ADU Cost in Los Angeles. Get Your Itemized Breakdown.
Get My ADU Cost Breakdown
Get My ADU Cost Breakdown
What Does Your ADU Cost? It Depends on 5 Things.
No two lots in Los Angeles cost the same to build on, so we don't publish a one-size price list. Fill out the form and your builder prepares an itemized cost breakdown for your property, with every cost on its own line.
Size and layout
A 500 sq ft studio, a 750 sq ft one bedroom, a 1,000 sq ft two bedroom and a 1,200 sq ft unit are each priced differently.
ADU type
A detached backyard ADU, an attached ADU, a garage conversion or a JADU inside your home.
Your lot and site work
Access for crews, slope, soil and how far utilities have to run.
Plans and permits
Architectural plans, plan check and city permit fees.
Utilities and finishes
Water, sewer and electrical connections, plus the finish level you choose.
How much does a 500 sq ft ADU cost in Los Angeles?
It depends on your lot, the ADU type and your finishes. Fill out the form and we'll prepare an itemized cost breakdown for a 500 sq ft ADU on your property.
How much does a 2 bedroom ADU cost?
The price of a 2 bedroom ADU depends on its size, your lot and your finishes. Fill out the form to get an itemized cost breakdown for your project.
Is there an ADU cost calculator?
Online calculators can't see your lot, your utilities or your city's permit fees. Your free on-site assessment gives you an itemized breakdown for your actual property.
Every breakdown is itemized: hard costs, permit fees and utilities on separate lines, never one bundled number.
Google
Houzz
Angi
HomeAdvisor
Thumbtack
CSLB
BuildZoom
How We Build Your ADU
1Free On-Site Assessment
The representative walks your lot with you and explains your options.
2Plans and Permits
We draw the plans and handle every city permit.
3Construction
One crew builds it, start to finish.
4Final Inspection and Keys
City sign-off, keys in hand.
One Crew, Start to Finish
The same IBA team that quotes your project builds it - no handoffs, no strangers on your property.
The IBA Builders team
Project leadership
Build crew
Office and design teamItamar Ben Asulin - Owner and General Contractor
We handle everything - design, permits, build and inspections. Itamar walks every property himself before any design money is spent.
Talk to the team
(747) 298-5406See What We Build
Real IBA projects across Los Angeles.
Rated 4.9 Stars by LA Homeowners
Google4.956 reviewsHouzz4.979 reviews
Yelp4.325 reviews
We worked with IBA and Ben converting our garage into an ADU unit. Ben was very detailed explaining the plans and permit process and offered a 3D rendering to visualize what the work will look like. It took a couple of months to get the permits and about 3 months of construction. It came out very nice and we're very happy with the process and the results.
Artur T.
Posted on Yelp September 2024
IBA Builders managed our ADU project very well. Ben and the team handled the planning, addition work, kitchen details, and bathroom updates with regular communication, which made the project feel much easier.
EDWIN ALEX
Posted on Google May 2026
Elena and Shani made our project with IBA Builders feel well-managed and clear from the beginning. They helped guide the ADU project, additions, kitchen, and bathroom work with smart planning and consistent updates. The crew was respectful, clean, and focused on quality finishes. Everything came together beautifully, and the final result feels more spacious, modern, and comfortable for our family.
Alex Skyler
Posted on Google July 2026We worked with IBA and Ben converting our garage into an ADU unit. Ben was very detailed explaining the plans and permit process and offered a 3D rendering to visualize what the work will look like. It took a couple of months to get the permits and about 3 months of construction. It came out very nice and we're very happy with the process and the results.
Artur T.
Posted on Yelp September 2024IBA Builders managed our ADU project very well. Ben and the team handled the planning, addition work, kitchen details, and bathroom updates with regular communication, which made the project feel much easier.
EDWIN ALEX
Posted on Google May 2026Elena and Shani made our project with IBA Builders feel well-managed and clear from the beginning. They helped guide the ADU project, additions, kitchen, and bathroom work with smart planning and consistent updates. The crew was respectful, clean, and focused on quality finishes. Everything came together beautifully, and the final result feels more spacious, modern, and comfortable for our family.
Alex Skyler
Posted on Google July 2026Shani and Shon were great to work with throughout our ADU project and home additions. The IBA Builders team kept everything organized, explained each step clearly, and delivered high-quality work. Our kitchen and bathroom remodels came out clean, modern, and very functional. Their attention to detail, smooth communication, and reliable project management made the whole experience easy. Highly recommend them for construction work in California.
Billy Aaron
Posted on Google June 2026We had a fantastic experience with IBA Builders. Ben and Shani were incredibly professional, while Shon kept us updated throughout the project. Our ADU project, kitchen, bathroom, and home addition were completed with exceptional craftsmanship and attention to detail. The team stayed on schedule, communicated clearly, and exceeded our expectations. We highly recommend IBA Builders for anyone looking for reliable, high-quality construction services.
Alex Spencer
Posted on Google June 2026Planning an ADU felt confusing at first because there were so many decisions around layout, additions, kitchen space, and bathroom placement. Ben took the time to explain the process and helped us understand what would work best for the property. The team stayed organized and paid attention to the way the space would actually be used. The kitchen and bathroom were planned well, and the finished ADU feels comfortable, practical, and complete. IBA Builders made a large project feel much easier to manage.
LUIS MIGUEL
Posted on Google June 2026Where We Build in LA County
Completed projects across the Valley and beyond - serving every city in LA County.
Locations shown at neighborhood level
Built for Your Budget and Your Timeline
Lowest prices in Los Angeles and surroundings
A legal rental unit inside your home.
One contract. Permits included.
Highest ValueBuild 800+ sq ft, plans are on us.
What Does an ADU Cost in Los Angeles?
Every assessment is itemized - hard costs, permit fees and utilities on separate lines, never one bundled number.
Not a shed. A real permitted build.
Watch a backyard ADU come apart layer by layer, then go back together in the order it actually gets built.
Energy efficient. Built to last.
A continuous air barrier around the whole envelope, insulation in every cavity, and a building that keeps the air you paid to heat and cool.
Everything in Your ADU - Move In Ready
From framing to faucets, our team handles it all. Here is everything that comes with the ADU we build for you:
FAQs
A CSLB license - issued by the California Contractors State License Board - is the state credential that authorizes a contractor to legally perform construction work in California. It is required for any residential project valued over $500. IBA Builders holds License #1074505. To verify it yourself, visit cslb.ca.gov, enter the license number, and confirm the status, classification, and bond information directly.
Still have questions? Call
(747) 298-5406Get Your Free On-Site Assessment
Takes under a minute. The representative walks your lot with you and explains your options.