Architect in Bellevue, WA — Piper Cole Architects

Bellevue has evolved from a Seattle suburb into one of the most economically dynamic cities in the Pacific Northwest — home to major technology companies, a world-class downtown, and some of the most valuable residential real estate in Washington State. Piper Cole Architects serves Bellevue clients with residential and commercial architecture services, bringing 25 years of Eastside practice to projects ranging from lakefront estates to downtown mixed-use developments.

Bellevue Architecture Services

Luxury Residential Architecture

West Bellevue and adjacent Medina are among the most expensive residential markets in Washington State. Homes here often feature Lake Washington waterfront, expansive lots, and sophisticated design programs. We design luxury residences that balance privacy, views, indoor-outdoor living, and long-term investment value — producing homes that set the standard for the neighborhoods they anchor.

Home Additions and Renovations

Many Bellevue homeowners are choosing to renovate rather than move in a high-cost market. Primary suite additions, kitchen expansions, second-story additions, and whole-home renovations allow families to get the space and quality they need without the transaction costs of a move. We design additions that integrate seamlessly with existing architecture and deliver significant quality-of-life improvement.

ADU Design in Bellevue

Bellevue allows ADUs on most residential lots. A well-designed Bellevue ADU can generate $2,000 to $2,800 per month in rental income while adding meaningful value to the property. We handle the full design and permitting process for Bellevue ADU projects.

Commercial and Mixed-Use Design

Bellevue’s commercial market is one of the most active in the region. The downtown core, the BelRed corridor, and the Eastgate area all present active commercial development opportunities. We design tenant improvements, office buildings, medical facilities, and mixed-use developments throughout Bellevue — navigating the City’s design review process and commercial permitting requirements.

BelRed Corridor Development

The BelRed urban center — centered on the Spring District and the new light rail station — is Bellevue’s most rapidly evolving urban neighborhood. New mixed-use projects in BelRed must comply with the BelRed Design Standards, which regulate building massing, ground-floor activation, materials, and facade articulation. We have experience designing projects in this emerging urban district.

Bellevue Neighborhoods We Serve

Our Bellevue work spans the city’s diverse neighborhoods: West Bellevue, Medina (city boundary area), Enatai, Lake Hills, Factoria, Eastgate, Crossroads, Newcastle, Somerset, BelRed, and the Downtown Bellevue core.

Bellevue Permitting Timeline

Bellevue permits are processed through the City of Bellevue Development Services, submitted via MyBuildingPermit.com:

• Residential addition: 4 to 8 weeks
• New single-family home: 8 to 14 weeks
• ADU: 6 to 10 weeks
• Commercial / mixed-use: 10 to 20 weeks; design review adds additional time

Our Architecture Services

• Residential Architecture — Luxury homes, additions, and ADUs in Bellevue
• Commercial Architecture — Office, medical, and mixed-use in Bellevue
• Renovation & Restoration — Whole-home renovations across Bellevue neighborhoods
• Interior Architecture — High-end interior design and space planning
• Our Design Process — From first consultation to final inspection

Other Service Areas

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