Bill > HB1458

This bill aims to reduce embodied carbon emissions in buildings by establishing new requirements for construction projects over 100,000 square feet (excluding school district construction). The bill provides three compliance pathways for projects: (1) maintaining at least 45% of an existing building's structure and envelope, (2) demonstrating a reduction in early life-cycle stage (A1-A3) emissions for covered products, or (3) using a whole building life-cycle assessment to compare embodied carbon emissions against a reference building. The state building code council will develop rules and standards, consulting with various state agencies and experts. By the 2030 building code, projects must achieve a 30% reduction in embodied carbon emissions, with incremental steps toward this goal in the 2027 and 2030 code cycles. The bill also requires design professionals to track and report embodied carbon emissions data to a public database maintained by the Department of Commerce, which will provide educational resources and conduct random audits. Key terms like "embodied carbon emissions" are defined as the greenhouse gas emissions associated with a construction product's entire lifecycle, from extraction to disposal, measured in carbon dioxide equivalent units.

Budget and Finance, Government Affairs

https://app.leg.wa.gov/billsummary?BillNumber=1458&Year=2025&Initiative=false