While tech giants Apple and Amazon are expanding their footprint far from their West Coast bases in California and Seattle, Facebook is growing closer to home. The company has created three work hubs in the San Francisco Bay area that total at least one million square feet each, The Mercury News reports.

Facebook could employ 19,000 or more at the sites located in Fremont, Sunnyvale, and its homebase of Menlo Park, CA.

It has signed leases for 18 buildings with 1.04 million square feet in Fremont, and another with a developer for 1 million square feet of Sunnyvale offices in three buildings.

The expansions could reduce commuting time for some Facebook workers, always a problem in California, where people pay attention to the traffic the way others do to the weather.

The Sunnyvale expansion also gives Facebook more access to the San Jose area workforce.

Facebook, which has a major data center facility in Western North Carolina, isn’t alone in expanding near Silicon Valley. Apple, based in Cupertino, and Google, based in Mountain View, have also established offices in San Jose, Sunnyvale, Redwood City and Santa Clara.

Reports suggest Apple is about to establish a major new hub at the Southern end of Research Triangle Park, and the Triangle is on Amazon’s list of 20 finalists for its massive HQ2.

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