Anthropic Subleases Office Space at 181 Fremont Street
The rapidly growing AI firm is securing additional footprint in downtown San Francisco from Meta Platforms.
Updated on Oct. 27, 2026 in Remote Work
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Anthropic has subleased 30,000 square feet of office space from Meta Platforms within the 181 Fremont Street tower in San Francisco. This expansion adds to the company's significant presence in the South of Market district as its business operations continue to scale.
Why it matters
The move reflects Anthropic's rapid growth as the company manages a surge in both revenue and personnel. The sublease further consolidates the firm's footprint near its future headquarters at 300 Howard Street.
Anthropic reported $16.3 billion in revenue for the first half of 2026, a substantial increase from $1.2 billion in the same period of 2025. The company's workforce also grew to 5,300 employees as of September 2026, up from 941 at the end of 2024.
The players
Anthropic
An artificial intelligence company that has experienced significant expansion in revenue and headcount.
Meta Platforms
The technology conglomerate that serves as the master leaseholder for the office space at 181 Fremont Street.
The details
The new office space occupies the fifth and sixth floors of the 57-story building at 181 Fremont Street. Meta, which originally leased the building's 400,000-square-foot office component in 2017, placed the space on the sublease market in 2023.
Timeline
Meta leased the office component of 181 Fremont Street in 2017.
Meta listed the 181 Fremont Street space for sublease in 2023.
Anthropic reported $1.2 billion in revenue during the first half of 2025.
Anthropic reported $16.3 billion in revenue during the first half of 2026.
Meta's master lease at 181 Fremont Street is set to terminate in March 2031.
Market Landscape
This deal highlights the evolving occupancy dynamics within the South of Market commercial real estate market. It underscores a shift where emerging AI firms are capitalizing on sublease opportunities left by legacy technology companies.
The expansion signals a continued commitment to physical office space in downtown San Francisco, which may contribute to increased local commercial activity. Residents and business owners in the area may see higher foot traffic in the vicinity of 181 Fremont Street and 300 Howard Street.
The takeaway
Large-scale subleasing activity remains a primary trend in the San Francisco office market as companies consolidate space. Firms like Anthropic are increasingly utilizing these agreements to facilitate rapid growth in central business districts.
Further reading
For more on the changing office environment, see Remote Work.
Source note: This article includes information reported by The Real Deal New York.
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