ADU West Coast

13001 Seal Beach Boulevard, 90740, Seal Beach, CA

ADU West Coast is a full-service ADU builder in Southern California specializing in garage conversions, detached units, granny flats & JADUs. 15+ years experience, full permitting support & flexible financing. Earn $1,900+/month in rental income.

ADU West Coast, Seal Beach, CA

About ADU West Coast

Transforming Underutilized Spaces into Affordable Homes

ADU West Coast is a full-service ADU builder and design-build firm serving Southern California homeowners and investors. They specialize in converting underutilized garages and backyard spaces into high-quality, income-producing living areas. As a vertically integrated ADU contractor, they manage every aspect of the process — from design and engineering to permitting and construction — all under one roof.

Their sole focus is accessory dwelling units (ADUs), which means homeowners benefit from a team with deep expertise in local regulations, real estate, and construction. With over 15 years of experience in home development projects across every major city in Los Angeles County, ADU West Coast brings unmatched knowledge to each project.

Homeowners who add an ADU can expect an average monthly rental income of $1,900 or more for a 400 sq ft space, depending on the area — that's potentially over $22,800 per year in additional income, along with a significant increase in overall property value.

Types of ADUs They Build

ADU West Coast works with a variety of property configurations to find the best solution for each homeowner. As an experienced garage conversion contractor, detached ADU builder, and granny flat builder, they offer flexible options including:

  • Garage conversions
  • Stand-alone detached units
  • Over-garage additions
  • Basement or attic conversions

Thanks to California state laws that went into effect in 2020, restrictions on ADU construction have been significantly lifted. Single-family zoned properties can now potentially add up to two additional units — an ADU and a Junior ADU (JADU) — effectively functioning as a triplex. ADU West Coast is well-versed in navigating these updated regulations as both a JADU contractor and full-service in-law suite builder.

The benefits of adding an ADU extend beyond rental income. They include:

  • Allowing extended families to maintain privacy
  • Providing a more affordable and safer senior living environment
  • Adding new livable square footage to an existing property
  • Increasing housing supply in high-demand areas
  • Generating rental income that can be used to accelerate loan payoff

A Seamless Process from Start to Finish

ADU West Coast guides homeowners through every phase of the project. Their process begins with an on-site consultation and inspection, which includes an ADU-specific inspection report, a detailed site map, and a customized proposal. From there, their team handles expert design and engineering plans, navigates city regulations, and manages the full permit approval process.

Their seasoned contractors, project managers, and subcontractors bring a wealth of experience to each build, ensuring high construction quality throughout. Upon completion, homeowners can choose to rent the unit for additional income or use it as a comfortable space for family members.

ADU West Coast also offers flexible financing options, providing homeowners with a menu of pre-arranged solutions — whether they prefer to finance the project or pay upfront. This makes them a true one-stop shop for anyone looking to build a backyard cottage, convert a garage, or add a granny flat to their property.

For Southern California homeowners looking for a reliable, experienced, and comprehensive ADU contractor, ADU West Coast delivers quality construction at competitive prices with a streamlined, stress-free experience.

Services

ADU West Coast performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Financing & Loans
  • Feasibility & Site Assessment

ADU West Coast Reviews

Chris Gilman

2025-11-12
"Cant say enough good things about ADU West Coast. Their work quality is top-notch, and their team is extremely knowledgeable. The finished product looks fantastic, and the entire process was smooth and efficient. Communication was clear and consistent every step of the way, and they handled all interactions with local municipalities seamlessly. If you have any ADU needs, I wouldnt look any further ADU West Coast is the team to work with."

Rolly DeVore

2025-11-10
"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, youve 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 Oranges 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 youre looking for peace of mind and excellent craftsmanship, look no further!"

Jordan Haver

2025-11-05
"Working with ADU Westcoast was a great experience from start to finish. Their communication was excellent always clear, honest, and fast. I never felt left in the dark about anything. The quality of their work is first class. The engineering and finish are top-notch, and you can tell they really care about doing things the right way. Everything came together smoothly and quicker than I expected, which was a big plus. The whole team was professional, friendly, and easy to work with. They made the process simple and stress-free, which is rare in construction. If you want great service, great people, and a top-quality ADU, I highly recommend ADU Westcoast. They truly deliver on every level."

Patrick Burwell

2025-03-15
"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."

jacob woodfield

2023-11-09
"Sharing my review from Yelp - We had the best experience with ADU West Coast. We wanted to convert our garage into an ADU for additional rental income to support our family. But we didn't know where to start. Throughout doing research, I noticed Cameron's informative videos regarding ADU's. His knowledge of ADU's helped our family better understand how it works. So, we decided to reach out! Cameron set up an in-person consultation. Throughout our consultation, Cameron took the time to really understand our needs and why we were building the ADU. Also, that we had a tight budget. He took this all into consideration and gave us a lot of great advice and information. We received our quote and it was right in our budget! We signed the contract and from there ADU West Coast did the rest! It was great because our busy family didn't have the time to manage a project like this. They took care of the plans, drawings, permits, talking with the city, construction etc.. All we needed to do was pay the fees and pick the designs. Our project did take a long-time to complete due to the city being backed up on approving permits and inspection and we had some bumps in the road as you can expect with any project. Nevertheless, ADU West Coast did as much as they could to push the city for us and reassure our confidence in the process. The team at ADU West Coast always made themselves available for us to ask any question big or small just a text or phone call away. And we asked A LOT of questions lol. Our ADU is now complete and the quality of work is impeccable. I definitely recommend going with ADU West Coast. Especially, if this is something new for you! We will definitely be using ADU West Coast for our next ADU project!"

Specifics

Free Consultation Free Site Assessment In-House Engineer

Opening hours

Monday 9:00AM - 5:00PM
Tuesday 9:00AM - 5:00PM
Wednesday 9:00AM - 5:00PM
Thursday 9:00AM - 5:00PM
Friday 9:00AM - 5:00PM
Saturday -
Sunday -

Location

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