419 Occidental Building

Seattle, WA

Early 20th Century building in Seattle’s Pioneer Square neighborhood receives a sustainable shell and core renovation

  • 42-kWh photovoltaic array installed on-site which will produce over 3% of the building’s core and shell energy use
  • Additional embodied carbon impacts avoided by reusing over 70% of the existing building structure
  • Ongoing sustainable operations policies developed for Green Housekeeping and Solid Waste Management
  • Will save over 32% in energy cost savings annually
  • LEED platinum® certified

O’Brien360 provided LEED contractor assistance and LEED Project management on the multi-phase shell and core renovation of 419 Occidental, a historic Pioneer Square building and one of three early 20th Century buildings slated for modernization as part of the Railspur Redevelopment Project. The seven-story structure received a full overhaul that included seismic and structural work, a new roof deck, and a glass-enclosed staircase in the north alleyway. The project achieved LEED-Platinum certification in March of 2022.