Stone 34, a 130,000 sq. ft. mixed-use commercial office building, exceeded the aggressive performance standards of Seattle’s Living Building Pilot. The requirements of this program include achieving at least three of the seven petals in the "Living Building Challenge" plus showing a reduction in annual energy usage by 75% when compared to CBECS data, a reduction in potable water usage by 75% and re-use of at least 50% of storm water that hits the site. The Living Building Pilot requires validated performance after 12 continuous months of operation, and both the design team and ownership team faced financial penalties if the building failed to meet the program targets. This paper will explain the "bookend approach" that the design and ownership team used to ensure that the occupied building met the performance requirements.
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