ADU West Coast ADU projectLicense Verified

ADU West Coast

Serving Seal Beach, Los Angeles, Long Beach, Anaheim & more · Based in Seal Beach, CA

Pricing on request — unlock ADU West Coast's ADU pricing for your project

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About ADU West Coast

ADU West Coast is a CSLB-verified contractor listed in Orange County with classification B.

6+ years building ADUs · CSLB 1064076 · B - General Building Contractor

ADU West Coast ADU pricing

Pricing varies by unit type, size, finishes, and site conditions. Unlock ADU West Coast's project pricing for your lot — free, no obligation.

Unit typeTypical sizePricing
Studio / JADU≤ 500 sq ftPricing locked — unlock to view
1-bedroom detached ADU600–750 sq ftPricing locked — unlock to view
2-bedroom detached ADU750–1,000 sq ftPricing locked — unlock to view
Garage conversion400–600 sq ftPricing locked — unlock to view
Attached ADU400–800 sq ftPricing locked — unlock to view

Pricing is unlocked per project

Share a few details and we'll send ADU West Coast's pricing for your build.

Services ADU West Coast offers

  • Detached ADUs
  • Attached ADUs
  • Garage Conversions
  • Junior ADUs (JADU)
  • Permitting

What ADU West Coast handles

Design & permitting

In-house design and full permit handling.

  • Architectural design & 3D renderings
  • Structural & Title 24 energy plans
  • City plan-check submittal & corrections

Construction

Turnkey ground-up and conversion builds.

  • Foundation & framing
  • Detached, attached & garage-conversion ADUs
  • Electrical, plumbing & HVAC

Financing

Guidance and lender introductions.

  • Renovation / construction-loan guidance
  • HELOC & cash-out refinance referrals
  • ADU-specific (after-build-value) lenders

Project types

ADU formats this builder takes on.

  • Detached ADU
  • Attached ADU
  • Garage / ADU conversion

Warranty & support

What's covered after move-in.

  • Workmanship warranty
  • Manufacturer materials warranties
  • Dedicated project manager

Reviews of ADU West Coast

5.036 reviews
Verified

Recently, I’ve had the opportunity to work with Cameron and the ADU West Coast team on a new home project. I am extremely impressed with their services that other companies have lacked. Everything from the pre-construction process to final close out has been very smooth, along with great communication and transparency during construction. If you’re looking for a company that operates with the highest standards, I’d recommend ADU West Coast.

Max “MaxMufc2018” T0 found this helpful
Verified

As a Costa Mesa-based realtor working throughout LA and Orange County, ADU West Coast has become my go-to recommendation whenever ADUs come up — especially for multifamily properties. On a recent Long Beach project, Cameron personally conducted a site inspection and provided a detailed feasibility analysis covering unit count, setbacks, parking, and realistic build costs before any commitment was made. My client ultimately moved forward, and ADU West Coast successfully designed and built 4 ADUs while handling plans, permits, and construction entirely in-house. The project was completed on time, on budget, and communication throughout the process was excellent, with consistent updates and daily coordination. For any realtor or multifamily owner exploring ADU opportunities in LA or Orange County, I highly recommend ADU West Coast.

Tay0 found this helpful
Verified

My wiife and I had been thinking about building a granny flat in our Los Angeles backyard for my mother-in-law for over a year but had no idea where to even begin. A neighbor in Huntington Beach recommended ADU West Coast, and I'm stoked that they did. Cameron came out for a site visit, explained exactly what we were able to build under current ADU regulations, and his team handled the entire permit submittal. Armando and the construction crew were incredibly professional and respectful of our property throughout the build process. The finished ADU is amazing, with all the requested and agreed upon specs, including modern finishes, great natural light, and fully independent living space. The whole project from design to move-in took about 14 months. If you need a home addition or ADU contractor in Southern CA, I strongly recommend ADU West Coast. The whole process was easy and turnkey and so low stress. Thank you team!

