WM Construction is a licensed ADU contractor in Los Angeles offering full-service builds, from site assessment and design to permitting and post-construction support, helping homeowners add granny flats, garage conversions, and in-law suites compliantly.

WM Construction – ADU Contractor in Rancho Cucamonga, CA

About WM Construction

ADU Construction in Los Angeles with WM Construction

Building an accessory dwelling unit in Los Angeles is a significant undertaking that requires careful planning, knowledge of local regulations, and experienced hands. WM Construction is an ADU contractor serving the Los Angeles area, offering services that span the full lifecycle of an ADU project — from initial site assessment through to post-construction support.

Whether a homeowner is considering a detached ADU, a granny flat, an in-law suite, or a garage conversion, working with a contractor who understands California's specific requirements is essential. WM Construction has developed a track record in ADU construction across Los Angeles, helping homeowners navigate the process with a structured and compliant approach.

Services Provided by WM Construction

WM Construction offers a range of services designed to cover each phase of an ADU build:

  1. Site Assessment & Feasibility Studies — Evaluating property zoning, setbacks, and existing infrastructure to determine what type of ADU is viable on a given lot.
  2. Design & Architecture — Developing functional layouts that make efficient use of available space while meeting Los Angeles ADU regulations.
  3. Permitting & Documentation — Managing permit applications and ensuring all documentation aligns with building code requirements.
  4. Full Construction Services — Handling the build from foundation to roofing, including interior finishes, flooring, and energy-efficient systems.
  5. Post-Construction Support — Providing warranties, maintenance guidance, and assistance with final inspections.

As an accessory dwelling unit builder operating in Los Angeles County, WM Construction is familiar with the structural and seismic codes that apply locally, as well as the utility connection requirements for water, electricity, and HVAC systems that ADUs must meet.

What to Consider When Choosing an ADU Contractor

Selecting the right ADU builder involves more than comparing quotes. Homeowners should take several factors into account before committing to a contractor:

  1. Licensing & Insurance — Confirm the contractor holds a valid California contractor's license and carries appropriate liability insurance.
  2. Past Projects & References — Reviewing completed ADUs gives a clearer picture of the quality and reliability a contractor delivers.
  3. Knowledge of Local Codes — A capable ADU contractor should be well-versed in California ADU regulations under Government Code §65852.2, as well as city-specific zoning laws.
  4. Clear Project Process — A defined timeline and structured workflow help reduce the risk of delays and unexpected costs.
  5. Communication — Regular updates throughout the project keep homeowners informed at each stage.

WM Construction positions itself as a granny flat builder and in-law suite builder that brings compliance knowledge and construction experience together. Their approach is intended to reduce the complexity that often comes with ADU projects in Los Angeles, where permitting and zoning requirements can be particularly involved.

For homeowners looking to add a backyard cottage, a Casita, or a JADU to their property, having a contractor who understands both the technical and regulatory sides of the work can make a meaningful difference in how smoothly a project progresses and whether the finished unit meets all required standards.

Services

WM Construction performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Feasibility & Site Assessment
  • Finishing & Fit-out
  • HVAC installation
  • Maintenance contracts

WM Construction Reviews

Dan Reade

2026-01-16
"Had a very positive experience with WM Construction for a bathroom remodel. We want to particularly recommend Amir, who was our primary contact person throughout the remodel. Amir went above and beyond, responding regularly to our calls and texts and really listening whenever we had concerns. We would work with WM again just to work with Amir; he is a customer-focused coordinator who really wants to make sure you are happy with the final project. Other areas: price was competitive with other contractors we had bid on the same job. Any change orders were handled with good communication: before anything went forward, we got a clear quote outlining what any changes would cost. Subcontractors were good: they showed up on time, asked questions, and listened carefully. One area of concern: we did have at least one subcontractor who left a mess - not just construction materials but leftover food containers, etc. However, when we brought this up with Amir, he said he'd handle it and the problem didn't occur again. Overall, we enjoyed the experience and would happily recommend WM Construction and use them again ourselves for future jobs."

