The USBID continues to provide clean and safe services to the district under the City & County of San Francisco’s updated Shelter-In-Place policy. For more information about curb-side pick-up, click here.

Cleaning & Safety Services
[Effective 6/04/2020] Member Services is now resumed to 6:30am – 10:30pm daily, with Overnight Security Services available between 10:00pm – 6:00am.  Clean and safe ambassadors will operate between 5:30am – 11:30pm. Pressure washing and the ATLV will operate between 9:00pm – 5:30am daily. To report a clean or safe incident between 6:30am – 10:30pm, please contact Member Services at 415-781-4456 or To report a safe incident between 10:00pm – 6:00am, please contact Legion Security at 415-724-2909 and mention your membership with the USBID. 

The City & County of San Francisco is currently in Phase 2a of the re-opening plan. Business hours may be affected. Please check local listings. Retailers open for touchless shopping and restaurants open for take-out are available. Continue practicing social distancing and maintaining property safety protocols like hand washing and wearing a facial mask. We look forward to seeing you soon. For on-going San Francisco alerts, text: COVID19SF to 888-777.

Cafe Mason at Union Square, San Franciso
Cafe Mason at Union Square, San Franciso
Cafe Mason at Union Square, San Franciso
Cafe Mason at Union Square, San Franciso

Cafe Mason


Open 24 Hours

320 Mason Street | Directions

Most food we serve at Cafe Mason is homemade, prepared from the scratch with quality ingredients. We carefully select our own produce daily, organic whenever available to make a wide variety of California cuisine dishes served for breakfast, lunch and dinner. We're open 24 hours a day, so stop by to sample our seasonal crepes, fresh pastas and classic diner dishes.