Coates Design Architects is an architectural firm located on Bainbridge Island near Seattle, Washington. The firm provides professional design services for commercial, civic, residential and healthcare projects throughout the United States. Services include architecture, programming and planning, interior design, feasibility studies and sustainable design.

The firm’s managing partner, Matthew Coates, achieved international acclaim by winning the “Cradle to Cradle (C2C)” Home Design Competition in 2005. He captured the momentum from this accomplishment to create a firm dedicated to “Responsible Architecture.” 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.

Eagle Harbor Market Building, Exterior Detail, Copper

Team members with backgrounds in design, construction and the fine arts work together to transform complex design challenges into elegant solutions. The firm works hand-in-hand with our clients to ensure their goals, desires and specifications are met. Our clients have extremely high design standards, and we’re constantly evolving, refining and improving our work process to meet and exceed those expectations.

Coates Design Architects strives to address the reality that people spend 80% of their lives indoors by contributing buildings and spaces to our communities that are provocative, healthful and inspiring. We approach every project as an opportunity to design something unique that reflects the needs and goals of the individual client and creates a meaningful sense of place.

Our team seeks to reveal creative design strategies and technical innovation inspired by our clients, the site and the ecological context. We are collaborative by nature and we involve our customers early and often in the creative process. Our work reflects clean and elegant forms, well-proportioned spaces and natural daylighting combined with a “livable” touch which many designers overlook. We tailor innovative and livable design solutions through a customized approach for each and every client.


As the President and Principal Architect for Coates Design Architects, Matthew Coates brings positive energy to the team that promotes creativity and transforms challenges into innovative and pleasing design solutions. He is forward-thinking, focusing on where architecture and sustainable design are heading – using technology to encourage the most versatile use of energy and materials.
His past projects include: the Bainbridge Island Museum of Art, the Harrison Urgent Care Facility, S’Klallam Tribe Youth Community Center and many more.


We believe that better design leads to better living. We seek to create buildings that not only do no harm– but also have a positive impact on the environment and the people who use them.


Elegant, Innovative and Livable Solutions

We share 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, our ability to perceive it and our relationship to it. This is the driving force and inspiration behind our work.

Responsible Architecture

We are committed to creating buildings that not only do no harm – but also actually have a positive impact on the environment and people who use them. We believe that better design leads to better quality of life. We’re committed to regenerative design whenever practical: buildings that produce their own energy, bio landscapes that produce food, help the ecosystem and fight pollution.




Tumble Creek Residences, Exterior, Covered Patio Other Side

Quality Client Service

We are committed to providing our clients an exceptional experience throughout the design and construction of their project. We actively listen and strive for clear communication. We work to provide an accurate and ongoing description of the design process throughout the project to eliminate surprises. We work collaboratively and enter into each project with a fresh perspective. Our clients bring inspiring ideas, and we want to listen and learn from them. At the same time, it is our responsibility to provide parameters so that each project maintains forward momentum. We keep our clients apprised of schedule and budget and can provide a snapshot of status at any given time. We stay connected to our clients long after their project is completed and are honored to have attended numerous housewarmings and ribbon cuttings.

“Coates worked closely with us every step of the way to ensure our home was not only beautiful and sustainable but also a real manifestation of our vision and our lifestyle.”


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

Do the right thing.

Take the long-term view.

Create designs that benefit the environment, the economy and the community.