• Industry

    Contractor / Installer

  • Services offered

    General Contracting, Construction Management

  • Has Experience with these buildings:

    Assembly (Worship, Restaurant, Theater, etc.), Business (Office), Civic (Recreational), Educational, Factory/Industrial (warehouse, storage, parking, etc.)

  • Has Experience with these materials:

    Acoustic Underlayment, Mass Timber, Cross-Laminated Timber (CLT), Dowel-Laminated Timber (DLT), Timber-Frame / Post and Beam, Heavy Timber Decking, Hybrid (wood with steel or concrete), Structural Composite Lumber (e.g. LVL and LSL), Light-Frame, I-joists, Lumber, Open-web trusses, Wood structural panels, Coatings, Fasteners / Hardware

  • Has Experience with construction types:

    II-A, II-B, III-A, III-B, V-B

Established in 2003 by local industry visionaries, Cornerstone General Contractors, Inc. was born with a mission to elevate communities through exceptional preconstruction and construction services, crafting high-quality facilities. 

At our core, we are dedicated to leaving a lasting, positive imprint on every community we touch. Our commitment extends beyond the structures we build, intertwining with the relationships we nurture. We primarily build educational facilities and buildings that serve the public for justice, wellness and community. 

We have completed a number of mass timber projects including the first of several public school buildings in the region to utilize mass timber or cross-laminated timber (CLT) as its primary structure. 
Operating Locations
Corporate Office

Bothell, WA

Branch Office

Spokane, WA

Innovative Light-Frame and Mass Timber Project Portfolio:
Projects Filtered By:

Evergreen High School

Seattle, WA

Hilltop Heritage Elementary School (ES No. 16)

Renton, WA
2025 MT+ Conference