ADU Impact Fees: Peoria vs Scottsdale
How do adu impact fees rules compare between Peoria, AZ and Scottsdale, AZ?
Peoria and Scottsdale 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 →Scottsdale, AZ
Maricopa County
Scottsdale does not impose a dedicated ADU impact fee. Ariz. Rev. Stat. Sec. 9-461.18 limits the fees Scottsdale may charge on accessory dwelling units, preventing fees that would effectively prohibit ADU construction. Standard building permit and plan-review fees through Planning & Development Services apply, calculated on construction valuation. Water and sewer development fees may apply only when new utility connections are installed.
View full Scottsdale rules →Key Facts Comparison
| Fact | Peoria | Scottsdale |
|---|---|---|
| Dedicated ADU Impact Fee | None in Peoria | None in Scottsdale |
| State Cap | ARS 9-461.18 limits excessive ADU fees | ARS 9-461.18 limits excessive ADU 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 connections required |
| Permit Authority | Peoria Development and Engineering | - |
| Transportation Impact Fee | - | Not applied or reduced for ADUs |
| Reassessment | - | Maricopa County Assessor |
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.
Scottsdale FAQ
Does Scottsdale charge an ADU impact fee?
No. Scottsdale does not impose a dedicated ADU impact fee. You pay standard building, plumbing, mechanical, and electrical permit fees through Planning & Development Services based on construction valuation. Water and sewer development fees apply only if a new meter or service connection is installed.
Can Scottsdale impose excessive ADU fees?
No. Arizona Revised Statutes Sec. 9-461.18 limits the fees Scottsdale may impose on accessory dwelling units to prevent the state by-right mandate from being undermined. Fees must reasonably reflect the actual cost of services provided and cannot effectively prohibit ADU construction.
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