Best ADU Builders in Los Angeles (2026)

Los Angeles processes more ADU permits than any other city in California. That volume means more builders to choose from — and more variation in quality, experience, and licensing. Not every contractor advertising ADU services in LA has actually completed one. The best ADU builders in Los Angeles share a few verifiable traits: active CSLB license, bond on file, workers’ comp current, clean complaint history, and a track record of permitted ADU projects. This list includes only builders who passed independent CSLB verification before appearing on the page.

ADU projects in LA typically cost $100,000 to $450,000. That’s a significant financial commitment, and the consequences of hiring the wrong contractor are severe.

In recent years, California has seen multiple high-profile cases of ADU fraud. Anchored Tiny Homes collected deposits from over 160 homeowners and vanished. Nonna Homes had its CSLB license suspended after dozens of complaints. These aren’t isolated incidents — CSLB logs hundreds of ADU-related complaints every year, and Los Angeles accounts for a disproportionate share.

The minimum you should verify before hiring any ADU builder:

• Active CSLB license with a B (General Building) classification
• Contractor bond on file — required by California law, provides financial protection
• Workers’ compensation insurance — protects you from liability if a worker is injured on your property
• Clean complaint history — no unresolved CSLB complaints or disciplinary actions
• General liability insurance — protects against property damage during construction

Every builder listed below meets all of these standards. You can verify any contractor’s license independently at cslb.ca.gov.

This is not a paid list. Builders cannot pay to be featured. Our selection criteria:

• CSLB verification passed — active license, bond, workers’ comp, clean record
• ADU-specific experience — the builder explicitly offers ADU services, not just general remodeling
• Google reviews with ADU mentions — real homeowners describing real ADU projects
• Established business — not a company that appeared last month
• Los Angeles service area — physically located in or actively serving LA County

Builders are listed in no particular order. We don’t rank them — that’s a decision only you can make based on your project scope, budget, and location within LA.

Backyard Estates

CSLB #1076065 · Active · Los Angeles · 4.9★ (23 reviews)

Backyard Estates is one of LA’s ADU-focused builders, specializing exclusively in accessory dwelling units rather than general remodeling. Their model covers the full process from feasibility assessment through permitting and construction. They handle detached ADUs, garage conversions, and attached units across Los Angeles County.

Their Google reviews consistently reference smooth permitting coordination and transparent pricing — two areas where LA ADU projects commonly go sideways. The company works primarily in the San Fernando Valley, Westside, and central LA neighborhoods.

View Backyard Estates profile

Go ADU Construction

CSLB #1076712 · Active · Los Angeles · 4.9★ (27 reviews)

Go ADU is a family-owned Los Angeles contractor that focuses on ADU design-build. They offer both custom site-built ADUs and pre-approved standard plans through LADBS, which can reduce permitting time significantly. Their service area covers most of LA County.

Multiple reviewers on Google describe their ADU projects as coming in on budget and on schedule — a claim that’s worth verifying with references, but notable in a market where overruns are common. The company handles detached ADUs, garage conversions, and JADUs.

View Go ADU Construction profile

NEO Builders ADU

CSLB #1114778 · Active · Los Angeles · 4.9★ (136 reviews)

NEO Builders has one of the highest review counts among LA ADU builders, with 136 Google reviews and a 4.9-star rating. They offer design-build ADU services including detached units, garage conversions, and modular ADU installation throughout Los Angeles and surrounding cities.

Their ADU-specific reviews highlight project management, communication during the build, and LADBS permit navigation. With a large volume of completed projects, they have established relationships with LADBS plan checkers — which can matter when your application hits a review cycle.

View NEO Builders ADU profile

Otto ADU

CSLB #1081287 · Active · Los Angeles · 4.9★ (11 reviews)

Otto ADU operates as a full-service ADU design-build firm in Los Angeles. They handle everything from initial site evaluation and architectural design through permitting and construction. The company offers both custom and pre-designed floor plans.

What stands out in their reviews is responsiveness during the design phase — multiple homeowners note fast turnaround on plan revisions and proactive communication about permit status. They primarily serve central and west LA.

View Otto ADU profile

Quality First Builders

CSLB #990316 · Active · Los Angeles · 5.0★ (80 reviews)

Quality First Builders holds a perfect 5.0 Google rating across 80 reviews — an unusual score at that volume. Based in Los Angeles, they handle ADU construction, home additions, and remodeling projects. Their ADU work includes detached backyard units, garage conversions, and second-story additions over existing structures.

Their reviews frequently mention attention to finish quality and job site cleanliness. For homeowners who want a premium finish on their ADU, this is a builder worth getting a bid from.

View Quality First Builders profile

AP Remodeling Inc

CSLB #1049032 · Active · Los Angeles · 4.9★ (140 reviews)

AP Remodeling has the highest review count among LA builders in our directory at 140 Google reviews with a 4.9-star rating. They offer ADU construction alongside kitchen and bathroom remodeling, room additions, and full home renovations across Los Angeles County.

Their breadth of experience in general remodeling gives them a practical advantage on attached ADUs and garage conversions where the work integrates with the existing home. Reviews reference their ability to handle complex structural modifications that pure ADU companies may not have experience with.

