ADU Cost Calculator for Los Angeles Homeowners
Get a free preliminary estimate for your Accessory Dwelling Unit project in seconds — garage conversion, detached ADU, or room addition. No obligation, no signup required.
Estimate Your ADU Project Cost in Los Angeles
Los Angeles County homeowners can use this calculator to get an instant ballpark estimate based on your project type, size, and scope of work. Select your services, enter your details, and our team will follow up with a free site visit to confirm final pricing.
How Much Does an ADU Cost in Los Angeles?
ADU construction costs in Los Angeles typically range from $50,000 for a basic garage conversion to $250,000+ for a fully custom detached unit, depending on size, finishes, and the scope of permits and engineering required.
The most affordable option is a garage conversion (also called a garage ADU), which repurposes existing square footage and typically requires less structural work. A detached ADU or room addition involves new construction and carries higher costs but offers more flexibility in layout, size, and rental income potential.
At KobzevPro, we handle the full process — from permit filing and engineering coordination to construction and final inspection — so you work with one team from start to finish. We serve homeowners throughout Los Angeles County, including the San Fernando Valley, Burbank, Glendale, Pasadena, and surrounding areas.
Use the calculator above to get a preliminary estimate, then schedule a free site visit to get exact numbers for your property.