Perry Design LLC
Bellingham, WA
5.0(4)
ADU ConstructionCustom Home Building
Perry Design LLC. Home builder
Looking for the best custom ADU builders in Bellingham, Washington? Our directory features 8 vetted custom adu builders serving the Bellingham area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.
Perry Design LLC. Home builder
Alderwood Builders LLC. General contractor. 3415 James St, Bellingham, WA 98226, United States
Bellingham Bay Builders. Construction company. 2111 King St, Bellingham, WA 98225, United States
Fox Lake Builders. Custom home builder. 100 Pine St STE 202, Bellingham, WA 98225, United States
Zion Builders, LLC. Contractor. 1201 Cornwall Ave STE 105, Bellingham, WA 98225, United States
CAZ Construction. Remodeler. 2201 Humboldt St, Bellingham, WA 98225, United States
Walker Building Company. General contractor. 1106 Harris Ave STE 302, Bellingham, WA 98225, United States
Chuckanut Builders. General contractor. 1000 N State St, Bellingham, WA 98225, United States
Bellingham is one of the top markets for accessory dwelling units in Washington. With growing demand for affordable housing, ADU construction in Bellingham offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of custom adu builders in Bellingham helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in Bellingham 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 custom adu builders to compare prices.
Yes, ADU construction in Bellingham 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 Bellingham 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.