Wikimedia Foundation/Administrative space
This page is under construction. Please help review and edit this page. |
| Wikimedia Foundation staff and contractors participate with the volunteer community in maintaining this page's content. |
| Mailing address | One Sansome Street, Suite 1895, San Francisco, CA 94104 |
|---|---|
| Physical address | One Sansome Street, Suite 1895, San Francisco, CA 94104 |
| Headquarters | 1 October 2024 - present |
| Building constructed | 1984 |
| Building LEED Certification | Platinum |
| Total office space | 587,473 sq ft (54,578.0 m2) |
The Wikimedia Foundation's headquarters is located on the 18th floor of One Sansome Street in San Francisco in California within the United States. The building is near three other locations in San Francisco that the Foundation previously used as its headquarters. Prior to moving to San Francisco, the headquarters was located in St. Petersburg in Florida within the United States.
The majority of Wikimedia Foundation staff do not work from the headquarters in San Francisco.
One Sansome Street

One Sansome Street is a 41-story office building housed in the atrium of the former London-Paris Bank building, built in 1912. The tower construction was completed in 1984.
This location is a couple of blocks away from our previous locations at 1 Montgomery Street and 149 New Montgomery Street, is LEED certified, and allowed us to minimize our square footage while meeting our essential office space needs.
Location
One Sansome Street is located at the southeast corner of Sutter and Sansome Streets in the financial district of San Francisco, California. Its main entrance is the Citigroup Center.
Parking
Parking details to be added.
Public transit
- While further details for One Sansome will be added, most public transit routes from One Montgomery are still applicable.
- The Montgomery BART/MUNI Metro station is one block away at Market & Montgomery
- There are many MUNI bus stops within one block:
- Kearny & Geary (inbound 8/8AX/8BX, 81X; outbound 30, 38/38R, 45)
- Market & Montgomery (inbound F, 6, 7X, 9/9R, 21, 31; outbound 5/5R, 7X, 21, 31, 38/38R)
- Market & 2nd (outbound F, 6, 7/7R, 9/9R)
- Market & 3rd (inbound F, 5/5R, 6, 7/7R/7X, 9/9R, 21, 31, 38/38R)
- Kearny & Sutter (inbound 3, 8/8AX/8BX, 81X; outbound 2, 3, 30, 45)
- Post & Montgomery (inbound 2)
- Options from the Caltrain station at 4th & King:
- The 30 and 45 busses pick up on Townsend Street between 4th and 3rd and drop off at Kearny & Geary.
- The 10 bus picks up at 4th & Townsend and drops off on 2nd Street near Market
- At limited times during the morning peak, the 81X bus goes directly from 4th & Townsend to Kearny & Geary
Entering the office
Please note that the Wikimedia Foundation offices are not open to the public. You must have an invitation or appointment before your arrival.
Details on entering One Sansome will be added here.
History
One Sansome Street is the fifth location which the Wikimedia Foundation has utilized for its headquarters, and the fourth in San Francisco.
St. Petersburg, Florida
From the Wikimedia Foundation's founding in 2003 until 2007, the Wikimedia Foundation was located in St. Petersburg in Florida within the United States. The headquarters in Florida was closed on 31 January 2008.
39 Stillman Street

In 2007, the Wikimedia Foundation decided to move from its Florida office. San Francisco was chosen as the destination and the move was completed by the end of January 2008.
149 New Montgomery Street

In 2009, the Wikimedia Foundation moved approximately half a mile (under a kilometer) to 149 New Montgomery Street, and eventually occupied three floors of the building until October 2017.
1 Montgomery Street

In 2014, the Wikimedia Foundation moved moved a few blocks over to One Montgomery Street, occupying the 16th floor until September 2024.
Operating leases
| Wikimedia Foundation staff and contractors do not actively participate in maintaining this section's content. |
| Year | Lease payments |
|---|---|
| 2008 | $103,121 |
| 2009 | $119,153 |
| 2010 | $280,382 |
| 2011 | $585,114 |
| 2012 | $683,640 |
| 2013 | $1,005,896 |
| 2014 | $1,230,176 |
| 2015 | $1,291,452 |
| 2016 | $1,341,844 |
| 2017 | $1,292,625 |
| 2018 | $1,440,110 |
| 2019 | $1,489,134 |
| (Future minimum payments) | |
| 2020 | $1,481,050 |
| 2021 | $1,525,482 |
| 2022 | $1,571,247 |
| 2023 | $1,618,384 |
| 2024 | $1,666,935 |
The Wikimedia Foundation entered into a seven-year non-cancelable operating lease for its current office headquarters in San Francisco on 4 April 2017, which began on 1 October 2017 and concludes in 2024. The lease provides the Wikimedia Foundation the option to extend the lease term for one additional period of five years.

