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Los Angeles ADU Specialists — Design, Permits & Build

Licensed General Contractor | 10+ Years | 200+ Projects Completed

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  • CA License #1098432
  • Fully Insured
  • BBB Accredited

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Our Services

ADU services for Los Angeles homeowners

New ADU Construction

Detached ADUs built from the ground up. Full design-build service.

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Garage Conversion

Turn your detached garage into a permitted living unit.

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Junior ADU (JADU)

Up to 500 sq ft conversion inside your primary residence.

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Permits & Design

Architectural plans, Title 24, and all city/county permits.

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How It Works

3 simple steps from idea to handover

01
Free Consultation

Detached ADUs built from the ground up. Full design-build service.

02
Design & Permits

We handle architectural plans, Title 24 and all permits.

03
Construction & Handover

We build on time, on budget, and pass inspection first try.

Featured Work

Recent ADU projects across LA

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Prefab-Style ADU
NEW ADU

Prefab-Style ADU

Alhambra

450 SQ FT

Prefab-Style ADU — Alhambra The Prefab-Style…

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Detached 2-Bed ADU from Oversized Garage
NEW ADU

Detached 2-Bed ADU from Oversized Garage

Van Nuys

450 SQ FT

Detached 2-Bed ADU from Oversized Garage…

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Pool House ADU
NEW ADU

Pool House ADU

Sherman Oaks

450 SQ FT

Pool House ADU — Sherman Oaks…

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What our clients say

What LA homeowners say

We turned our detached two-car garage into a full 1-bed/1-bath ADU and now rent it for $2,400/month. American Builder handled everything — drawings, permits, framing, all the way to the final inspection. The project came in on budget and only two weeks past the original schedule (permits took longer than expected, which they warned us about upfront). Would 100% use them again.
Maria T.

Silver Lake · Garage Conversion

Building an ADU from scratch felt overwhelming until we called American Builder. They walked us through the whole process during a free consultation — zoning, setbacks, utility connections. Nine months later we have a beautiful 640 sq ft studio in our backyard. Our neighbors asked for their number immediately.
James R.

Culver City · New ADU Construction

We converted unused space attached to our house into a Junior ADU for my mother-in-law. American Builder's team was respectful, clean, and communicative the whole time. They coordinated directly with the city on permits, which saved us a ton of headaches. The finished unit is cozy and exactly what we envisioned.
Sandra & Leo K.

Glendale · JADU

After getting quotes from four contractors, I went with American Builder because they were the only ones who gave me a detailed written scope — not just a ballpark number. The conversion came out great. I especially appreciated the weekly updates and the fact that I could always reach someone by text or call. No ghosting, no surprises.
David M.

Eagle Rock · Garage Conversion

I was a single homeowner navigating this whole process alone and honestly felt lost at first. The team was incredibly patient — explained every step, flagged potential issues before they became expensive problems, and even helped me apply for a construction loan by providing documentation the lender needed. The 500 sq ft ADU they built is absolutely stunning.
Alyssa N.

Pasadena · New ADU Construction

Quick, professional, and fair pricing. They converted my single-car garage into a studio in about 14 weeks. The finish quality is really solid — good drywall, nice tile work in the bathroom, and they even installed a mini-split that barely makes a sound. Already getting rental interest.
Carlos P.

Van Nuys · Garage Conversion

We did a lot of research before choosing a contractor and American Builder stood out for their transparency and the number of completed ADU projects they showed us. The build took 11 months start to finish (permits included). We now have a 2-bed ADU that we're renting long-term. ROI should hit in about 7 years — happy with that.
Hannah & Robert S.

Burbank · New ADU Construction

I just needed help with the design and permit side — I had a different contractor lined up for construction. American Builder handled the architectural plans, Title 24 energy report, and all city submissions. Got approved in about 10 weeks. Way faster than I expected given LA's reputation. Professional and reasonably priced for this service.
Tony W.

Los Feliz · Permits & Design

We converted a large bedroom and attached bathroom into a JADU for our college-age son. The team was minimal and clean — I barely knew they were working most days. Done in under 5 months from contract signing to final walk-through. Everything is up to code and the city inspection passed first try.
Michelle J.

Koreatown · JADU

Third contractor I tried after two bad experiences elsewhere. American Builder actually showed up when they said they would, answered calls, and the finished product looks great. The garage is now a proper 1-bed unit with a full kitchen. Already rented it out. Wish I'd found them first.
George F.

North Hollywood · Garage Conversion

I'm a real estate investor and have now used American Builder for two ADU builds. Both came in at or below budget, both passed inspections cleanly. The second build was even smoother than the first — they remembered my preferences and proactively flagged a foundation issue early that saved me about $8K. This is my go-to contractor for LA ADU work.
Patricia L.

Alhambra · New ADU Construction

Very happy overall. They did a two-car garage conversion into a 2-bed ADU. The project manager kept a shared schedule with us so we always knew what was happening next week. Only thing I'd mention is parking near our house got a bit tight during construction, but honestly that's just how it goes. End result is excellent.
Brian K.

Sherman Oaks · Garage Conversion

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