What We Do - Custom Home Builds in Bellingham

A1DesignBuild is a locally owned, employee-owned home builder serving Bellingham and Whatcom County, Washington. For more than 75 years, our design-build team has helped Whatcom County homeowners plan, design, and construct homes that are built to last — combining in-house architectural design with hands-on construction expertise under one roof.

As a custom home builder in Bellingham, WA, we handle every stage of the process: free design consultations, custom home building, whole-home remodeling, kitchen and bathroom renovations, and home additions. We're also one of Whatcom County's most experienced ADU builders, helping homeowners add accessory dwelling units, backyard cottages, and multigenerational living space. Our aging-in-place remodeling services make homes safer and more accessible for residents who want to stay in the home they love.

What’s the cornerstone of our approach to home building and remodeling? Sustainability is core to how we build. As a net-zero home builder in Bellingham, we specialize in Structural Insulated Panel (SIP) construction and high-performance building techniques that lower energy costs and environmental impact. And as an employee-owned cooperative, every project reflects a team with a direct stake in doing quality work for our neighbors and extended community.

Whether you're planning new construction, a remodel, or an ADU in Bellingham or greater Whatcom County, A1DesignBuild brings decades of local building experience to your project. Contact us to schedule your free design consultation.