Architect in Sammamish, WA — Piper Cole Architects

Sammamish has grown rapidly over the past two decades into one of the most affluent communities in Washington State — consistently ranking among the top cities nationally for median household income and quality of life. The Sammamish Plateau offers generous lots, newer construction, and a strong sense of community, attracting families who want excellent schools, natural amenity, and access to major Eastside employers. Piper Cole Architects serves Sammamish homeowners with residential architecture, additions, and ADU design.

Sammamish Architecture Services

Custom Homes on the Sammamish Plateau

While much of the Sammamish Plateau was developed with production housing in the 1990s and 2000s, custom home opportunities remain on infill lots, larger parcels, and redevelopment sites. We design custom homes that stand apart from the production home context — with better proportions, more thoughtful site relationships, and interior quality that production builders cannot match.

Home Additions and Expansions

Many Sammamish families have outgrown their original homes but value their neighborhoods, schools, and community ties enough to stay. We design additions that give growing families the space they need — primary suite additions, family room expansions, basement finishes, and second-story additions — without the disruption and cost of moving.

ADU Design in Sammamish

Sammamish allows ADUs on residential lots following state law. The city’s strong rental demand — driven by proximity to Microsoft, Google, and other Eastside tech employers — makes Sammamish ADUs a compelling investment. A well-designed DADU in Sammamish can generate $1,800 to $2,400/month in rental income.

Major Renovations

Sammamish’s 1990s and early 2000s production homes increasingly need major updates — floor plan modifications that open kitchens and living areas, primary bath renovations, exterior refreshes, and mechanical system upgrades. We design renovations that transform dated production homes into contemporary residences with genuine design quality.

Lake Sammamish Waterfront

The western edge of Sammamish fronts Lake Sammamish — a beautiful freshwater lake with strong recreational use and high waterfront property values. Lake Sammamish waterfront properties require Shoreline Management Act permits in addition to standard building permits. We have experience with both the regulatory and design dimensions of Lake Sammamish waterfront projects.

Sammamish Permitting

Sammamish building permits are processed through the City of Sammamish Planning and Development Services. Typical timelines:

• Residential addition: 6 to 10 weeks
• New single-family home: 8 to 14 weeks
• ADU: 6 to 10 weeks

Our Architecture Services

• Residential Architecture — Custom homes, ADUs, and additions in Sammamish
• Renovation & Restoration — Major renovations of Sammamish homes
• Interior Architecture — Interior design for Sammamish homes
• Our Design Process — From concept through construction

Other Service Areas

We also serve: Kirkland, Seattle, Bellevue, Redmond, Mercer Island, Issaquah, Bothell, and Woodinville.