Arizona permit requirements

We have read and dated 93 permit rules across 9 jurisdictions in Arizona. They do not all say the same thing: patio thresholds alone run from 200 to 3,000 sq ft across 2 of them.

Jurisdictions: 9
Verified rules: 93
Permit always required: 41
Depends on the project: 52

Do you need a building permit in Arizona?

Usually it depends on the size of the job, and the size that decides it is not set by Arizona: permits are issued by the city or county, not the state, so the rule that governs your project is the one your own jurisdiction publishes. 41 of those local rules require a permit outright, 52 depend on a size or scope condition the office publishes, and 0 need none. Arizona sets the building code those local rules derive from; your city or county sets the threshold and the fee.

Do Arizona jurisdictions agree?

Every row below is a measurement at least two Arizona jurisdictions publish, compared against each other. This is the question a statewide answer cannot settle, because the number that governs your project is the one your own city or county publishes.

Project	Published threshold	Jurisdictions	Agreement
Patio	200 to 3,000 sq ft	2	2 different numbers
Fence	1 to 7 feet	8	4 different numbers
Shed	120 to 200 sq ft	8	2 different numbers
Deck	30 inches	4	Same number in all 4
Pool	18 inches	3	Same number in all 3
Patio	30 inches	2	Same number in all 2

3 of 6 comparable measurements are uniform across Arizona; 3 are not. Latest verification 2026-10-23.

Where Arizona jurisdictions split

The verdict for each project across the 9 Arizona jurisdictions we cover. On 9 of 13 projects they do not give the same answer, which is why a statewide answer is not one.

Project	Permit required	Depends	Across the state
Deck	3	6	Answer varies
Electrical	6	3	Answer varies
Fence	1	8	Answer varies
HVAC	6	3	Answer varies
Patio	2	7	Answer varies
Plumbing	6	3	Answer varies
Pool	6	3	Answer varies
Shed	1	8	Answer varies
Solar	8	1	Answer varies
Roof Replacement		9	Same answer everywhere
Bathroom Remodel		1	Same answer everywhere
EV Charger	1		Same answer everywhere
Water Heater	1		Same answer everywhere

Building without a permit in Arizona

Arizona has no state agency that issues building permits and no single statewide crime for building without one. State law instead authorizes cities to adopt and enforce their own codes as ordinances (A.R.S. Title 9) and counties to do the same in zoned unincorporated areas (A.R.S. Title 11), with municipal zoning and permit rules enforced the same way as any other city ordinance under A.R.S. 9-462.05.

Penalties, the as-built path, and what the statute actually says

What you can build without a permit in Arizona

0 of the 93 answered rules across Arizona need no permit at all and 52 turn on a size or scope condition the jurisdiction publishes, by project and jurisdiction, in each office's own words.

The exemptions and conditions, jurisdiction by jurisdiction

What a permit costs in Arizona

There is no single Arizona permit fee. Each jurisdiction in Arizona sets and publishes its own, and they do not use the same pricing model, so the figure that applies to your project is the one your own city or county publishes. Below is every Arizona project where we have quoted one, verbatim, from the office's own schedule.

Project in Arizona	Jurisdictions publishing a fee
Electrical	8
Fence	8
HVAC	8
Plumbing	8
Shed	8
Deck	7
Pool	7
Solar	7
Patio	6
Roof Replacement	4

Each row links to the Arizona table carrying every quoted fee, its source and its verification date. We do not publish an Arizona average: the notes mix flat minimums, valuation percentages and per-fixture charges, so an average would be a number no office charges.

Building code in Arizona

No statewide building code; adopted locally. Counties and cities adopt their own codes, typically a version of the International Residential Code (IRC).

Administered by Local county or city building department.

Arizona has no statewide building code. Requirements are set by each jurisdiction.

Most local permit thresholds derive from this code. See our sources and standards.

What each Arizona jurisdiction publishes

One line per jurisdiction, written from its own rules rather than from a state summary. This is the section that used to be a list of links, and the states with the fewest jurisdictions to compare are the ones it says the most about.

Chandler 10 rules
1 of 10 projects always needs a permit and 9 turn on the size or scope of the work. Only solar work always needs one. Published thresholds include deck at 30 inches and fence at 7 feet.
Gilbert 10 rules
4 of 10 projects always need a permit and 6 turn on the size or scope of the work. Published thresholds include fence at 3 feet and shed at 200 sq ft.
Maricopa County 10 rules
6 of 10 projects always need a permit and 4 turn on the size or scope of the work. The ones that depend on the project are fence, patio, roof replacement and shed. Published thresholds include fence at 1 foot and shed at 200 sq ft.
Mesa 10 rules
6 of 10 projects always need a permit and 4 turn on the size or scope of the work. The ones that depend on the project are fence, patio, roof replacement and shed. Published thresholds include fence at 6 feet and shed at 200 sq ft.
Peoria 10 rules
3 of 10 projects always need a permit and 7 turn on the size or scope of the work. Only patio, pool and solar work always needs one. Published thresholds include fence at 3 feet and shed at 200 sq ft.
Phoenix 10 rules
6 of 10 projects always need a permit and 4 turn on the size or scope of the work. The ones that depend on the project are deck, fence, roof replacement and shed. Published thresholds include fence at 3 feet and shed at 200 sq ft.
Pima County 10 rules
1 of 10 projects always needs a permit and 9 turn on the size or scope of the work. Only solar work always needs one. Published thresholds include shed at 200 sq ft and deck at 30 inches.
Scottsdale 10 rules
6 of 10 projects always need a permit and 4 turn on the size or scope of the work. The ones that depend on the project are fence, patio, roof replacement and shed. Published thresholds include fence at 3 feet and shed at 200 sq ft.
Tucson 13 rules
8 of 13 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are bathroom remodel, deck, patio, pool and roof replacement. Published thresholds include patio at 3,000 sq ft and deck at 30 inches.