ADU Impact Fees: Mesa vs Peoria
How do adu impact fees rules compare between Mesa, AZ and Peoria, AZ?
Mesa and Peoria have similar restriction levels.
Mesa, AZ
Maricopa County
Mesa charges development impact fees under Arizona Revised Statutes Section 9-463.05 for water, wastewater, parks, and public safety. HB 2720 requires that ADU impact fees be proportional to the ADU's service demand, not the full single-family rate. Mesa Utilities capacity fees apply when a new water meter is installed for an ADU.
View full Mesa rules →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 →Key Facts Comparison
| Fact | Mesa | Peoria |
|---|---|---|
| Fee Authority | ARS §9-463.05 | - |
| HB 2720 | Proportional ADU fees required | - |
| Water Meter | Capacity fee if new meter | - |
| Permit Fee | $500-$2,000 typical | - |
| Dedicated ADU Impact Fee | - | None in Peoria |
| State Cap | - | ARS 9-461.18 limits excessive ADU fees |
| Street Improvement | - | Cannot be required (state preempted) |
| Permit Fee Basis | - | Construction valuation |
| Utility Fees | - | Only if new connections required |
| Permit Authority | - | Peoria Development and Engineering |
Highlighted rows indicate differences between cities.
Mesa FAQ
How much are impact fees for a Mesa ADU?
Mesa impact fees vary by area and ADU size. Under HB 2720, fees must be proportional to the ADU's service demand, not the full single-family rate. Request a fee estimate from Mesa Development Services before submitting permits.
Do I need a separate water meter for my Mesa ADU?
Not required. Sharing the primary dwelling's water meter avoids Mesa Utilities capacity fees. A separate meter is optional but triggers a new meter installation fee plus capacity charges. Most homeowners share the meter unless they plan to rent the ADU separately.
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.
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