Travis Halopoff0 found this helpful
Verified

ADU West Coast is absolutely superb, and I recommend them highly. After purchasing a property which had a 2 car garage that I wanted to covert to an ADU, and a ton of work needed on the “main house,” I was faced with the rather daunting task of hiring a construction company. Like me, you’ve probably heard construction horror stories throughout your life, and the thought of undergoing a big project can be scary. I actually discovered ADU West Coast online, and was immediately stuck by their videos and public transparency of their current projects. I contacted their own Cameron Meredith, and decided to give them a go. The project was much more involved than you might think. It included going back and forth with the City of Orange over permits, historical “approvals” for materials, and more. With every “bump in the road” and every step of the way, things went as smoothly as you can possibly imagine. I got almost daily updates, and they were as communicative as possible. …and the job they did? It came out absolutely beautiful. In fact the gentleman that owns the house next door (who is part of the City of Orange’s Chamber of Commerce) told me “Thanks so much for helping raise the worth of my house, and the neighborhood too!” That pretty much says it all. If you’re looking for peace of mind and excellent craftsmanship, look no further!

Rolly DeVore0 found this helpful
Verified

We recently completed our ADU garage conversion with ADU West Coast. The house is for my mom who was moving down from Sacramento so we were balancing her requests from long distance and our desire to have the house blend in with our current home. Cameron and team were exceptional throught the process and the the project was completed in about 9 months. The actual build did not take long once the permits and drawings were all approved by the city. The actual build was between 4-5 months. The crew, led by their PM, Ruben was also very helpful, giving us ideas and recommedations on how to improve the house. Anytime we found something that needed to be corrected or tweaked they were quick to remedy the issue. We checked out a few ADU companies before deciding on ADU West Coast but found the type of build they offered and their regular communication the right fit for us. Cameron also gave us tours of a few of their projects before we even agreed to sign with them. We would recommend using them, but like any project we do recommend that you are personally involved. Their team was very open to us checking on the progress each day. Also, they were also very good about keeping the exterior clean as much as possible. We've seen other homes where the exterior becomes a dump but Cameron and team were constantly making sure the property didn't become an eyesore while the work was being completed. I would definitely recommend them for your ADU conversion.

Patrick Burwell0 found this helpful

Frequently asked questions about ADU West Coast

What does ADU West Coast offer?

ADU West Coast is a full-service ADU builder serving Seal Beach, CA, handling design, permitting, and turnkey construction for detached ADUs, attached ADUs, garage conversions, and junior ADUs (JADUs). ADU West Coast holds a 5.0-star rating across 36 verified homeowner reviews.

Is ADU West Coast licensed and insured?

Yes. ADU West Coast holds an active CSLB license (1064076), classified B - General Building Contractor, and is bonded and insured.

How much does ADU West Coast charge to build an ADU?

ADU West Coast prices every ADU per project — your cost depends on size, finishes, and site conditions. Garage conversions are the most affordable path; detached units cost more. Pricing is unlocked per project: request a quote to get ADU West Coast's exact, no-obligation estimate for your lot.

What areas does ADU West Coast serve?

ADU West Coast builds ADUs in Seal Beach, Los Angeles, Long Beach, Anaheim, Huntington Beach, Costa Mesa, and surrounding areas.

How long does ADU West Coast take to build an ADU?

Most ADU projects run 6–12 months end to end — roughly 1–2 months for design and permitting (California caps plan check at 60 days for compliant units) and 4–8 months of construction. ADU West Coast confirms a timeline for your specific project during the feasibility consultation.

How do I get a quote from ADU West Coast?

Tap any "Get a Quote" button on this page to share a few details about your property and project. We'll confirm your service area, match you directly with ADU West Coast, and set up your free feasibility consultation — no obligation.

Where ADU West Coast works

Seal Beach, CAService-area map
Street View
  • City Building & Safety
  • Planning Department
  • Permit Center

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