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The perfect space. In the perfect neighborhood.

We launched the transformation of the South Lake Union neighborhood just over a decade ago. In the years since, it’s become a hub for vibrant, innovative companies. And today our commitment to providing modern, flexible spaces in the area continues. Take our new Arbor Blocks and 111 Westlake properties, for example. They offer a range of spaces – from smaller footprints all the way up to 390,000 SF.

There are a lot of developers building in the South Lake Union neighborhood now. But when it came time to sign on the dotted line, PATH felt most comfortable going with the company that started it all. - Steve Davis, President and CEO, PATH

Be in good company.

Plenty of the region’s leading companies call South Lake Union home. Now’s the time to join them.

111 Westlake

Seattle’s number one address.


111 Westlake

Seattle’s number one address.

Located at the intersection of Westlake and Denny, the most notable feature of this building is the location itself. With easy access to both the downtown retail and financial core, as well as to all the new restaurants, shops and residences of South Lake Union, the address is hard to beat.

But there are plenty of other amenities as well – including nine high-speed elevators, multiple telecom infrastructure options (with fiber optics available), 13-foot floor-to-ceiling heights and levels of natural day-lighting up to 90%.


  • 420,000 SF
  • 20,000 SF of ground-level retail
  • 23,000-25,000 SF floor plates
  • Targeting LEED Gold
  • Adjacent to streetcar line

Arbor Blocks

A lush, urban space surrounded by sweetgum trees.


Arbor Blocks

A lush, urban space surrounded by sweetgum trees.

These two, uniquely shaped buildings located at 300 and 333 8th Ave. North create a lush urban living room while providing nearly 400,000 SF of Class-A office space with supporting retail and amenities. Fully mature sweetgum trees provide a canopy along the street while creating plenty of inviting outdoor spaces where employees and others can gather. Meanwhile, the distinctive “woonerf” street design creates a pedestrian-friendly environment by slowing down cars, reducing noise and fostering a more park-like feel.


Arbor Blocks East
  • 200,000 SF
  • 34,000-39,000 SF floor plates
  • Targeting LEED Gold

Arbor Blocks West
  • 190,000 SF
  • 30,000-35,000 SF floor plates
  • Targeting LEED Gold