Kim Palacios

2025-11-06
"Walid and his team were amazing to work with on our home addition. Our project included a bathroom remodel, an added bedroom, and an expansion of our primary bed and bath. We couldnt be happier with how everything turned out! Walid and Moe were always easy to get a hold of and quick to answer any questions. Their crew was great too - super respectful and easy to have around. They even set up a temporary wall and staged the work so we could stay living in the house during the remodel, which made a huge difference. Everything came out beautiful, on budget, and ahead of schedule! We were told 3-5 months and finished just under the 3-month mark. Wed definitely recommend WM Construction to anyone thinking about a remodel or addition."

Jennifer

2025-10-10
"My husband and I finally decided to remodel our large kitchen, family room and dining room. We spoke with and received estimates from several contractor's and decided to go with WM Construction. Their estimate was very reasonable and we are very happy with the results. Mamoon played an integral part in helping us design and bring my vision to reality. He was so helpful when we met to pick out the cabinets and countertops. It can be so overwhelming and he made it very easy. Moe, the project manager, is amazing. He treated the project as if it was his home that was getting remodeled. He came by almost daily to make sure the project was going well and on time. He would respond to my calls or texts right away. The crew that worked on our house were on time, respectful, friendly, very clean and answered any questions I had. We had a 535 lb 60" range installed. It took several men to carry it up a short flight of stairs to the front door and maneuver into a somewhat narrow doorway and get it installed without a scratch, to the range or the walls. With the amount of work we had done, it was estimated to take close to 8 weeks and they finished on time. And their workmanship was amazing. I would highly recommend WM Construction and especially Mamoon and Moe. I would definitely use them again for any future projects I may have."

Doug Yegge

2024-01-26
"From the time we met Walid on the day he did the walk through and gave us a quote, we were confident that this build was going to be a smooth experience. His professionalism and knowledge of what needed to be done was apparent and he didnt disappoint. We were modifying a downstairs wing of our house to be an ADU for my mom and after waiting for months on the permits from the city, Walid and his team were ready to begin in early November. And when I say begin they did all the demo and framing in the first couple days! We told him our goal was to have my mom in by Christmas and he told us he would do his best to finish by then, but he couldnt guarantee, since he didnt know if there would be any snags. But knowing that was the deadline, he worked his hardest to finish everything by then. And aside from the final inspection, the ADU was completed by Christmas! She even got to put her tree up in the front window . Walids team of framers, plumbers, electricians, and miscellaneous crew, as well as his project manager, Mo, were always kind, tidy, and thorough. They were all willing to listen to our needs and modify as things came up. We could text Walid at any time with questions or concerns and he would respond promptly. Hes a genuinely kind man and knows what hes doing! Without a doubt, Walid is the man for your job. Its hard to find an honest and trustworthy contractor with a crew that you can trust. But when we need something more done at our house, were calling Walid with no hesitation!"

Pamela Sheehan

2023-04-30
"Will and his team from WM Construction did an amazing kitchen remodeling, fireplace do over and bathroom update. Will provided us with great ideas and designed our kitchen, fireplace, and bathroom so much nicer than I ever imagined. In addition, they relocated our cooktop, replaced the flooring and added needed recessed lights and ceiling fan. The team of WM were great to work with. They were on time, tidy, professional, knowledgeable and very respectful of our home. I highly recommend WM Construction for any of your home remodeling projects you may have."

Specifics

Licensed

Opening hours

Monday 10:00AM - 7:00PM
Tuesday 10:00AM - 7:00PM
Wednesday 10:00AM - 7:00PM
Thursday 10:00AM - 7:00PM
Friday 10:00AM - 7:00PM
Saturday 10:00AM - 5:00PM
Sunday 10:00AM - 5:00PM

Location

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