Garage conversion rules in Santa Rosa, CA — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Santa Rosa supports garage conversions to ADUs under California ADU law. Converting a garage to living space requires a building permit but parking replacement is not required under state law.
Converting a garage to an ADU or JADU is supported under California Government Code §65852.2 and Santa Rosa's zoning code. A building permit is required to ensure the conversion meets Building Code standards for habitable space including insulation, ventilation, egress windows, and fire separation. The city cannot require replacement of lost garage parking under state ADU law. Garage conversions within the existing footprint have streamlined approval. New electrical, plumbing, and HVAC systems require separate permits.
Unpermitted garage conversions may be cited by code enforcement. The city encourages retroactive permitting rather than demolition.
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See how Santa Rosa's garage conversions rules stack up against other locations.
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