View AP Remodeling Inc profile

LA Family Builders

CSLB #1120579 · Active · Los Angeles · 4.8★ (101 reviews)

LA Family Builders is a family-owned contractor serving the greater Los Angeles area. They specialize in ADU construction, garage conversions, and home additions. With 101 reviews and a 4.8-star rating, they have a solid track record across a high volume of projects.

Reviewers consistently mention fair pricing and reliable scheduling. The company provides free initial consultations and project estimates, which is standard in the market but worth confirming when you reach out.

View LA Family Builders profile

This is not a complete list. View all 33 verified LA builders in our full Los Angeles ADU directory.

Los Angeles dominates California’s ADU market by volume. Key numbers:

• 25,000+ ADU permits issued since 2017 — more than any other U.S. city
• ADU construction costs: $100,000 (garage conversion) to $450,000+ (large detached)
• Average detached ADU cost: $250,000 to $300,000 for 500 sq ft
• Permit timeline: 8 to 16 weeks through LADBS
• Monthly rental income: $1,400 to $3,200 depending on size and location

The San Fernando Valley (Woodland Hills, Sherman Oaks, Encino) accounts for the highest concentration of ADU permits in the city, driven by larger lot sizes and strong rental demand. For a detailed cost breakdown by ADU type, see our ADU Cost in Los Angeles — 2026 Guide.

Beyond CSLB verification, here’s what to evaluate when choosing an LA ADU builder:

1. Get 3 to 5 bids. LA’s ADU market has wide pricing variation. The lowest bid is rarely the best — be suspicious of any quote more than 30% below the others. But paying the highest price doesn’t guarantee quality either. Compare scope of work, not just bottom-line numbers.

2. Ask for ADU-specific references. General remodeling experience is not the same as ADU experience. Ask to speak with homeowners who had ADUs built — not just kitchen remodels. The permitting, utility connections, and site work are fundamentally different.

3. Confirm LADBS experience. LADBS has specific requirements and review processes that differ from other California jurisdictions. Ask the builder how many LADBS ADU permits they’ve pulled in the last 12 months. If the answer is zero, they’ll be learning the process on your project.

4. Get a fixed-price contract. Avoid cost-plus contracts for ADU construction. A fixed-price contract protects you from change order creep — the most common way LA ADU budgets spiral out of control.

5. Verify insurance independently. Don’t take the contractor’s word for it. Ask for a certificate of insurance and call the insurance company to confirm it’s current. Workers’ comp is verified through CSLB, but general liability insurance must be confirmed separately.

6. Check the CalHFA grant. Before you sign a construction contract, check if you qualify for the $40,000 CalHFA ADU grant. It covers pre-development costs and can save you thousands. Read our CalHFA grant guide for eligibility details.

Who are the best ADU builders in Los Angeles?

The best ADU builders in Los Angeles include Backyard Estates, Go ADU Construction, NEO Builders ADU, Otto ADU, Quality First Builders, AP Remodeling, and LA Family Builders. All hold active CSLB licenses with bond and workers’ comp confirmed. See our full verified LA builder directory for all 33 listings.

How do I verify an ADU builder’s license in Los Angeles?

Check the contractor’s CSLB license number at cslb.ca.gov. Confirm the license is active, the classification includes B (General Building), a contractor bond is on file, and workers’ compensation insurance is current. VerifiedADU checks all of these automatically for every listed builder.

How much does an ADU cost in Los Angeles?

ADU costs in LA range from $100,000 for a garage conversion to $450,000+ for a large detached unit. The average 500 sq ft detached ADU costs $250,000 to $300,000. See our ADU Cost in Los Angeles guide for detailed breakdowns by type.

How long does it take to build an ADU in Los Angeles?

From permit submission to completion, most LA ADU projects take 10 to 18 months. LADBS permitting takes 8 to 16 weeks. Construction takes 5 to 10 months for site-built units or 3 to 4 months for prefab after delivery.

Do I need a licensed contractor to build an ADU in Los Angeles?

Yes. California law requires a licensed contractor for any construction project valued over $500. ADU projects in LA range from $70,000 to $450,000, so a CSLB-licensed contractor with a B (General Building) classification is required. Hiring an unlicensed contractor is illegal and voids most insurance protections.

What should I look for in an ADU builder in LA?

Look for an active CSLB license with B classification, contractor bond on file, workers’ comp insurance, clean complaint history, ADU-specific experience (not just general remodeling), LADBS permitting experience, and references from completed ADU projects. Get 3 to 5 fixed-price bids before committing.

Are ADU builders in Los Angeles licensed?

Not all of them. Los Angeles has one of the highest rates of unlicensed contractor activity in California. Always verify the license at cslb.ca.gov before signing any contract or making any payment. Every builder on VerifiedADU has been independently verified against active CSLB records.

Can I build an ADU myself in Los Angeles?

California allows owner-builders to pull their own permits, but the work must still meet all building codes and pass inspections. For ADU projects, this is impractical for most homeowners due to the complexity of foundation, structural, plumbing, electrical, and HVAC work. Most jurisdictions also require a licensed contractor for work involving structural modifications.