Fire pit rules in San Mateo County, CA — also called outdoor burning, recreational fire, or open flame ordinances — cover fuel types, clearances, and when burning is allowed.
Wood-burning fire pits in unincorporated San Mateo County are banned on Spare the Air Alert days under BAAQMD. Hillside and fire hazard zone properties face additional restrictions from CAL FIRE and San Mateo County Fire.
Under BAAQMD Regulation 6, Rule 3, wood-burning fire pits, chimineas, and fire bowls are banned on Spare the Air Alert days county-wide. In unincorporated hillside, canyon, and coastal areas with high fire risk, additional restrictions from San Mateo County Fire Department and CAL FIRE may apply. Propane or natural gas fire features may be permissible but require review. Properties in fire hazard severity zones should consult with the San Mateo County Fire Division (650-363-4991).
Illegal burning: $100 to $1,000. Causing fire: criminal charges possible. CA PRC §4423: up to $1,000 + 6 months.
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See how San Mateo County's fire pit rules rules stack up against other locations.
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