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ADU Contractors in Seattle

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Seattle / 50 mi
Accessory Dwelling Units
1 – 15 of 775 professionals
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775 Professionals

Featured Reviews for ADU Contractors in Seattle

Handyman Rescue Team
ADU Contractors in Seattle
Average rating: 5 out of 5 starsOctober 22, 2020
“The gentleman who worked at my house was skilled, friendly and did a great job. I was very happy with the whole experience.”
U N I Q U E
ADU Contractors in Seattle
Average rating: 5 out of 5 starsApril 28, 2017
“Unique home Construction never cut the corners, Reba and his team take care of all details. They are very easy to communication, they have lots of creative interior design ideas which can make your place much more warmer and cozy Highly recommend unique home Construction Thank you Reza :)”
Huskies Remodeling
ADU Contractors in Seattle
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.”
Gaspar's Construction
ADU Contractors in Seattle
Average rating: 5 out of 5 starsMarch 4, 2013
“We hired Gaspar's to give the run-down, 104 year old Seattle house we purchased a "makeover," including refinishing the original fir floors, partial kitchen and basement upgrades, and detailed painting of miles of original wood trim! Gaspar's was upfront, professional, and responsive in every aspect, providing a dedicated and experienced project manager who kept us informed and involved at every step. The project was smooth, streamlined, and we loved the results so much we hired Gaspar'sagain the following year to remodel our main bathroom. They carefully preserved and restored the original clawfoot tub, and suggested upgrades that were modern but preserved the original character of our home, including a new pedestal sink with modern lines. I would not hesitate to recommend Gaspar's, especially for that "complete experience" from start to finish.”
Equinox Builders
ADU Contractors in Seattle
Average rating: 5 out of 5 starsApril 24, 2023
“Liroy and his team did a fantastic job! We had a large remodeling project which included our kitchen, master bathroom, powder room and outdoor grill. His team is professional, reliable and fun to work with! I have recommended Equinox Builders to my friends and will use them for future projects. Thank you !”
Rainier Custom Homes
ADU Contractors in Seattle
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.”
Hi Hat Remodeling
ADU Contractors in Seattle
Average rating: 5 out of 5 starsMay 22, 2022
“Patrick did an excellent job with my kitchen remodel! He was always punctual, helped me coordinate the countertop amd appliance installations, left the work space organized and clean at the end of each day and followed up with me periodically after it was all finished to see how things were and if there was anything I might have questions or concerns about. He and Ami are a power team...they genuinely care about their clients and providing not only excellent work and craftsmanship, but a top notch customer service experience! I get so many compliments on my kitchen thanks to Hi Hat!”
Schulte Design Build
ADU Contractors in Seattle
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”
RW Anderson Homes
ADU Contractors in Seattle
Average rating: 5 out of 5 starsFebruary 4, 2015
“We have used RW Anderson over the years for several small projects and have always been pleased with their work so we hired them for a major remodel. Ryan Anderson and the RW Anderson team did a really wonderful job. The 70 year old kitchen and dining room in our large home presented some significant remodeling challenges but we were thrilled with the workmanship, management and outcome. Not only was RW Anderson transparent on costs with regular reports on costs versus budget, they greatly assisted us in understanding the trade-offs inherent in the myriad of decisions to be made in a major remodel. We are thrilled with the outcome and strongly recommend Ryan and his team..”
Forrister Contracting
ADU Contractors in Seattle
Average rating: 5 out of 5 starsDecember 5, 2023
“I first worked with Ryan and his crew when I wanted to update my West Seattle home. I wanted to update the bathroom without spending a small fortune. Ryan came up with great looking, cost effective solutions. They also replaced the windows & doors. They did such a nice job that I contacted them again when I wanted to convert my downstairs into an ADU. Once again, Ryan came up with cost saving ideas for the ceiling, bathroom, flooring & kitchenette. It was completed in a timely manner and looked amazing! I will absolutely use them again if I need any more work done. I really can’t overstate how professional and easy to work with Ryan and his crew are.”
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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 Seattle on Houzz: See Seattle 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 Seattle 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 790 ADU Professionals, registered on Houzz in Seattle.

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 Seattle. 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 Seattle: 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?
775Local Pros on Houzz Who Serve Seattle, WA
1M+Total Number of Reviews Left by Homeowners
The cost to build a pool in Seattle, WA can vary widely based on factors such as size, type, and location. For detailed cost estimates, check
out the In-Ground Pool Cost.