Garage conversion rules in Gilbert, AZ — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions to ADUs are permitted under HB 2720 with a building permit. Converted spaces must meet residential building codes. Gilbert previously required compatible design, which HB 2720 eliminated.
Garage conversions to ADUs are permitted in Gilbert under HB 2720 with a building permit from Development Services. Converted garages must meet residential building code requirements for habitable space including insulation, ventilation, egress, electrical, plumbing, and HVAC. The conversion must comply with the 1,000 sq ft or 75% size limitation. HB 2720 eliminated Gilbert's previous requirement that ADUs have compatible design in materials, colors, and architectural style with the main dwelling. Cities also cannot mandate additional parking for ADU conversions. Gilbert adopted Ordinance No. 2961 updating the definition of habitable space, which applies to garage conversions. HOA CC&Rs may still restrict garage conversions in master-planned communities, as state law does not override private covenants.
Conversion without permit: stop-work order. Non-compliant habitable space: building code violation. HOAs may impose separate enforcement.
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Side-by-side rule comparisons with other cities in Maricopa County.
See how other cities in Maricopa County handle garage conversions.
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