Detached ADU Cost Across LA-Area Cities

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

Newly built detached accessory dwelling unit, 1,000–1,200 sqft, single-story, standard finishes.

California typical range (2026): $170,000–$285,000 standard tier across LA-area cities (premium adds 25–35%).

What anchors the schedule: California's 60-day ADU mandate sets the schedule floor; city overlays (hillside, fire severity, historic, coastal) move the ceiling.

Detached ADU cost, Detached ADU cost Los Angeles, Detached ADU cost California, Detached ADU permit, TRUbee project hub, construction cost comparison.