Washington Mass Timber Accelerator

Building a stronger, more resilient future, together.

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

Washington Mass Timber SChools

Mass timber schools for student health & forest health.

Evergreen High School. Design by Bassetti Architects / HMC Architects.

Washington Mass Timber 2025 Annual Support

Advancing Mass Timber for our Sustainable Future

Gold Creek Valley, Washington. Photo by U.S. Forest Service PNW Region

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

What is Mass Timber?

Mass timber is, at once, a material, a system of building, and a new paradigm for construction that is climate sustainable, beautiful, and efficient.

Washington is ready to advance the use of mass timber in construction. Mass timber can be used for everything from multifamily housing to civic buildings, office and industrial buildings, and more.

The Bush School New Upper School. Design by Mithun. Photos by Lara Swimmer.
The Bush School New Upper School. Design by Mithun. Photo by Lara Swimmer/Esto.
Initiatives

Building Better Schools with Mass Timber

Blending stories from the classroom with insights from forestry and design, this short film highlights the sustainability, resilience, and natural beauty of mass timber construction—and its connection to responsible forest management. As communities across the region face the urgent need to replace aging school infrastructure, the film poses a timely question: What if the next generation of schools could support both student success and forest health?

Mass Timber Schools

Resources & Events

How to Mass Timber

Steel-Timber Hybrid Buildings: Case Studies

CTBUH

This book explores the evolution of material usage in high-rise buildings, noting that hybrid structures have come to dominate the world’s tallest buildings. It provides an in-depth discussion of the rise of steel-timber hybrid structures, highlighting their architectural appeal, sustainability, and cost-effectiveness.

Read Report

Save the Date

Thu
23
Jul

July 23, 2026

2026 Industrialized Housing Summit

Event Details & RSVP
Wed
29
Jul

July 29, 2026

Climate Smart Wood Group Webinar: Northwest Forestry Tour

Event Details & RSVP
Tue
11
Aug

August 11, 2026

AIA Seattle Mass Timber Committee Meeting

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

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