As its fellow tech giants jockey for space in downtown San Francisco, Google has signed another office lease in the southern Financial District, The Chronicle has learned.
The Mountain View company is taking an additional 57,299 square feet at Hills Plaza at 2 Harrison St., according to real estate data company CoStar. That brings the total in the complex, where Google has had an office since 2007, to more than 400,000 square feet.
Google did not respond to a request for comment. Architecture firm Gensler occupied the space before recently moving to 45 Fremont St. A Morgan Stanley investment fund owns Hills Plaza.
Google is also in talks to sublease space from Salesforce, two sources said. The potential deal could be up to 228,000 square feet at Rincon Center at 101 Spear St. No contract has been signed.
Salesforce is one of the few large tech tenants vacating space as it consolidates workers into Salesforce Tower, which opened in January, and adjacent buildings. Salesforce, the city’s largest tech employer with 7,500 employees, is also subleasing space at the Landmark building at One Market Plaza.
Google’s expansion follows office leases by Facebook, Dropbox and other fast-growing tech companies, which have broken records for size and made San Francisco one of the priciest and tightest office markets in the country.
The office vacancy rate in San Francisco’s southern Financial District, which includes the area around the Transbay Transit Center, is 4.6 percent, down from 6 percent in the first quarter, according to CoStar.
“The new development has pretty much been snatched up,” said Jesse Gundersheim, CoStar’s San Francisco market economist. “Opportunity like sublease space from Salesforce is pretty rare.”