What's Required in Phoenix
- No permit required for detached storage sheds 200 square feet or less.
- Shed must not exceed 8 feet in height if located within 10 feet of a side or rear property line.
- Must be located in the rear yard and maintain 3-foot minimum setbacks from the primary house.
- Any shed with electrical wiring, plumbing, or gas requires a permit regardless of size.
- If over 200 sq ft, the structure must be anchored to a foundation per IBC/IRC standards.
- A maximum of two detached accessory structures are allowed per single-family lot.
What Size Shed Needs a Permit in Phoenix
Whether you need a building permit for a shed in Phoenix usually comes down to size. In Phoenix, the cutoff is clear: detached sheds of 200 square feet or less don’t need a building permit, while anything larger does. A popular 10x12 shed (120 sq ft) comes in under the limit, so it typically doesn’t need a building permit. Larger sheds, and any shed with electrical, plumbing, or a permanent foundation, almost always need a permit regardless of footprint.
Building a Shed Without a Permit in Phoenix
Even when a shed is small enough to skip a building permit in Phoenix, “no permit” doesn’t mean “no rules.” A permit-exempt shed generally must stay at or under the 200-square-foot limit, sit on a non-permanent base (sheds on skids or a gravel pad are treated more leniently than those on a poured foundation), and have no electrical or plumbing run to it. Crucially, zoning setbacks still apply — your shed usually has to sit a minimum distance from property lines and other structures, and that holds even for a permit-free shed. Confirm both the size exemption and the setback distance with the City of Phoenix Planning and Development Department before you build.
How to Get a Shed Permit in Phoenix
Step 1: Size Verification
Measure the footprint to see if the 200 sq ft exemption applies.
Step 2: Check Zoning Overlays
Verify if your lot is in a Historic District which removes the exemption.
Step 3: Portal Submission
Apply online for an 'Accessory Structure' permit if over size limits.
Step 4: Fee Payment
Pay the valuation-based permit and plan check fees ($125 minimum).
Step 5: Inspection
Schedule a final structural inspection once the shed is anchored.