Phoenix ADU Permit Fees & Cost Calculator
Phoenix’s official ADU page confirms that residents can use no-cost approved standard plans, but a site plan is still required for permitting. Publicly available official sources in the search results do not show a clear ADU-specific fee schedule, so permit and any impact-fee amounts should be verified directly with the City of Phoenix fee schedule and permit counter.
Free ADU fee calculator
Estimate local ADU fees
Step 1 of 5: Location
The calculator uses staged city data from the ADUFee database with visible confidence levels and dated source tracking.
Fee overview
Do not treat third-party permit-cost estimates as official Phoenix fees.
The city’s ADU page in the search results does not publish a complete ADU fee schedule, so all fee amounts should be verified directly with Phoenix Planning & Development and the current city fee ordinance.
No California ADU impact-fee baseline applies because Phoenix is in Arizona, not California.
Phoenix ADU fees are being evaluated for a typical detached or attached residential ADU rather than a conversion with a different permit pathway.
The official fee schedule was not available in the provided search results, so exact numeric fee values are intentionally left null.
Utility fees may vary by provider and by whether the ADU requires a new meter or service upgrade.
FAQs
Are Phoenix ADU fee estimates official?
No. ADUFee.com provides planning estimates only. Final fees are set by the city, utility providers, school district, and other agencies.
What sources are used for Phoenix?
The database stores city, state, utility, school, county, and other source links where available. Each estimate should still be verified locally.
Can ADU fees vary within Arizona?
Yes. Permit, utility, school, inspection, and impact fees can vary by jurisdiction, parcel, project size, utility provider, and local interpretation.