Outdoor burning rules in South San Francisco, CA — also called the burn ban, open burning, or fire restriction ordinance — set when you can burn yard waste, debris, or run a recreational fire.
Open burning is banned in South San Francisco under BAAQMD Regulation 5. Wood-burning devices (fireplaces, stoves, fire pits) are prohibited on Spare the Air Alert days under BAAQMD Regulation 6, Rule 3.
South San Francisco is within the BAAQMD jurisdiction. BAAQMD Regulation 5 bans virtually all open burning in the Bay Area. BAAQMD Regulation 6, Rule 3 prohibits wood-burning fireplaces, stoves, pellet stoves, and outdoor fire pits on Spare the Air Alert days. The 2025 rule lowered the PM2.5 threshold to 25 µg/m³, increasing expected alert days to 19–41 per year. New construction in the Bay Area cannot include wood-burning devices. Property sellers must provide a Residential Wood Burning Disclosure.
Illegal burning: $100 to $1,000 city fines. AQMD violations: $100 to $1,000/day. PRC §4423: up to $1,000 + 6 months imprisonment.
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Side-by-side rule comparisons with other cities in San Mateo County.
See how other cities in San Mateo County handle outdoor burning.
See how South San Francisco's outdoor burning rules stack up against other locations.
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