Premier Workspaces

Private Offices, Virtual and Shared Offices in San Francisco, CA

Right in the heart of the San Francisco Financial District, One Sansome, also known as the CitiGroup Building, offers office space, virtual offices, meeting rooms, and so much more. If you're looking for a spacious office location and a prestigious business address in San Francisco, California, Premier Workspaces has the solution. And be sure to take a look at our other locations near the San Francisco area.

Location Details

The One Sansome location is the only building in San Francisco to have achieved the highest level of certification in environmental sustainability from the US Green Building Council. It is the second commercial building in its class worldwide. This exemplary building earned all the points available for the transportation, energy, and indoor water performance categories.

One Sansome is located near freeway 80, right off of Market Street, about 14 miles, or 20 minutes from the San Francisco Airport. The Oakland Airport is 20 miles away, or a 30 minute drive. There is parking available about a block away from the building, or, for those who prefer it, public transportation in the area is available, including several bus stops around the building area, and the Montgomery St. Bay Area Rapid Transit (BART) Station, which is less than half a mile from the building.

A CitiBank is located in the lobby of the building, as well as a cafe. Inside the building is also a gym, and outside of the building there is a lovely seating area. The Westfield Shopping Centre is just 7 minutes from the CitiGroup Building. Several other noteworthy buildings in the area include the Bank of America Building, the Transamerica Building, and the Ferry Building.

In addition to both short term and long term office space, Premier Workspaces also offers hourly and day offices to accommodate any business need. Our full time offices include top of the line furnishings, along with high-speed internet, personalized telephone answering service with voice mail, and mail handling and distribution.

For companies in or around San Francisco that don’t need full time office space, but still want to maintain a professional image, the CitiGroup Building also offers virtual office plans, which provide a professional business address, mail handling, personalized phone answering, and access to a conference room.

The CitiGroup Building in San Francisco offers executive suites and meeting rooms, and we can also provide our incredible team of skilled and positive professionals who are ready to take care of your secretarial, administrative, and information technology needs. You don't have to be a large corporation to enjoy working in a world class corporate environment.

Premier Workspaces is able to offer immediate occupancy, which means that if you sign a contract in the morning you can be sitting behind your new desk getting work done that same afternoon.

Premier Workspaces is one of the largest privately held providers of office space, executive suites and conference rooms in the United States, and has grown from 9 locations to over 80 by providing office space solutions to companies of all sizes, all across the country.

Location benefits of One Sansome:

  • Convenient access to the Bay Bridge and these freeways: 80 and 101
  • Direct building elevator access to BART and Muni
  • 41 Story Class A building
  • Panoramic views of the San Francisco Bay, Bay Bridge, and Golden Gate Bridge
  • Three-story historical conservatory with fountain and seating for tenant enjoyment
  • Bicycle storage and showers
  • Building is Platinum v4 Certified

Contact us today to learn more about our office plans and how Premier Workspaces can help your business grow and adapt effectively.

Hope to hear from you today!

  • Unfurnished or fully furnished offices and mini-suites
  • Conference and meeting rooms for your use
  • Convenient, prestigious locations (over 90 nationwide)
  • Short- or long-term office space rental agreements
  • 24-hour access, 7 days a week
  • On-site administrative/secretarial support
  • Mail collection and distribution
  • Fully equipped kitchen with gourmet coffee and teas
  • High-speed broadband internet
  • Local and long distance calling
  • Dedicated bandwidth
  • Offices starting at $1400 (Based on Availability)

Premier Workspaces understands your need for flexibility as business conditions evolve and your company develops. We are happy to customize a dedicated, full-time office space to meet your specific requirements and goals.Our non-branded full-service executive suites offer all the essential tools for your company to operate effectively and be successful. We provide a complete office solution, so you can focus your attention on managing and growing your business.

  • Mail receiving and handling
  • Personalized telephone answering services with voicemail
  • Private office and/or meeting room time
  • Prestigious business address (over 90 locations worldwide)
  • Virtual Office plans starting at $125

If you don’t need a dedicated, full-time physical office, but still want to establish a highly professional business presence, a Premier Virtual Office could be the right solution for you.Whether you need a full virtual office plan or just need support with mail or telephone management, we offer plans and pricing options to fit every budget.

At Premier Workspaces, we have the right solution for you.

*Pricing varies by location.

  • Convenient, prestigious locations
  • High-speed internet access 
  • Fully equipped kitchen and complimentary gourmet coffee and teas
  • Memberships starting at $29 per month


Need a professional, vibrant space? With Premier Access Memberships, you’ll get access to any of Premier's prestigious office locations at the level of usage you need. A great solution for when you just need a little coworking space time or need a private office occasionally, but want to do so in a premium workspace.

At Premier Workspaces, we have the right solution for you.

*Must have Membership; cannot be used in conjunction with other discounted rates.

Building Amenities

Private Offices icon

Private Offices

Furnished Offices icon

Furnished Offices

High Speed Internet icon

High Speed Internet

Telephone answering icon

Telephone answering

Virtual Office icon

Virtual Offices

Professional Address icon

Professional Address

Mail Collection icon

Mail Collection

Support Services icon

Support Services

Equipped Kithen icon

Equipped Kitchen

Flexible Terms icon

Flexible Terms

Manager Information

Raul Morales

Phone: +1 (415) 946-8877