Deep Green Sustainability
Stone34 is the first commercially developed building, and second building overall, to complete the City of Seattle’s Living Building Pilot program (LBPP)¹. By meeting and surpassing rigorous sustainability benchmarks during a 12-month performance period, Stone34 has proven how privately owned buildings can deploy advanced green building features without sacrificing industryacceptable investment returns.
Purchased by Unico Properties and Laird Norton Properties in 2014, the 132,923 square foot building was developed by Skanska USA and designed by LMN Architects to be delivered with features that would support pursuit of LBPP, including a state-of-the-art chilled-beam mechanical system and a 65,000-gallon rainwater cistern that collects and reuses stormwater.
Unico Sustainability managed the LBPP process, partnering with McKinstry for measurement and verification services, enabling operational adjustments to optimize performance during the building’s performance period of 9/1/2014 to 8/31/2015.
A design and operations review performed by the International Living Future Institute confirmed that Stone34 surpassed its targets in energy by 15% and water by 27%. The building has an ENERGY STAR score of 100 and has two LEED Platinum certifications: Building Design + Construction and Existing Buildings Operations + Maintenance.
1. Stone34 used the Deep Green pathway in the LBPP.