Dumas Build LLC
Seattle, WA
5.0(0)
ADU Construction
Dumas Build LLC. Construction company. 523 NE 81st St, Seattle, WA 98115
Looking for the best tiny home builders in Seattle, Washington? Our directory features 118 vetted tiny home builders serving the Seattle area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.
Dumas Build LLC. Construction company. 523 NE 81st St, Seattle, WA 98115
Fuller Living Construction. General contractor. 5304 Green Lake Way N, Seattle, WA 98103, United States
Seattle Upgrade Construction LLC. Handyman/Handywoman/Handyperson. 13725 32nd Ave NE, Seattle, WA 98125
BUILD LLC. Contractor. 5512 1st Ave NE, Seattle, WA 98105, United States
Seattle Modern Buildings ADU Builder is a Seattle-based design-build firm specializing in detached ADUs, duplexes, and modern homes.
Metis Construction. General contractor. 941 S Nebraska St, Seattle, WA 98108, United States
AM Contracting LLC. Construction company. 108 S 108th St, Seattle, WA 98168, United States
Exceptional Home Builders. Remodeler. 1525 11th Ave, Seattle, WA 98122, United States
Toepfer Construction Co. General contractor. 6528 Phinney Ave N, Seattle, WA 98103, United States
AAA Builders LLC. Handyman/Handywoman/Handyperson. 2100 N 106th St, Seattle, WA 98133, United States
Seattle Backyard Homes. Home builder. 4813 37th Ave NE, Seattle, WA 98105, United States
Cascadia ADU. Custom home builder. 901 1st St, Snohomish, WA 98290
Seattle-ADU. General contractor. 509 Olive Wy, Seattle, WA 98101, United States
microhouse. Architect. 114 N 42nd St, Seattle, WA 98103, United States
Seattle ADU Solutions. Construction company. Closed · Opens 8 AM Mon
Full Service, Licensed Kitchen & Bath Remodelers in Seattle
1AD Studio LLC. Architectural designer. Closed · Opens 8 AM Mon
abode builds. Contractor. 2880 NW Market St, Seattle, WA 98107, United States
Build-Up Construction. Remodeler. 701 5th Ave S Suite 4200, Office number 4266, Seattle, WA 98104, United States
Proform Builds. Custom home builder. 701 NE Northlake Way, Seattle, WA 98105, United States
Seattle is one of the top markets for accessory dwelling units in Washington. With growing demand for affordable housing, ADU construction in Seattle offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of tiny home builders in Seattle helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in Seattle typically range from $150,000 to $350,000 depending on size, design, and finishes. Garage conversions are generally less expensive ($80,000–$150,000), while custom-built detached ADUs can cost more. Get free quotes from our listed tiny home builders to compare prices.
Yes, ADU construction in Seattle requires building permits. Washington has specific ADU regulations, and local zoning laws may have additional requirements. Our listed builders can help you navigate the permitting process.
ADU construction timelines in Seattle typically range from 4–12 months, depending on the project type. Prefab ADUs can be installed in 2–4 months, while custom builds may take 8–12 months including design and permitting.