Garage conversion rules in Lakewood, WA — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions to habitable space in Lakewood require a building permit and must meet residential code standards. Conversion to an ADU is permitted under LMC 18A.40.110 and HB 1337 provisions.
Converting an attached or detached garage to living space in Lakewood's city limits requires a building permit and must meet habitable room standards. Conversions must include proper egress windows, insulation to current energy code, minimum ceiling height (7 feet 6 inches), electrical upgrades, and HVAC. If the garage provided required off-street parking, the property owner may need to demonstrate alternative parking (driveway, carport) or obtain a parking variance. Garage conversions to ADUs have additional requirements including kitchen, bathroom, and separate entrance. The conversion must comply with the property's zoning district setback and lot coverage limits.
Unpermitted garage conversions face fines of $500–$2,000, mandatory permit acquisition (double fees), and may need to be restored to garage use if code requirements cannot be met.
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