A building that has some glass doors and some white and silver stairs that lead up to the entrance o

Property details

Building Size (SQ FT)


Office Size (Sq Ft)


Retail Size (Sq Ft)


Floor Plates (SQ FT)


Number of Floors


Year Built


Year Renovated



Welton Becket

One Post is one of San Francisco's most prominent office towers featuring 424,000 square feet of premier office space, panoramic city and bay views, and unrivaled access to mass transit. The property's 'Main and Main' location at the junction of Market, Post and Montgomery Streets provides quick entree to numerous nearby amenities - including renowned Union Square two blocks away.

A view down at a square with some buildings around it and there is also a building with a rooftop garden next to it.
A very tall and older brown office building that has a red sidewalk around the base of it.
A hallway in an office building that has some elevators on either side of it and some white walls.
A large office building that is located in a downtown area and there is a brick sidewalk that is located around the front.
The inside of an office building at the lobby with chairs and a reception desk with art on the wall behind it.
A lobby in a building that has a white couch and a table that has two orange chairs at it.
Two orange chairs that are sitting in a lobby around a couple of small tables on a white tile floor.


Unrivaled location with direct access to Montgomery BART/Muni Station

Dramatic new lobby and outdoor plaza transformation

Brand-new tenant fitness center

On-site retail


Ratings and Certifications

2022 WELL Health-Safety rated

2022 WELL Health-Safety rated

LEED EB O&M Platinum certified

LEED EB O&M Platinum certified

The Location

One Post Street icon-external-site-link
1 Post St
San Francisco, CA 94104-5203
United States of America

Additional Resources

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Contact Us


Paul Mitchell
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