Recently Certified: 1101 Westlake

Recently Certified: 1101 Westlake

1101 Westlake located in the South Lake Union neighborhood recently achieved LEED Silver under the Core and Shell Rating System. This six-story building includes 150,000 SF of flexible office space that has been leased out by Facebook.


Owner: Invesco

Development: Holland Construction

Architectural Design: Mulvanny G2 Architects

Location: Seattle, WA

Certification: LEED Silver

Services: LEED 2009 Consulting for Core & Shell / Energy Modeling



  • Located in the dense South Lake Union Neighborhood within walking distance of many restaurants, retail amenities and steps from Lake Union Park
  • Immediate access to bus lines and near South Lake Union Street Car
  • Total water saved: 356,140 gallons per year
  • Energy efficient base building systems that include total savings of 418,547 kWh per year of electricity and 150,677 pounds of CO2 per year
  • 84% of the waste generated from construction was diverted from the landfill
  • Low-emitting materials were used throughout the building
  • Exterior building design allows for daylight and unobstructed views of Lake Union from every floor