Anthropic Leases Entirety of 300 Howard in San Francisco’s “AI Alley”

DivcoWest, a DivCore Capital company, and Blackstone Real Estate said Monday that Anthropic has leased the entirety of 300 Howard St., a 466,000-square-foot, 25-story office tower, and 342 Howard, a historic 18,000-square-foot building. The downtown San Francisco properties within “AI Alley” are owned and managed by a joint venture between DivcoWest and Blackstone Real Estate.

Anthropic’s commitment is reportedly among the largest in the city’s history. The company currently occupies space in two nearby buildings at 500 and 505 Howard.

“San Francisco’s resurgence is being led by AI, and Anthropic’s decision to make a full-building commitment [and expand its presence] reinforces our shared belief in San Francisco’s future,” said Gregg Walker, president of DivcoWest Real Estate Asset Management.

DivcoWest and Perform Properties, Blackstone Real Estate’s retail and office portfolio company, worked with JLL vice chairman Chris Roeder, senior managing director Ted Davies and SVP Carlye Parker to represent ownership in the lease negotiations. Felipe Gomez-Kraus and John Diepenbrock of JLL represented Anthropic.

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