Garage conversion rules in Pasadena, CA — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions to ADUs in Pasadena are streamlined under California law. Converting existing garage space to living quarters does not require replacement parking. Building permits are required.
California law encourages garage-to-ADU conversions by waiving replacement parking requirements. Converting a garage to a junior ADU (up to 500 sq ft) or full ADU requires a building permit. The space must meet California Building Code standards for habitable space including egress, insulation, electrical, HVAC, and fire safety. Setback nonconformities in existing garages are grandfathered for conversions. The permitting process is ministerial.
Unpermitted conversions face building code violations and required permitting before occupancy.
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle garage conversions.
See how Pasadena's garage conversions rules stack up against other locations.
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