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Exterior view of the Bainbridge Island Museum of Art, designed by a green commercial architect firm in the Bainbridge area
Bainbridge Island Museum of Art • Bainbridge Island, WA
Exterior view of the Olympia Prairie Home, designed by an eco-friendly home architect firm specializing in sustainable architecture
Olympia Prairie Home • Olympia, WA
Exterior view of the Seaview Escape, designed by an eco-friendly home architect firm specializing in sustainable architecture
Seaview Escape • Bainbridge Island, WA
Exterior view of the Harrison Urgent Care Facility, designed by a sustainable public works architecture firm based in Seattle
Harrison Medical Center • Bainbridge Island, WA
Exterior view of the Tanner Building in Kingston, WA, designed by a sustainable commercial architecture firm in Washington State
Tanner Office Building • Kingston, WA
Exterior backyard view of Island Retreat, a sustainable home designed by an eco friendly architecture firm based in the Seattle area
Island Retreat • Bainbridge Island, WA
Exterior view of the Tumble Creek Cabin, an eco-friendly home designed by a sustainable home architecture firm based in Seattle.
Tumble Creek Cabin • Cle Elum, WA
Exterior courtyard view at the Bainbridge Island Museum of Art, designed by a sustainable public works architect firm based in Seattle, WA
Bainbridge Island Museum of Art Courtyard • Bainbridge Island, WA
Exterior view of the Bainbridge Island Museum of Art, designed by a green commercial architect firm in the Bainbridge area
Bainbridge Island Museum of Art • Bainbridge Island, WA
Seattle Architects Coates Design specializes in sustainable design and green building techniques. Unique among other Seattle Architects is our ability to solve complex design problems with a customized, client-focused design process that is both efficient and highly rewarding.

Our 14-person architectural design firm is located on Bainbridge Island near Seattle, Washington, providing professional design services for commercial, civic, residential and healthcare projects all over the State of Washington, as well as California, Oregon, Idaho, and beyond. These services include architecture, programming and planning, interior design, feasibility studies and sustainable design.

The Coates Design team is inspired by Owner and Architect Matthew Coates AIA, who has built a firm that is committed to creating a positive impact. As a local Seattle Architect, Coates has carefully assembled a creative and experienced team that shares a deep belief that architecture, when executed thoughtfully, builds community and contributes to the fiber that elevates and holds society together. We believe that architecture itself is often shaped by its biological and inherent relationship to its environment. Our desire is to create and advocate for responsible architecture; architecture that advances the quality of our world, and our ability to meaningfully engage with it. This is the driving force and inspiration behind our work.

The core values of the firm are based on simple principles and strategies:

Do the right thing.

Take the long-term view and create designs that benefit the environment, the economy and the community.

Call us now for a complimentary phone conversation about your project.

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Coates Design Architecture + Interiors

Seattle Office

900 Winslow Way E #210, Bainbridge Island, WA 98110

Los Angeles Office

1501 Lincoln Blvd. #1020, Venice, CA 90291