Do I need a permit for shed or accessory structure in Unincorporated Maricopa County?
It depends. Whether shed or accessory structure needs a permit in Unincorporated Maricopa County comes down to the details of your project.
Small accessory structures under a size threshold are often exempt from a building permit, but the threshold and setback rules differ by jurisdiction because Arizona has no statewide code; Phoenix, Maricopa County, Tucson, and Pima County each set their own limits. A permit exemption does not waive zoning setbacks, HOA rules, or an electrical permit if the shed will be wired. A shed that will have electricity, plumbing, or a permanent foundation falls outside the usual small accessory building exemption, which generally covers simple unpowered structures only. Electrical and plumbing work each normally require their own permit and inspection even when the structure itself would have been exempt, and many jurisdictions require a licensed electrician or plumber to pull them. Zoning setbacks, height limits, and lot coverage are reviewed separately from the building permit, so confirm placement with your local department before the shed is delivered or poured. In Maricopa County, permits outside the cities are handled by the Maricopa County Planning and Development Department, reachable on 602-506-3301 at https://www.maricopa.gov/797/Planning-Development. Its online permit portal is https://www.maricopa.gov/6003/Maricopa-Countys-Permit-Center. This office serves unincorporated Maricopa County. If your address sits inside a city or town, that municipality issues the permit instead. Ask specifically about the size that triggers a permit and about setbacks, since those are set locally and are the two things people most often get wrong on a shed.
Documents you may need
- Permit applicationLikely required
- Site plan showing the structure and setbacks from property linesrequired
- Foundation/anchoring and structural details for larger shedsSometimes required
Possible inspections
- Setback/footing inspection where a foundation is required
- Final inspection
Frequently asked questions
- Do I need a permit for shed or accessory structure in Unincorporated Maricopa County?
- It depends. Whether shed or accessory structure needs a permit in Unincorporated Maricopa County comes down to the details of your project. Small accessory structures under a size threshold are often exempt from a building permit, but the threshold and setback rules differ by jurisdiction because Arizona has no statewide code; Phoenix, Maricopa County, Tucson, and Pima County each set their own limits. A permit exemption does not waive zoning setbacks, HOA rules, or an electrical permit if the shed will be wired. A shed that will have electricity, plumbing, or a permanent foundation falls outside the usual small accessory building exemption, which generally covers simple unpowered structures only. Electrical and plumbing work each normally require their own permit and inspection even when the structure itself would have been exempt, and many jurisdictions require a licensed electrician or plumber to pull them. Zoning setbacks, height limits, and lot coverage are reviewed separately from the building permit, so confirm placement with your local department before the shed is delivered or poured. In Maricopa County, permits outside the cities are handled by the Maricopa County Planning and Development Department, reachable on 602-506-3301 at https://www.maricopa.gov/797/Planning-Development. Its online permit portal is https://www.maricopa.gov/6003/Maricopa-Countys-Permit-Center. This office serves unincorporated Maricopa County. If your address sits inside a city or town, that municipality issues the permit instead. Ask specifically about the size that triggers a permit and about setbacks, since those are set locally and are the two things people most often get wrong on a shed.
- Who issues the permit in Unincorporated Maricopa County?
- The local building department for Unincorporated Maricopa County handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.