Washington Mass Timber Accelerator

Building a stronger, more resilient future, together.

University of Washington Foster School of Business. Design by LMN.

Washington Mass Timber Accelerator

Building a stronger, more resilient future, together.

Green Canopy NODE. Prefabricated Housing

Washington Mass Timber Accelerator

Building a stronger, more resilient future, together.

Greenville Micro Housing. Design by Atelierjones

WA Mass Timber Accelerator (MASSTAC) is sustainably and equitably accelerating the adoption of mass timber in construction, in Washington, and nationally.

Resources & Events

How to Mass Timber

Mass Timber Schools: Case Studies

MASSTAC (Erica Spiritos, Sofia Chavez)

Developed with the Mass Timber Schools Committee, this book features a selection of mass timber schools in construction and in design throughout the Pacific Northwest.

Learn More
Tue
09
Dec

December 9, 2025

AIA Seattle Mass Timber Annual Happy Hour

Event Details & RSVP
Fri
12
Dec

December 12, 2025

Port Blakely Forest Tour

Event Details & RSVP
Tue
31
Mar

March 31, 2026

International Mass Timber Conference

Event Details & RSVP
Get Involved

Pledge your support for Mass Timber

Pledge your commitment to sustainably and equitably accelerating the adoption of mass timber in construction, in Washington and nationally. You can also add your name to our distribution list to be notified of newly published resources, events, and announcements.

Washington School for the Deaf. Design by Mithun. Photo by Lara Swimmer/Esto.

Thank you to our Funding Partners

Coughlin Porter Lundeen
PCS Structural Solutions
Port Blakely
Swinerton
StructureCraft
Timberlab
PNW Ironworkers District Council
Holmes US
Perkins&Will
Seattle Office of Economic Development
Craft Contracting
Washington State Department of Commerce

Lead Washington & the Pacific Northwest Toward a Timber-Based Future

Our region has always been defined by its forests, waterways, and ingenuity. Today, we have a chance to lead the nation in reimagining how we build—with mass timber, a material that honors our region’s natural resources while advancing climate-smart innovation. By supporting MASSTAC, you help position Washington, the PNW, and the U.S. as global leaders in sustainable construction.

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