3PEAK Architecture began in 1993 as Williams & Associates Architecture, built on a foundation of thoughtful, client-focused design.  In the years that followed, the firm grew through collaboration, craftmanship, and strong relationships with clients and community.  

In 2025, after 30+ years of service a new identity, 3PEAK Architecture, was embraced that honors the company's history while looking boldly toward the future.  The firm's home office is located in Spearfish, South Dakota, a community surrounded by three mountain peaks:  Crow Peak, Spearfish Mountain, and Lookout Mountain.  These landmarks inspired the firm's new name and reflects both its faith and the three core values that guide everything they do: INTEGRITY, QUALITY, and ADVENTURE.  

3PEAK Architecture is a trusted practice shaped by a team of dedicated architects, designers, and support staff who share a common purpose:  creating spaces that are intentional, enduring, and connected to place. 

3PEAK Architecture

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3PEAK Architecture

Org chart

Teams

Offices

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