Financial District/South Beach · Building 39 of 52 by AI share
AI tenants hold 11% of 405 Howard Street by observed square feet
Anthropic holds 70,000 square feet on record. DataSF lists the building at 647,908.
- AI share of building SF
- 11%
- AI square feet observed
- 70,000
- Building square feet (DataSF)
- 647,908
- AI tenants, October 2026
- 1
Tenants
AI tenants at 405 Howard Street, October 2026
| Company | Tier | Recorded from | Observed SF | Type | Sources |
|---|---|---|---|---|---|
| Anthropic | Frontier and model labs | October 2026 | 70,000 | Lease signed | Link |
Source: DataSF business registrations and DBI permits, SEC filings, press. Observed square feet only. Building square feet from the DataSF property record. "Recorded from" is the date of the registration or the press report of a signing, not a move-in date. See the building on the map.
Deals
Leases and subleases reported here
| Reported | Company | Type | SF | Source |
|---|---|---|---|---|
| October 2026 | Anthropic | Lease signed | 70,000 | Link |
Nearby
Other measured buildings in Financial District/South Beach
- 500 Howard Street: Anthropic, 85% AI
- 333 Brannan Street: Cognition, 81% AI
- 300 Howard Street: Anthropic, 77% AI
- 634 2nd Street: Glean, 61% AI
- 340 Bryant Street: Flux, 58% AI
- 201 3rd Street: Harvey, Mechanize, Inc., 37% AI
Part of San Francisco AI tenants, a register of 223 AI companies at 271 locations built from public records. See all majority-AI buildings and the methodology.
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