AI infrastructure and tooling
LangChain holds 70,000 leased square feet in San Francisco on the public record
LangChain has 2 San Francisco locations as of October 2026, 1 of them in Financial District/South Beach. 1 has a published size; the other 1 count as zero, so the total is a minimum. Rank 14 of 47 by observed square feet.
- Leased square feet where public
- 70,000
- Locations, October 2026
- 2
- First recorded presence
- January 2023
- Rank by observed SF
- 14 of 47
Footprint
Observed square feet held, month by month
The line steps up when a deal is reported and steps down when a location's registration closes. The first deal with a public figure is a sublease of 70,000 square feet at 303 2nd Street, reported in June 2026.
Source: DataSF business registrations and DBI permits, SEC filings, press. Observed square feet only. Logos are trademarks of their owners.
View data table
| From | Observed SF |
|---|---|
| January 2019 | 0 |
| June 2026 | 70,000 |
Locations
LangChain’s San Francisco locations, October 2026
| Address | Neighborhood | Recorded from | Observed SF | Type | Map | Sources |
|---|---|---|---|---|---|---|
| 303 2nd Street | Financial District/South Beach | June 2026 | 70,000 | Sublease | On the map | Link |
| 42 Decatur Street | South of Market | January 2023 | No public figure | On the map |
Source: DataSF business registrations and DBI permits, SEC filings, press. Observed square feet only. "Recorded from" is the date of the registration or the press report of a signing, not a move-in date.
| Address | Recorded from | Ended | Observed SF |
|---|---|---|---|
| 501 2nd Street | May 2025 | May 2025 |
Lease tape
Leases and subleases with public square feet
Square feet as each source states them. An expansion that restates a location's total shows as a second row at the same address.
| Reported | Address | Type | SF | Prior occupant | Source |
|---|---|---|---|---|---|
| June 2026 | 303 2nd Street | Sublease | 70,000 | Sony Interactive Entertainment | Link |
Who replaced whom
Space that changed hands
- LangChain took 70,000 square feet at 303 2nd Street that Sony Interactive Entertainment held (sublease, June 2026). Source
Part of San Francisco AI tenants, a register of 223 AI companies at 271 locations built from public records. See the full leaderboard, the interactive map and the methodology.
Report a correction · Get updates when the register is refreshed
Company names and logos are trademarks of their owners and are shown only to identify them.