Use the current Washington Clean Buildings Tier 1 schedule to identify the relevant deadline, official portal work, and provider services to research.
Washington Commerce defines Tier 1 covered buildings as buildings where the applicable nonresidential, hotel, motel, and dormitory floor area exceeds 50,000 gross square feet, excluding parking. Federal and qualifying tribal buildings are excluded from the state requirement.
The first June 1, 2026 reporting date has passed. Owners in later size cohorts can use the remaining lead time to confirm the official record, establish reliable benchmarking, identify the applicable compliance pathway, and assign portal and documentation responsibilities before requesting provider proposals.
A date alone does not define a provider scope. Confirm coverage and the compliance pathway with Commerce, then separate data, analysis, documentation, implementation, and owner-submission roles.
The published Tier 1 deadline was June 1, 2026. Commerce advises covered owners who have not started to begin now. Use current official guidance for extensions, exemptions, and submission steps rather than assuming a late-filing path.
The published reporting date is June 1, 2027. Confirm the covered-building record, portal access, benchmarking data, pathway, and any required professional roles before treating a proposal as a complete compliance scope.
The published reporting date is June 1, 2028. Early preparation can expose missing utility data, building-detail errors, capital planning needs, and unclear owner or consultant responsibilities while there is still time to resolve them.
A Seattle building can face both Washington Clean Buildings and the city Building Emissions Performance Standard. Track the two programs separately; a state submission does not automatically complete Seattle reporting.
Short answers grounded in public program and federal guidance. The written scope still controls each engagement.
Commerce publishes June 1, 2026 for covered buildings over 220,000 square feet; June 1, 2027 for buildings over 90,000 through 220,000 square feet; and June 1, 2028 for buildings over 50,000 through 90,000 square feet.
No. Commerce applies program definitions, exclusions, floor-area rules, and exemptions. Use the official building record and current guidance rather than estimating coverage from a listing or tax record alone.
Yes. Washington Clean Buildings and Seattle BEPS are separate programs. A Seattle owner should track the requirements, portals, dates, and professional roles for both.
This directory is independent and cannot determine what a particular building must do.