ADU Impact Fees: Peoria vs Tempe
How do adu impact fees rules compare between Peoria, AZ and Tempe, AZ?
Peoria and Tempe have similar restriction levels.
Peoria, AZ
Maricopa County
Ariz. Rev. Stat. section 9-461.18 limits the fees Peoria may charge on accessory dwelling units and expressly prohibits requiring off-site street improvements. Standard building permit and plan review fees through Peoria Development and Engineering apply, calculated on construction valuation under the City's adopted fee schedule. Water and sewer development fees may apply if the ADU triggers a new utility connection.
View full Peoria rules →Tempe, AZ
Maricopa County
Tempe does not impose a dedicated ADU impact fee. Standard building, plumbing, mechanical, and electrical permit fees through Tempe Community Development apply based on construction valuation. Water and sewer development fees apply only when a new utility connection is installed. Arizona HB 2720 (ARS 9-461.18) limits fees that would effectively prohibit ADU construction.
View full Tempe rules →Key Facts Comparison
| Fact | Peoria | Tempe |
|---|---|---|
| Dedicated ADU Impact Fee | None in Peoria | None |
| State Cap | ARS 9-461.18 limits excessive ADU fees | ARS 9-461.18 limits punitive fees |
| Street Improvement | Cannot be required (state preempted) | - |
| Permit Fee Basis | Construction valuation | Construction valuation |
| Utility Fees | Only if new connections required | Only if new meter or connection |
| Permit Authority | Peoria Development and Engineering | - |
| Fee Authority | - | ARS 9-463.05 |
Highlighted rows indicate differences between cities.
Peoria FAQ
Does Peoria charge an ADU impact fee?
Peoria does not impose a dedicated ADU impact fee. You pay standard building, plumbing, mechanical, electrical, and fuel-gas permit fees through Development and Engineering based on construction valuation. Water and sewer development fees apply only if a new meter or service connection is installed.
Can Peoria require street improvements for my ADU?
No. Arizona Revised Statutes section 9-461.18 expressly prohibits cities from requiring off-site street improvements as a condition of approving an accessory dwelling unit. Excessive fees that effectively prohibit ADU construction can be challenged under the state preemption framework.
Tempe FAQ
How much are impact fees for a Tempe ADU?
Tempe does not charge a dedicated ADU impact fee. You pay standard building, plumbing, mechanical, and electrical permit fees based on construction valuation, plus water and sewer development fees only if a new meter or service is installed. Request a written fee estimate from Tempe Community Development before submittal.
Can Tempe charge me the full single-family impact fee for an ADU?
No. Under ARS 9-461.18 (HB 2720), fees that would effectively prohibit ADU construction are barred. Tempe applies its standard transportation, parks, and public safety impact fees to new principal-unit construction, not as a duplicate charge on accessory dwelling units sharing the existing lot.
Compare other topics
See how Peoria and Tempe compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool