 sq ft or more requiring a permit. A roofed patio cover, ramada, or carport is NOT exempt in either city. |
Baseline: 2021 International Residential Code, Section R105.2. See the national project-by-project guide for how each threshold works.
Can you do the work yourself in Arizona?
Yes — statewide under ARS 32-1121. A property owner may act as owner-builder and pull the permit to build or improve their own home without a contractor license if the structure is for their own occupancy, not for sale or rent. Selling or renting within one year of completion is prima facie evidence it was built for sale, which voids the exemption. Most AZ cities require a signed owner-builder affidavit at permit issuance.
What's different about Arizona
No statewide code — the rules change at every city line
Arizona has no state building code. Each city and county writes its own permit and exemption rules, so a shed, fence, or wall that is exempt in Phoenix may need a permit in Tucson, and unincorporated county land follows the county. Never rely on a statewide number.
The IRC 7-foot fence exemption does not apply in Phoenix or Tucson
Homeowners often assume any fence under 7 feet is permit-free. Phoenix requires a permit for any fence over 3 feet, and Tucson requires a zoning-review permit for essentially all fences and walls. Walls over 6-7 feet, or any wall that retains soil, also need engineered plans.
Above-ground pools are exempt only under 18 inches deep
Both Phoenix and Tucson cut the model-code 24-inch pool exemption to 18 inches: a prefab above-ground pool is permit-exempt only if under 18 inches deep and 5,000 gallons or less. Any pool holding more water needs a permit, and pool barriers are regulated regardless of pool size.
"Permit-exempt" does not mean rule-free
I spent 25 years as a firefighter before I built PermitDeck, so let me be blunt about the part that gets people hurt. "No permit" never means "no rules." When a project is exempt in Arizona, three things are still true — and now you are the one responsible for them, because no inspector is coming to check:
- Building code still applies. An exempt deck in Arizona still has to meet the structural rules of IRC R507 — real footings, a proper ledger, and guards. A shed still has to carry your local snow and wind load. The code does not care whether a permit was pulled.
- Zoning and setbacks still apply. Exempt does not mean you can put it anywhere. Setbacks from property lines, easements, lot-coverage caps, and corner-lot sight lines all still bind you — and a neighbor complaint can force you to move it.
- HOA rules are separate. Your HOA architectural review is a private contract, not a government permit. You can be fully permit-exempt with your city and still be forced by your HOA to tear something out.
The big Arizona cities
Permits are pulled locally, so your city's building department has the final word. Here are the two largest, with a link straight to their office.
Phoenix
SHAPE PHX is the city's online permit portal. Exemptions are set in the 2024 Phoenix Building Construction Code Sec. 105.2 (Ordinance G-7397, effective Aug 1, 2025); the city's 'Work Exempt from Permit' handout lists them. Zoning setbacks and HOA rules still apply even when a permit is not required.
Phoenix building departmentTucson
Tucson PDSD's 'Do I Need a Permit? (Exemptions)' page lists residential exemptions under the 2024 I-Codes (effective Jan 1, 2026). A city permit does not exempt you from HOA CC&Rs.
Tucson building departmentTurns out you do need a permit? We'll match you with pros who pull it
If your project crosses one of these Arizonathresholds, the cleanest path is to hire a licensed pro who pulls the permit in their own name and stands behind the inspection. Tell us the project once and we'll send it to up to three verified local pros. It's free, it's capped at three, and we never sell your information — the opposite of the lead-farm sites.
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What happens if you needed a permit and skipped it
Guessing wrong on the exemption is not a small risk. The common outcomes are a stop-work order, a fine (often double the normal permit fee), and being ordered to open finished work back up for inspection or tear it out. The expensive part usually lands later: unpermitted work routinely kills a home saleat the buyer's inspection, and an insurance claim can be denied if the damage traces back to unpermitted construction. Most jurisdictions do allow a retroactive (after-the-fact) permit — it costs more, but it clears the record.
Full detail: what happens if you build without a permit and how to get a building permit.
Arizona permit-exemption FAQs
Does Arizona have a statewide building permit exemption list?
No. Arizona has no statewide building code — it is home-rule, so each city and county sets its own permit and exemption rules, and there is no default statewide exemption. Always confirm with your local building department. The two largest cities, Phoenix and Tucson, both now use the 2024 IRC and IBC with local amendments.
Can I build a shed without a permit in Arizona?
In Phoenix and Tucson, yes. A detached storage shed of 200 square feet or less is permit-exempt if it has no plumbing, gas, or electrical wiring and meets zoning setbacks. Running utilities or going over 200 square feet requires a permit. Phoenix also exempts an unaltered shipping container up to 320 square feet. Other jurisdictions differ, so verify locally.
Do I need a permit for a fence in Phoenix or Tucson?
Usually yes. Unlike the IRC's 7-foot exemption, Phoenix requires a permit for any fence over 3 feet tall, and Tucson requires a zoning-review permit for essentially all fences and walls. Anything over 6 to 7 feet, or a wall that holds back soil, needs engineered plans. Don't assume a 6-foot fence is permit-free in Arizona's largest cities.
Can I pull my own building permit as a homeowner in Arizona?
Yes. Under Arizona Revised Statutes 32-1121, a property owner may act as owner-builder and pull the permit to build or improve their own home without a contractor license, provided it is for their own occupancy. Selling or renting within one year of completion is prima facie evidence the work was for sale, voiding the exemption. Many cities require a signed affidavit.
Sources we verified against
Every threshold on this page is anchored to Arizona's building code or the sources listed above. Where a number varies by city and we could not verify it, we say "verify locally" rather than guess — a permit page you cannot trust is worse than no page at all.
Find a verified pro in Arizona
Permit or not, a licensed pro builds it to code the first time. Browse our verified directories — phone and website on every listing, and we never sell your info.
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