The Seattle neighborhood populated by thousands of Amazonians everyday will soon see a major influx of Googlers.

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Starting in the mid-to-late summer, Google will begin moving into its massive campus in the South Lake Union neighborhood that has been under construction for nearly two years, a company spokeswoman told GeekWire.

The campus, first announced in 2016 and developed by Vulcan, consists of two blocks with 607,000 square feet of office space and 149 apartments. Google also leased a third nearby block just a few months ago.

The future third block brings the Google’s total office space in South Lake Union to nearly 930,000 square feet. The site could hold anywhere from 4,600 to 6,200 employees using industry standard ratios of about 150 to 200 square feet per person.

Google first arrived in the Seattle area 15 years ago and now has roughly 3,400 employees in the region today. The new campus will significantly boost its capacity to hire more engineers in a talent-rich ecosystem that also includes nearly 120 out-of-town tech companies have also established engineering centers, in addition to Microsoft and Amazon’s headquarters.

In just the South Lake Union neighborhood, Google is battling for talent with homegrown giants such as Amazon, which employs more than 45,000 people at its HQ, as well as Facebook, which is rapidly growing its own footprint in Seattle.

Even after it moves into the new campus, Google plans to hold on to several buildings it amassed in the nearby Fremont neighborhood over the years. The future of those buildings was uncertain as the development of the new campus approximately two miles away loomed, but the company said it will keep the existing offices and use the new campus to expand its headcount.

Though construction crews are getting close to handing off the first two blocks to Google, the third block is still a ways out. Construction on that block, which will include a 12-story, 322,000-square-foot structure, won’t begin until the end of this year, said Lori Mason Curran, Vulcan’s real estate investment strategy director. That block should be ready by 2021.

Google’s regional presence extends beyond Seattle proper and includes a big campus in the suburb of Kirkland, Wash. Google also recently leased some office space in Bellevue — where Amazon is also looking to grow — and is rumored to be expanding further in Kirkland.

Seattle is Google’s third largest market, behind only its Mountain View, Calif. HQ and its rapidly expanding operation in New York City.