ADU Impact Fees: Chandler vs Glendale
How do adu impact fees rules compare between Chandler, AZ and Glendale, AZ?
Chandler has fewer restrictions than Glendale.
Chandler, AZ
Maricopa County
Chandler does not impose dedicated ADU impact fees. Ariz. Rev. Stat. section 9-461.18 limits the fees cities may charge on accessory dwelling units to ensure compliance with the state by-right mandate. Standard building permit and plan review fees through Chandler Development Services apply, calculated on construction valuation. Water and sewer development fees may apply only when new utility connections are installed.
View full Chandler rules →Glendale, AZ
Maricopa County
Ariz. Rev. Stat. section 9-461.18 prohibits Glendale from imposing street impact fees on accessory dwelling units and limits other fees that could undermine the state by-right mandate. Standard building permit and plan review fees apply, scaled to construction valuation. Water and sewer development fees apply because Glendale requires a separate water meter and tap for every ADU, generating new connection charges that ordinary internal conversions in other cities avoid.
View full Glendale rules →Key Facts Comparison
| Fact | Chandler | Glendale |
|---|---|---|
| Dedicated ADU Impact Fee | None in Chandler | - |
| State Cap | ARS 9-461.18 limits excessive ADU fees | ARS 9-461.18 limits excessive ADU fees |
| Permit Fee Basis | Construction valuation | Construction valuation |
| Utility Fees | Only if new connections required | - |
| Transportation Impact Fee | Not applied to ADUs | - |
| Park Impact Fee | Not applied to ADUs | - |
| Street Impact Fee | - | Not applied (state preempted) |
| Water Meter Fee | - | Required (separate meter per ADU) |
| Water Tap | - | New tap to main required |
| Reference Document | - | Glendale ADU Update Mar 2025 |
Highlighted rows indicate differences between cities.
Chandler FAQ
Does Chandler charge an ADU impact fee?
No. Chandler does not impose a dedicated ADU impact fee. You pay standard building, plumbing, mechanical, and electrical permit fees through Development Services based on construction valuation. Water and sewer development fees apply only if a new meter or service connection is installed.
Can Chandler impose excessive ADU fees?
No. Arizona Revised Statutes section 9-461.18 limits the fees Chandler 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.
Glendale FAQ
Does Glendale charge an ADU impact fee?
Streets impact fees do not apply to ADUs because state law (Ariz. Rev. Stat. 9-461.18) prohibits requiring street improvements. Glendale does charge standard building permit fees scaled to construction valuation, and unlike many cities, requires a separate water meter and new tap for every ADU, which generates meter and connection fees.
Why is Glendale's ADU water fee higher than other Arizona cities?
Glendale uniquely requires every ADU to have its own city water meter with a new tap to the water main in the street or right-of-way. Most Arizona cities permit ADUs to share the primary dwelling's meter and service, avoiding new connection fees. Plan for separate water meter and tap charges in your Glendale ADU budget.
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