Garage-Conversion ADU Cost Across LA-Area Cities

Every Phase 1 LA-area city's garage-conversion adu cost page, in one place, sorted by cost-tier.

Conversion of an existing detached or attached garage to an ADU, 350–500 sqft, standard finishes.

California typical range (2026): $85,000–$185,000 standard tier across LA-area cities.

What anchors the schedule: Same state ADU permit track as detached, but foundation-reuse and electrical-service-upgrade decisions drive the cost.