Permitted, built, and inspected under one contract. We manage LADBS submission, plan check response, and every inspection phase from first site visit to Certificate of Occupancy.
CSLB License #1074505
Itamar Ben Asulin on every project
Valley · Westside · South Bay
An ADU contractor in Los Angeles should handle the full project — not just the construction.
An accessory dwelling unit (ADU) is a fully independent living space on the same lot as a primary home. It has its own entrance, kitchen, and bathroom. California law allows one or more ADUs on most residential lots — but the actual build still goes through the Los Angeles Department of Building and Safety (LADBS).
IBA Builders manages the complete ADU project: design coordination, LADBS permit submission, construction, and all inspection phases under one contract, with one licensed team. No separate permit expediter. No handoff to a subcontracted general contractor. We handle everything from detached ADU construction to garage conversions and attached units, including building a backyard ADU. Our ADU permitting services cover the full range of jurisdictions, and we also handle ADU construction on multi-family lots under California’s expanded ADU rights.
The Owner is involved at every stage, from the first site assessment through final LADBS sign-off. For a full picture, see our breakdown of ADU construction costs in Los Angeles before committing to a scope.
One engagement covers design coordination through final inspection — no separate vendors to manage.
We prepare and submit complete packages — architectural plans, site documents, and Title 24 energy compliance — the way LADBS expects them.
When LADBS issues a correction notice, we respond within the required window so your application stays on track.
We work with the design team to produce plans that reflect your actual lot — setbacks, utilities, and buildable envelope mapped first.
Framing, MEP rough-in, insulation, drywall, and finish work — sequenced to pass each required inspection in order.
Every new dwelling unit in California requires a Title 24 energy compliance report. We include it in the permit package from day one.
Connection requests filed during the permit phase — not after — so utility timelines run alongside construction, not after it.
We map the buildable envelope, verify California’s 4-foot setback requirements, and identify utility lateral routing before any design begins.
Plan-set development followed by a complete LADBS submission — architectural plans, site documents, and Title 24 energy compliance report.
Framing, MEP rough-in, insulation, drywall, and finish work sequenced to pass each required LADBS inspection in order.
LADBS final sign-off plus LADWP connection completion — ending with the Certificate of Occupancy in hand.
Our crews work the full county service area — San Fernando Valley, Westside, South Bay, Eastside, and the foothill cities. That range is built on jurisdiction experience: LADBS, LA County Public Works, and the independent building departments of Burbank, Glendale, Pasadena, Culver City, and Santa Monica. Crews dispatch from 13743 Ventura Blvd, Suite 360, Sherman Oaks, CA 91423.
Most LA homeowners don’t realize an ADU is a 6–18 month permitted construction project. One company quotes the design. Another handles permits. A third does the actual build. Nobody coordinates the three — and the homeowner ends up managing the gaps.
“I’ve talked to dozens of homeowners who started by asking one question: ‘Can I build an ADU in my backyard?’ By the time they called us, they’d already spent weeks trying to piece together what the project actually involves.”
— ITAMAR ASSULIN, OWNER, IBA BUILDERS
IBA Builders was built to solve that coordination problem. One engagement covers everything — design, LADBS plan check, correction responses, construction, and every required inspection. Itamar reviews each phase personally; learn more about Itamar and IBA Builders. We hold an active California state contractor license, which you can verify directly through the CSLB before signing any contract. Before you start, our guide to LA zoning rules for R1, R2, and multi-family lots explains how lot type affects your ADU eligibility.
Most ADU projects in Los Angeles take 6–18 months from initial site visit to Certificate of Occupancy. Design and permit submission typically consume 3–6 months. Construction runs 3–6 months after the permit is issued. LADWP utility connection and final inspection add time at the end. Projects with complete permit packages and no correction delays land closer to the 6-month end of that range.
One contract covers design coordination, LADBS permit submission, correction responses, construction, and all required inspections. No separate permit expediter is needed. No handoff to a subcontracted general contractor occurs. Itamar Ben Asulin oversees every phase directly. You have one point of contact from site visit through final sign-off.
ADU construction costs in Los Angeles vary by project type, lot conditions, and what the quote includes. Garage conversions typically cost less than new detached builds. Soft costs — architectural plans, soils reports, LADBS fees, and Title 24 compliance — often add $15,000–$40,000 before construction begins. Two quotes that look far apart are usually quoting different scopes. Ask each contractor whether permits, soft costs, and utility connections are included.
Yes — the site assessment is the first step, and it happens before any design work begins. IBA measures the buildable envelope on your specific property. That assessment covers setbacks, utility locations, easements, and existing structures. You do not need to arrive with lot dimensions or a site plan. The assessment produces that information.
Correction notices are written lists of errors or missing items in submitted plans. IBA responds to every correction within the required window. Letting that window lapse sends the application back to the general queue, adding weeks. Responding promptly keeps the project on track. Most Los Angeles ADU projects go through at least one correction cycle — it is a normal part of the process, not a sign the project is in trouble. For more on this, see our explainer on why LA ADU permits take longer than expected.
Yes, each ADU type follows a different submittal path. A detached ADU requires a standalone structural package including foundation design. An attached ADU must address shared wall assemblies and fire separation requirements tied to the existing home. A garage conversion triggers separate review of the existing structure’s compliance with current code. IBA prepares each package to the requirements of the specific project type — not a generic template.
You don’t need a finalized project plan to reach out. Call IBA Builders or email in**@*********rs.com to schedule your site visit.