Services ADUs & DADUs

Our ADUs and DADUs service offers tailored solutions for homeowners seeking additional living space, providing expertly designed and efficiently built accessory dwelling units to enhance property value and functional living environments.
ADUs & DADUs for No 7 Development in Mount Vernon, WA ADUs & DADUs for No 7 Development in Mount Vernon, WA ADUs & DADUs for No 7 Development in Mount Vernon, WA ADUs & DADUs for No 7 Development in Mount Vernon, WA ADUs & DADUs for No 7 Development in Mount Vernon, WA

Adding an accessory dwelling unit (ADU) or detached accessory dwelling unit (DADU) to your property is a practical and innovative way to enhance your living space. These units offer flexibility, whether you need extra room for guests, a private office, or a rental opportunity. By booking this service, you can design and build a customized unit that meets your unique needs and lifestyle.

ADUs and DADUs not only increase the value of your property but also provide additional income potential through rentals. We promote sustainable living by maximizing existing space without the need for extensive land development. With thoughtful planning and design, these units can blend seamlessly with your primary residence while providing the independence and privacy desired.

Investing in an ADU or DADU allows you to enjoy all these benefits while contributing to smart urban growth in your community. Discover how adding one of these spaces can enhance both your life and property today!

Take a look at what your neighbors are saying about us.
    • out of 5 stars
      I contacted Matt in March 2021 about seeing if he was interested in constructing a deck off a 2nd floor ADU. He came and evaluated the job a couple days later (on a Saturday) and said that not only he could do it, but that it could be done in about 2 days and he could start the very next Saturday. We also agreed that because this was a small project it could be done between his other major jobs and might take a week or two to complete. I was skeptical and expected the typical "something came up, have to postpone/cancel" call, but he showed up bright and early on the following Saturday to start work just as promised. We discussed some modifications which improved the aesthetics of the deck and he got down to business. Two weeks later on a Saturday he showed up again bright and early, completed the deck and it has exceeded my expectations. I watched the entire process and asked many a question, and he had a thoughtful and professional answer for every one. I have carpenters and architects in my family so I probably know just enough to know what is quality work and what is not. Matt really builds beautiful and durable stuff. The planning dept inspector asked a few clarification questions and was very pleased with the structural integrity and how it was built. I have another project in the pipeline and I hope that I can recruit Matt to do that one for me.
      Wesley C
      ADU's & DADU's
    • out of 5 stars
      I definitely recommend No. 7 Development. Matt and his crew were excellent to work with during the renovation process. Personable and extremely knowledgeable, Matt is an excellent craftsman. Everything was completed beyond my expectations! Thank you so much for a great job, outstanding quality, and professionalism.
      Mel Corcoran
      ADU's & DADU's
    • out of 5 stars
      Matt and Kayla were delightful to work with and were very responsive. Matt and his crew did high quality work on our Kitchen remodel. All of Matts crew were professional and courteous, and at the end of a work day, cleaned everything up very well. I can recommend them highly.
      Duncan Landreth
      ADU's & DADU's
Areas we proudly serve
Mount Vernon
Skagit County
Island County
Whatcom County
Snohomish County

Ready to get started?

Book an appointment today.