
William Frei Group is a multidisciplinary architecture, engineering, and construction firm founded on the principle that great buildings begin with structural clarity. We bring together architects, structural engineers, electrical engineers, and construction professionals under one roof to deliver projects that are not only visually compelling but engineered for decades of performance.
Our integrated approach eliminates the disconnects that plague traditional project delivery. When the architect and the structural engineer share a table from day one, the result is a building that works efficiently, beautifully, and without compromise.
Learn MoreFrom first sketch to final inspection, William Frei Group provides the full spectrum of architecture, engineering, and construction services each executed with technical rigor and a commitment to buildability.
Comprehensive design services from programming and schematic design through construction documentation, rooted in structural awareness and real-world constructability.
DetailsAdvanced structural analysis, design, and detailing for buildings and infrastructure. We engineer load paths, lateral systems, and foundations that perform under every condition.
DetailsFull-scope electrical system design including power distribution, lighting, fire alarm, and low-voltage systems coordinated seamlessly with structural and architectural disciplines.
DetailsSingle-source project delivery that unifies design and construction under one contract. Faster timelines, fewer change orders, and accountable leadership from start to finish.
DetailsExperienced on-site management and project oversight ensuring schedule adherence, cost control, quality assurance, and safety compliance on every build.
DetailsAssessment, design, and execution of building renovations, seismic retrofits, and structural strengthening programs for aging or repurposed structures.
DetailsChoosing William Frei Group means partnering with a firm where architecture and engineering are not separate disciplines competing for primacy they are one integrated practice focused entirely on your project's success.


Commercial · 42,000 SF

Institutional · 68,000 SF

Residential · 24 Units

Civic · Renovation

Industrial · 120,000 SF

Mixed-Use · Full Service

William Frei is both a licensed architect and structural engineer a rare dual expertise that defines the character of every project the firm undertakes. His leadership philosophy is straightforward: be present, be accountable, and never separate the act of designing from the responsibility of building.
Under his direction, William Frei Group has grown into a trusted partner for clients who demand technical excellence without sacrificing design ambition.
Full Biography