Amazon Phase VIII
Amazon Phase VIII will be built on the west side of 9th Ave. N. between Harrison Street and Thomas Street.

Amazon.com is expanding its Seattle footprint yet again.

amazonmap12.jpg
The proposed locations for Amazon’s new buildings. “Amazon Phase VII” is in blue, while “Amazon Phase VIII” is in yellow.

Vulcan, the investment arm of Microsoft co-founder Paul Allen, is planning to build two 12-story office buildings for Amazon’s South Lake Union headquarters.

The first building, which Vulcan calls “Amazon Phase VII,” will be 301,000 square-feet on the east side of 9th Ave. N. between Republican Street and Harrison Street. The 312,000 square-foot “Phase VIII” building will be just south of Phase VII on the west side of 9th Ave. N. between Harrison Street and Thomas Street.

The map to the right shows the locations, with Phase VII in blue and Phase VIII in yellow.

“Amazon’s continued growth in South Lake Union is a testament to its continued commitment to our city, helping create more jobs and contributing to the positive transformation of the neighborhood into one of our region’s most vibrant and exciting communities,” said Ada M. Healey, vice president of real estate at Vulcan.

Vulcan led development of Amazon’s first six phases, selling the campus for $1.1 billion to the online retailer last October.  These new buildings, which will cost $266 million to put up, will have approximately 4,000-to-4,500 square feet of retail space along with around 435 underground parking spots each. Construction will begin in January of next year and end sometime in late 2015, with Amazon signing a 16-year lease.

Amazon Phase VII
Amazon Phase VII will be on east side of 9th Ave. N. between Republican Street and Harrison Street.

Amazon is more or less taking over the South Lake Union area, a once gritty section of the city north of the downtown core. The new buildings would be in addition to Amazon’s plans for the Denny Triangle neighborhood, which would include three skyscrapers totaling some 3.3 million square feet. As part of that development, Amazon is looking to build a massive spherical greenhouse-like structure.

Amazon also recently expanded with a new 10-year lease for about 140,000 square feet at the Metropolitan Park North building. And it has begun work on the 380,000-square-foot project of two connected buildings and open space along Westlake and 9th Avenues, between Mercer and Republican Streets.

The company continues to expand as its worldwide headcount is on the rise, as the chart below shows. The company actually topped 91,000 employees at the end of the first quarter, and likely will top Microsoft in worldwide headcount this quarter, though a large percentage of that employee base works in fulfillment.

amznemployees

Previously on GeekWire: Images: Amazon.com wants to build a massive biosphere in Seattle (perfect for workers and mature trees)

Like what you're reading? Subscribe to GeekWire's free newsletters to catch every headline

Job Listings on GeekWork

Find more jobs on GeekWork. Employers, post a job here.