Garage conversion rules in Tacoma, WA — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Tacoma permits garage conversions to living space including ADUs. Washington State's ADU laws (HB 1337) streamline conversions. Building permits are required. No replacement parking is needed when converting a garage to an ADU.
Garage-to-ADU conversions are a popular housing option in Tacoma. A building permit is required, and the space must meet IRC habitability standards (7-foot ceilings, egress windows, insulation, ventilation). Under state ADU law, the city cannot require replacement parking when converting a garage to an ADU. The conversion must meet current energy code and electrical requirements.
Unpermitted conversions require retroactive permitting. Non-compliant spaces must be corrected to meet habitability standards.
Tacoma, WA
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Side-by-side rule comparisons with other cities in this county.
See how other cities in this county handle garage conversions.
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