About Us
Sustainable ADU Construction in Bellingham, WA | Eco-Friendly Backyard Homes
At Bellingham ADU Builders, we’re more than a construction company—we’re stewards of Whatcom County’s environment and community. Founded by lifelong residents with over 45 years of local roots, we specialize in sustainable ADU construction that prioritizes energy efficiency, low environmental impact, and timeless Pacific Northwest design.
What Sets Us Apart
End-to-End Sustainability
- Solar-Ready Designs: Pre-wired for rooftop solar panels (30% federal tax credit eligible) 7.
- Energy Star Appliances: Standard in all units to maximize efficiency.
- Reclaimed Materials: Salvaged cedar siding and recycled steel roofing options 9.
Streamlined Permitting
- 2023 Ordinance Compliance: We navigate Bellingham’s updated ADU codes (BMC 20.10.036) 11, including parking exemptions near transit routes like Bus 331.
- Pre-Approved Designs: Accelerate Type I permits by 4–6 weeks with our city-vetted plans 3.
Transparent Process
- Step 1: Free Site Assessment (Zoning + solar potential analysis).
- Step 2: Custom 3D Renderings + Energy Modeling.
- Step 3: Permitting & Construction (Avg. timeline: 6–8 months).
Our Journey: 45 Years of Local Expertise
Since 1995, we’ve built 200+ ADUs across Whatcom and Skagit Counties, earning recognition as Bellingham’s top-rated ADU contractor (2024 Best of Bellingham Finalist). Our team includes:
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Carlos Valdes, with over 14 years of experience in the commercial construction industry, Carlos has led a wide array of projects, from custom home builds to whole home remodels. We take pride in being trusted home builders, with a foundation built on a steadfast commitment to excellence in construction and integrity in every build.
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James, Lead Architect: LEED-certified designer specializing in net-zero ADUs.
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Local Craftsmanship: 90% of our subcontractors are Whatcom County-based, ensuring quality and community reinvestment.
