OSLU is as exceptional as its neighborhood

Onni South Lake Union will not just be one of Seattle Lake Union’s most noteworthy office projects, but one of Washington’s. Here, Onni is re-creating the Class-A office with an architecturally bold design that will offer office tenants a unique and modern work environment.

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Onni South Lake Union will include:

  • ± 935,951 SF new office
  • 2 office buildings
  • OSLU West - 17 floors
  • OSLU East – 16 floors
  • ± 30,618 - 31,500 SF floor plates
  • 12’6” floor-to-ceiling height & window height
  • 3 Skybridges serving as connection points between both office buildings
  • Thermal energy sharing system that reduces the carbon footprint