For more information, call the City and County of San Francisco Planning Department at (415) 558-6378. It's advisable to also visit them online to access "Zoning Maps" as well as specific information on "Zoning District Summaries."

If you suspect a zoning violation in your area, you can call one of the following San Francisco agencies:

• To report zoning violations concerning occupancy use, call the Department of Building Inspection's General Building Inspection division (GBI) at (415) 558-6088. 
  
  
• To file a complaint concerning illegal construction in progress, call the GBI first to obtain a case number. Then call the Department of Building Inspection at (415) 558-6096. You will be directed to the building inspector for your district. Inspectors have limited office hours; if you leave a voice mail message include an address and description of the alleged violation. You may also confidentially leave your own name and number for a follow-up call.
  
  
• To complain about completed illegal construction, call the Department of Housing Inspection (DHI) at (415) 558-6220. You will be given a case number and directed to the Housing Inspector in charge of your district.  Housing Inspectors are also in their offices only during limited hours. If you reach a voice mail, leave a clear message stating the address and description of the alleged violation. You should also leave your name and number for a follow-up call.