Owners and property managers in Seattle with non-residential buildings greater than 50,000 square feet should check that their building(s) 2011 annual energy performance was reported to the City of Seattle. Since October 2011, most buildings of this size have been required to report. A list of buildings larger than 50,000 square feet that are subject to the ordinance is now available on the website, www.seattle.gov/EnergyBenchmarking.