Mass Timber Federal Buildings Act

Full Title:
Mass Timber Federal Buildings Act of 2025

Summary#

This bill creates a preference for public buildings that use "innovative wood products" (often called mass timber) when the federal government buys, alters, leases, or builds public buildings. The preference requires that the wood products be procured from an innovative wood product facility located in the United States and be harvested from U.S. forestlands consistent with "responsible sources." Responsible sources means either products procured under an independent certification standard or products from places with regulatory programs or best management practices, including Federal, State, and Tribal lands. The rule applies to public buildings as defined in federal law and explicitly includes military installations. The bill directs the Administrator of General Services (called the Administrator) and the Secretary of Defense (called the Secretary) to give priority, when achievable, to innovative wood products that come from restoration practices, forest management that protects communities and critical infrastructure from catastrophic wildfire, or underserved forest owners (including Tribally owned and small family forests). Agencies must seek documentation to verify those sourcing claims. The bill also requires the Administrator, in consultation with the Secretary of Agriculture, to complete a cradle-to-gate whole-building lifecycle assessment that considers global warming potential and follows ISO 14044 and 14020 standards within 180 days of enactment. A report describing the assessment results must be submitted to Congress and made public within 180 days after the assessment is completed.

What it means for you#

  • Federal buyers (the GSA Administrator and the Secretary of Defense) must prioritize using U.S.-sourced innovative wood products in public building projects when practicable.
  • The preference applies to construction, alteration, acquisition, and leasing of public buildings, and it includes military installations.
  • Suppliers and forest owners who want to qualify should be able to show that products come from a U.S. facility and U.S. forestlands that meet the bill's "responsible sources" definitions and provide documentation when requested.
  • The bill requires a public lifecycle assessment and a report to Congress about the global warming potential of new public buildings that use these products.

Expenses#

No publicly available information on costs, appropriations, or funding for implementation is included in the bill text. The bill does set timelines for a lifecycle assessment (to be completed within 180 days of enactment) and a report to Congress (within 180 days after the assessment is completed), but it does not state how those activities will be funded.

Proponents' View#

No publicly available information.

Opponents' View#

No publicly available information.