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.
Arizona's HB 2720 (Ariz. Rev. Stat. section 9-461.18) restricts municipalities from imposing fees on ADUs that would effectively prohibit their construction or that exceed the actual cost of services provided. Chandler does not levy a separate ADU impact fee. Applicants pay standard building, plumbing, mechanical, and electrical permit fees through Chandler Development Services, scaled to construction valuation under the City's adopted fee schedule. Chandler Water Resources may assess water and sewer development fees if the ADU triggers a new meter or service connection; sharing the primary dwelling's existing service typically avoids those charges. The state preemption framework allows ADU applicants to challenge fees that appear excessive or punitive. Chandler's adopted impact fees for transportation, parks, and public safety apply only to new principal-unit construction, not to accessory dwelling units sharing the existing lot.
Failure to pay required permit and connection fees blocks issuance of building permits and prevents lawful construction. Excessive fees that violate Ariz. Rev. Stat. section 9-461.18 may be challenged through administrative appeal or court action under the state preemption framework. Unpermitted utility tap-ins discovered later can result in disconnection, back-billing, and code enforcement.
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