San Francisco's Fire Regulations: The Rules That Matter
Every city handles fire regulations a little differently. In San Francisco, California, there are 6 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.
Smoke Detectors
San Francisco Housing Code Section 1301 and California Health & Safety Code 13113.7 require working smoke alarms in every bedroom, outside each sleeping area, and on every floor. Hardwired with battery backup is required for new construction; 10-year sealed battery alarms acceptable for existing single-family homes.
Key details: Requirements: Required in every bedroom, outside sleeping areas, every floor. Hardwired +: Hardwired + battery backup for new construction/remodels. Residential: 10-year sealed battery OK for existing single-family. Requirements: CO alarms required if fuel appliance, fireplace, or attached garage. Alarms Older: Alarms older than 10 years must be replaced.
Outdoor Burning
San Francisco requires a Fire Department permit before anyone ignites or maintains an open outdoor fire anywhere in the city and county, under the Business and Tax Regulations Code.
Key details: Permitting agency: San Francisco Fire Department. Governing section: Bus. & Tax Regs. Code § 1.16. Enacted: Ord. 274-64 (1964). Coverage: Citywide/countywide, no exemptions listed.
Igniting or maintaining an open outdoor fire without first obtaining a Fire Department permit violates Business and Tax Regulations Code Article 1, Section 1.16, subjecting the responsible person to the code's general permit-violation penalties.
Fireworks
San Francisco bans firing or discharging any fireworks anywhere in the city and county, with public displays allowed only by joint written consent of the Fire Marshal and Chief of Police.
Key details: Governing law: Police Code § 1290. Personal fireworks: Banned citywide, no exceptions. Public displays: Fire Marshal + Police Chief consent required. Scope: Applies city and county-wide.
Discharging fireworks without the required joint Fire Marshal/Police Chief consent violates Section 1290; enforcement falls to SFPD and the Fire Department, who may seize fireworks and cite violators.
Compared to other cities, San Francisco takes a harder line on fireworks. The enforcement and penalty structure reflects that.
Wildfire Zones
San Francisco requires a Fire Department operational permit before anyone uses a torch or other open-flame device inside a designated wildfire risk area, covering hillside and open-space zones prone to wildland fire spread.
Key details: Governing section: SF Fire Code § 105.5.37. Permit type: Operational permit (Fire Department). Applies to: Torches, open-flame devices in wildfire risk areas. Related permit: Hot work in wildfire risk area (§105.5.25).
Operating without the required permit violates the Fire Code and can result in citation, an order to stop work, and permit revocation by the Fire Department's Bureau of Fire Prevention.
Brush Clearance
San Francisco Fire Code Section 4906 requires defensible space and vegetation management on properties adjacent to wildland-urban interface zones, including Mount Davidson, Twin Peaks, and Glen Canyon Park edges.
Key details: Zone 1 distance: 30 feet. Zone 2 distance: 100 feet. State authority: PRC Section 4291. Inspector: SFFD Fire Prevention.
Failure to clear dry vegetation, dead trees, or accumulated debris in defensible space zones, especially before fire season, prompts SFFD notice and potential abatement charges.
Compared to other cities, San Francisco takes a harder line on brush clearance. The enforcement and penalty structure reflects that.
Propane Storage
San Francisco requires a Fire Department operational permit to store or use LP-gas, with a narrow exception for one 20-pound cylinder kept outside a residential building for cooking.
Key details: Governing section: SF Fire Code § 105.5.30. Exempt limit: One 20 lb. cylinder outside residence. Cooking device exception: One LP-fueled cooking device per building. Permit type: Fire Department operational permit.
Storing or using LP-gas beyond the permitted exception without a Fire Department operational permit violates the Fire Code and can lead to citation, permit revocation, or an order to remove noncompliant equipment until a permit is obtained.
The Bottom Line
San Francisco is tougher than many cities when it comes to fire regulations. Out of the 6 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in San Francisco, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.
Keep in mind that San Francisco can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.