Part of Vulcan’s largest and most active project – the redevelopment of the South Lake Union neighborhood – Block 44 adds a five- and six-story office building, totaling 380,700 square feet, to Amazon’s ongoing global headquarters expansion. The two buildings are connected by a glass canopy featuring a Spencer Finch art installation, which covers a public crossblock with water features, outdoor seating and landscaping. Phase VI also features 18,000 square feet of ground-level retail space.

Block 44 utilized a unique dewatering system to meet the challenge of excavation near the water table. The enterprising system not only removed water but also provided near- and long-term stability, creating a cost-effective sustainable solution for handling, disposal and recycling of water.


Vulcan Real Estate


ZGF Architects, IA Interior Architects


374,000 SF office | 18,000 SF retail | 200,000 SF garage

Year Completed




News + Recognition


2015 Private Building $50M - $100M

AGC Build Washington Awards

2015 Architectural/Decorative

WACA Excellence in Concrete

2015 Exterior Commercial

NWCB Outstanding Projects of the Year

2015 Office/Retail/Mixed Use

ENR Northwest's Best Projects

2016 Merit Award in General Design [over $500,000]

WASLA Professional Awards

Thanks to the collaborative preconstruction process, what we got was the best value and the best design, not to mention the best energy performance of any similar sized building in our portfolio.

Jim Broadlick, Senior Director, Real Estate Design and Construction Vulcan Real Estate