Energy Benchmarking

Seattle's Energy Benchmarking Law (Seattle Municipal Code 22.920) requires owners of non-residential and multifamily buildings (greater than 20,000 square feet) to track energy performance and annually report to the City of Seattle. Owners must report each calendar year of benchmarking data by June 1st of the following year. See the Seattle Energy Benchmarking Fact Sheet for more information. 

The City has sent warning letters to owners of buildings that were not in compliance for reporting year 2024 as of the June 1st deadline. Owners of non-compliant buildings have until 9/1/2025 to achieve compliance before penalties are assessed.

Check Reporting Year 2024 Compliance for Benchmarking

The City of Seattle annually publishes building energy and emissions performance data from more than 3,600 of Seattle's largest nonresidential and multifamily buildings representing 375 million square feet at data.seattle.gov and through the Seattle Energy Benchmarking Map to facilitate transparency in the market and spur demand for energy efficiency.

Beware of Third-Party Benchmarking Communications

Please be advised that communications currently circulating from soliciting third-party service providers may contain inaccurate information regarding compliance status, deadlines, and Seattle benchmarking program requirements. Official email communications from the City of Seattle regarding benchmarking compliance will be sent via a seattle.gov email address. Notification letters, warning letters, and Notices of Violation sent through the postal service will prominently feature City of Seattle branding and will not request payment for services to complete the benchmarking process.