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SF’s great AI lease-up continues with 57K sf inked in SoMa

Startups leasing more offices as giants like OpenAI, Anthropic grow at rapid pace

Harvey CEO Winston Weinberg with 201 Third Street exterior

Another artificial intelligence company is stretching out in San Francisco and expanding its office footprint. 

Legal AI startup Harvey has leased two additional floors at 201 Third Street, bringing its total occupancy in the building to roughly 150,000 square feet, the San Francisco Business Times reported. The growth comes less than a year after Harvey initially signed on to occupy approximately 93,000 square feet in the South of Market building.

Kilroy Realty, landlord at 201 Third Street, has struggled with vacancy at the building, according to the Business Times. At the end of last year, the building was 56 percent occupied. Kilroy CEO Angela Aman said the firm offered Harvey pre-built, furnished spaces in the building. 

AI firms are often attracted to move-in-ready offices like that, and Kilroy has been working to meet AI companies’ needs when trying to lease out property, Aman said per the Business Times.

Harvey’s expansion at 201 Third Street comes as the company itself experiences rapid growth. The firm recently raised $200 million at an $11 billion valuation. Late last year, the company was valued at $8 billion; a few months earlier in mid-2025, its value was placed at $5 billion, according to the Business Times. The firm was founded in 2022 and is backed by the OpenAI Startup Fund. 

As the AI boom continues, companies both large and small have been snapping up office space. OpenAI’s footprint in the city just crossed 1 million square feet with its latest lease in MIssion Bay last month. Last week, Anthropic added another 100,000 square feet to its office collection with a three-floor lease at 400 Howard Street. That followed a full-building, 420,000-square-foot lease at 300 Howard earlier this year.

The giants aren’t the only ones spreading their wings in San Francisco. Last month, Reflection AI leased two floors at 140 New Montgomery Street in South of Market totaling 25,000 square feet. Shortly after that, Databricks, which has been in expansion mode across the Bay Area over the past year, signed a lease for an additional 90,000 square feet at 1 Sansome Street, bringing its total presence in the tower to roughly 240,000 square feet.

Chris Malone Méndez

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