Los Angeles, California
LA is one of the most ADU-friendly cities in the country — most single-family and multi-family lots qualify under California state law, and the city publishes pre-approved standard plans that cut design and review time.
$180K–$260K
All-in build cost
construction, design, permits & fees
$2,400–$2,900
Monthly rent
one-bed comps nearby
2–4 mo
Permit timeline
typical city review window
up to 1,200 sq ft
Typical max size
detached new construction
Estimates from regional cost and rental data — not a quote or a permit decision.
For Los Angeles ADU builders
Every homeowner searching "ADU cost in Los Angeles" ends up on a page like this. Our early-access widget will give them the answer for their exact address on your site — and send you the lead. Founding builders get it first.
FAQ
Most detached ADU projects in Los Angeles land between $180,000 and $260,000 all-in — construction, design, permits and fees. Garage conversions come in lower; high-end finishes and difficult lots push higher. These are estimates from regional cost data, not a quote.
Local comps put a new one-bedroom ADU in Los Angeles at roughly $2,400–$2,900 per month, depending on neighborhood, size and finish.
Permit review in Los Angeles typically runs 2–4 months, faster with LA's pre-approved standard plans, plus design time before you submit. California's 60-day review clock applies to each complete submission — correction rounds are what stretch the calendar in practice.
LA is one of the most ADU-friendly cities in the country — most single-family and multi-family lots qualify under California state law, and the city publishes pre-approved standard plans that cut design and review time. The fastest way to find out for a specific address is a feasibility check against the city's zoning data — that's exactly what our early-access widget will do on builders' websites.