One Market Plaza
building complex in San Francisco, California, USA
One Market Plaza is a complex of three office buildings at 1 Market Street along the San Francisco Embarcadero. The historic 11-story Southern Pacific Building, also known as "The Landmark", was completed in 1916, and incorporated into the development in 1976 that includes the 43-storey 172 metres (564 feet) Spear Tower, and the 27-storey, 111 metres (364 feet) Steuart Tower. At over 1.5 billion pounds, the complex is considered the heaviest development in San Francisco.
History
The plaza was first owned by Morgan Stanley Real Estate and Paramount Group. Later in 2007, Paramount Group purchased a half-interest from Morgan Stanley for $720 million. By 2014, Paramount controlled a 51% stake and the rest by Blackstone.
The complex was renovated in 1996 by the architect firm César Pelli & Associates Architects. In Spring 2014 a new renovation began, which was completed in 2016.
After Southern Pacific's merger with Union Pacific, the Landmark building was sold to The Martin Group in 1997 for $50 million, after plans by another developer to convert the building to a hotel fell through. An $88 million renovation brought modern amenities such as air conditioning and hot water to the building.
“One Market Plaza” enters the record as building complex in San Francisco, California, USA. Crown Archives preserves that source wording while asking what Market, Plaza and building can confirm, complicate or overturn.
Why this record matters
“One Market Plaza” is worth following because a concise public description often conceals a longer documentary argument. Here, Market, Plaza and building provides the most credible route into that argument.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Jun 7, 2026. The linked authority identifier is Q29054158. Authority coordinates are 37.793, -122.395. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1916, 1976, 2007 and 2014.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
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Three-step research path
- Establish the record: confirm the title “One Market Plaza”, its source revision and the description used here.
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Questions for further research
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This entry incorporates text from “One Market Plaza” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.