Fire pit rules in San Mateo, CA — also called outdoor burning, recreational fire, or open flame ordinances — cover fuel types, clearances, and when burning is allowed.
Outdoor wood-burning fire pits are banned on Spare the Air Alert days throughout San Mateo under BAAQMD Regulation 6, Rule 3. With 19–41 annual alert days expected, backyard wood burning is severely restricted.
BAAQMD Regulation 6, Rule 3 applies to all wood-burning devices including outdoor fire pits, chimineas, and fire bowls. On Spare the Air Alert days — which occur primarily November through February but are possible year-round — any use of wood-burning fire pits is illegal in San Mateo. Propane or natural gas fire features may be permissible but require review with the Fire Division. Contact San Mateo Fire Department for specific guidance.
Illegal burning: $100 to $1,000. Causing fire: criminal charges possible. CA PRC §4423: up to $1,000 + 6 months.
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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 fire pit rules.
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