Market Square

1355 Market Street
San Francisco, CA 94103

Award-winning Market Square consists of two buildings joined by a landscaped plaza spanning an entire block along Market Street between 9th and 10th Streets in San Francisco’s Mid-Market.  The original building, formerly known as the Western Furniture Exchange and Merchandise Mart, is an Art Deco icon.  We redeveloped the 1355 Market Street Building while maintaining its classic architecture and, at the same time, offering modern and state-of-the-art conveniences.  The 80,000 square foot floor plates and large blocks of contiguous space allow occupants extraordinary opportunities and virtually unlimited configurations to create customized work environments.  The adjacent 1 TENth building was also renovated with a new lobby, glass curtainwall, and connected skyway to 1355 Market.

Market Square has served as the catalyst for the resurgence of the Mid-Market area—it is Twitter’s world headquarters and more than 4,500 new residential units have risen in recent years.  The location is connected to SOMA’s commercial district, Hayes Valley’s restaurants and shops and is across Market Street from Civic Center Plaza, Davies Symphony Hall, War Memorial Opera House, the Asian Art Museum, Bill Graham Civic Auditorium and a short walk from the city’s theater district.  Several forms of public transportation, including the Civic Center BART station located steps away, serve the property.


Property Facts


Adaptive reuse

Original construction


1937 – 1974

Redevelopment completed



  1,080,000 sf

No. of stories

  10 and 11

Floor plates

  35,000 – 80,000 sf