ADU rules in Pasadena, CA β also called accessory dwelling unit regulations or granny flat ordinances β cover setbacks, owner-occupancy, parking, and permit requirements.
Pasadena allows ADUs under California state law (AB 68, SB 13, AB 881). Both attached and detached ADUs are permitted. The city has streamlined its permitting process to comply with state mandates.
California state law requires all cities to allow ADUs in residential zones. Pasadena permits both attached and detached ADUs. Detached ADUs may be up to 1,200 square feet. Junior ADUs (converted from existing space) up to 500 square feet are also allowed. No owner occupancy requirement for ADUs per state law. Setback minimums are 4 feet for detached ADUs. No additional parking is required if within 1/2 mile of transit. The permitting process is ministerial (no discretionary review).
Building ADUs without permits results in 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 adu rules.
See how Pasadena's adu rules rules stack up against other locations.
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