Coates Design Architects is a full-service architecture and interior design firm based on Bainbridge Island, Washington. While we have experience with a variety of project types across the United States, our true passion lies in creating beautiful, sustainable residential spaces right here in the Pacific Northwest. Our team specializes in residential architecture and interior design that reflect the unique lifestyle, surroundings, and values of each client.

Led by managing partner Matthew Coates—who gained international recognition after winning the Cradle to Cradle (C2C) Home Design Competition in 2005—we are committed to the principles of “Responsible Architecture.” This means making smart, sustainable choices that support the long-term health of the environment, the economy, and our community.

Our Bainbridge Island-based team brings together diverse backgrounds in design, construction, and the fine arts. We work closely with homeowners to turn complex design goals into livable, inspiring spaces. Whether it’s designing a custom home from the ground up or reimagining a home’s interior with thoughtful detail, our approach is always personal, collaborative, and grounded in timeless design.

We know that people spend the majority of their lives indoors, which is why we aim to create homes that are not only functional and efficient, but also restorative and uplifting. Every residential project is an opportunity to craft a space that feels uniquely yours—and to design something that truly feels like home.