Tier 2 compliance is due July 1, 2027·8 months away·Only 6.7% of covered buildings had complied as of September 2026Start your assessment →
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Official Resources

The authorities that govern the Tier 2 requirement. We cite them so owners can verify what we tell them. The standard itself runs to several hundred pages across the statute, the rule, ASHRAE Standard 100 and the Washington State Department of Commerce's guidance; this is where it lives.

Statute and rule

CitationSubject
RCW 19.27A.200Definitions, including "Tier 2 covered building"
RCW 19.27A.220Early adoption incentive program
RCW 19.27A.240Utility participation and incentive payment
RCW 19.27A.250Tier 2 requirements, deadline and penalties
WAC 194-50Clean Buildings rule, including the Qualified Energy Manager designation (194-50-030)

Department of Commerce

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