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ADU Contractors in Washington

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Accessory Dwelling Units
1 – 15 of 1,036 professionals
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1,036 Professionals

Featured Reviews for ADU Contractors in Washington

Christensen Contractors, Inc
ADU Contractors in Washington
Average rating: 5 out of 5 starsDecember 23, 2019
“We wanted to remodel part of our basement and had several contractors come out to provide a bid. We ended up going with Christensen Contractors, Inc because of their professionalism, the options they provided us and the price the quoted was very reasonable. Throughout the process we had constant communication with Don the owner. He was always courteous and available. The crew that did the work were also professional and did an excellent job. The job went extremely well and was better than what we expected. There were never any hidden costs and the job came in on the agreed upon budget. We are extremely pleased with the work of Don’s company and will hire them again for any future work needed.”
DC Premier Construction
ADU Contractors in Washington
Average rating: 5 out of 5 starsDecember 30, 2017
“Tobin construction is professional, dependable, and they do quality work. They went above and beyond to make our remodel a great experience. My kitchen is beautiful!”
CASM Contracting, LLC
ADU Contractors in Washington
Average rating: 5 out of 5 starsMarch 7, 2022
“This is our first time using a contractor on a remodel project. We wanted someone local. The team at CASM Contracting did not disappoint. Every person we had contact with was courteous and professional. The owner and the project manager were both patient and thorough in explaining how the process worked. We are very data driven and felt the information was invaluable in working with them. The project was a full bathroom remodel and we are beyond pleased with the outcome. We received several bids and the cost matched the average. We both work from home and the team was timely, clean, and respectful of the noise level. We would recommend James Steele (owner) and CASM Contracting for all your building needs. We hope to use him in the future for additional remodeling on our 1956 Ranch style home.”
Northlight Custom Builders, LLC
ADU Contractors in Washington
Average rating: 5 out of 5 starsNovember 20, 2019
“Excellent work done within budget. Loved, loved, love how our upstairs remodel turned out for our open floor plan/kitchen remodel. This included taking out walls, installing a new beam, tearing down our kitchen and making everything new again! Tony and team communicated with us regularly about our budget and what was going to happen on the week ahead. They worked around our family of seven and two dogs. Our remodel came in within budget and within the expected completion date. We couldn't be more happy.”
Rainier Custom Homes
ADU Contractors in Washington
Average rating: 5 out of 5 starsFebruary 6, 2015
“Working with Rainier Custom Homes is a great pleasure. Their team is extremely creative, articulate, and well-vested in the happiness of their clients. What I enjoyed most was the collaborative process that their entire team was willing to participate in to make each phase of the project run smoothly and efficiently. I can't say enough about how well they communicate and meticulously pay attention to detail. And last but not least, they were extremely willing to follow my design plans! I am looking forward to more teamwork with them.”
Huskies Remodeling
ADU Contractors in Washington
Average rating: 5 out of 5 starsJune 9, 2021
“in Renton, WA Project: Install a Wood Fence The team members were all very nice and did an outstanding job on my fence. On the last day, they worked through rain and until 7:30 pm to get the job done by the deadline. I will use them again and recommend them freely.”
United Signature Tacoma
ADU Contractors in Washington
Average rating: 5 out of 5 starsJune 10, 2019
“A great, successful comapny. Professional workers who are kind and fairly smart and know what they are doing. Projects are done beautifully and fast. Recommended for everyone.”
Phase II, Inc.
ADU Contractors in Washington
Average rating: 5 out of 5 starsMay 14, 2013
“Tara is an excellent designer who actively listens to her clients and customizes her designs to fit your budget as well as your individual style. She is accountable and does not settle for second best. We are so happy to have worked with Tara and the phase ii team. Our project is beautifully as we'll as functional. We. Would heartily recommend Tara for your project.”
Schulte Design Build
ADU Contractors in Washington
Average rating: 5 out of 5 starsMay 20, 2013
“We contracted with Todd Schulte regarding our upstairs dormer project, which enlarged bedrooms and reconstructed our bathroom. He was responsive and responsible,. We were on a relatively tight budget and Todd was open to thinking through significant issues and allowing us to do some work on our own. We were quite happy with the work done”
Serene Remodeling, LLC
ADU Contractors in Washington
Average rating: 5 out of 5 starsMarch 15, 2015
“Ken Wachter receives our highest recommendation following our Master bath/closet remodel. He is very organized, communicates well, has a solid knowledge base of all phases of construction and provides a longstanding, highly skilled support crew. Ken made the process easy and we are extremely happy with the results!”
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ADU Contractor FAQs
Just answer a few questions to get matched with a local ADU Professional.
Or browse through the list of trusted ADU Professionals in Washington on Houzz: See Washington ADU Professionals’ profiles, dive into their work photos and check out customer reviews.
  1. Reach out to the pro(s) you want, then share your vision to get the ball rolling.
  2. Request and compare quotes, then hire the ADU Professional that perfectly fits your project and budget limits.
The most popular ADU Professional Services in Washington are:
  • ADU Design and Planning
  • ADU Construction and Installation
  • ADU Conversion
  • ADU Permitting and Code Compliance
  • Accessory Dwelling Unit Architectural Services
  • ADU Interior Design
  • ADU Consultation and Project Management
There are 1,036 ADU Professionals, registered on Houzz in Washington.

An accessory dwelling unit (ADU) is a separate living space that can be added to your property. It functions as an additional dwelling on the same land where your main home is located. ADUs have their own amenities and entrance, providing a self-contained living area. Unlike a traditional home, an ADU cannot be sold separately and is considered part of the same property.

ADUs are subject to specific zoning regulations and building codes in Washington. These regulations determine where and how an ADU can be constructed, ensuring compliance with local laws and requirements. It’s important to consult with local authorities or a professional contractor who is familiar with ADU regulations in your area to understand the specific legal differences and ensure your ADU meets all necessary criteria.

Consider these options for cost-effective ADU:
  1. Prefabricated ADUs: Affordable and easy to assemble, they’re a practical choice. Many prefab ADUs cost under $100,000.
  2. Traditional Construction: Work with an ADU contractor to find budget-friendly options and make smart choices.
Tips for cost-effective ADU construction:
  1. Define your needs: Determine the purpose of your ADU, whether it’s for family, rental income, or a home office.
  2. Consult a contractor in Washington: Their expertise can help with cost-effective materials, designs, and planning.
  3. Prefabricated components: Consider using prefabricated elements like cabinets or bathroom fixtures to save time and money.
  4. Explore financing options: Look for ADU-specific loans or programs to help cover costs.
Ensure compliance with local regulations and seek professional advice. A knowledgeable contractor can make the process smoother and cost-effective.
Why Hire Accessory Dwelling Units on Houzz?
1,036Local Pros on Houzz Who Serve Washington
1M+Total Number of Reviews Left by Homeowners
The cost to build a pool in Washington can vary widely based on factors such as size, type, and location. For detailed cost estimates, check
out the In-Ground Pool Cost.