5 county-level rules, plus city-specific rules for 3 cities in Solano County, California.
Verified from official government sources
In unincorporated Solano County, recreational fire pits are governed by the California Fire Code (adopted by Solano County Code Chapter 6.3 — Building Standards and Codes) together with Solano County Code Chapter 12.5 (Abatement of Fire Hazards). The Yolo-Solano Air Quality Management District (YSAQMD) regulates the air-quality side and bans burning on "Don't Light Tonight" no-burn days in the northeast portion of the county (Vacaville, Dixon, Rio Vista area); the Bay Area AQMD regulates the southwest portion (Vallejo, Benicia, Fairfield, Suisun area).
All fireworks — including California-approved 'Safe and Sane' fireworks — are prohibited in the unincorporated areas of Solano County. Solano County Code Chapter 12.5 makes it unlawful to possess, use, discharge, offer for sale, or sell any fireworks, firecrackers, torpedoes, or other pyrotechnics in the unincorporated county, and a violation is a misdemeanor. Safe-and-sane fireworks legally bought in a city that permits them (Dixon, Rio Vista, Suisun City) may not be brought into or used in unincorporated Solano County.
CA Health & Safety Code §12700
12700. (a) Except as provided in Section 12702 and subdivision (b), a person who violates any provision of this part, or any regulations issued pursuant to this part, is guilty of a misdemeanor, and upon conviction shall be punished by a fine of not less than one thousand dollars ($1,000) or more than two thousand dollars ($2,000), or by imprisonment in the county jail for not exceeding one yea...
Solano County Code Chapter 12.5 (Abatement of Fire Hazards) requires owners to keep land clear of dry grass, stubble, brush, rubbish, litter, and other flammable material. In State Responsibility Area (SRA) lands, California Public Resources Code §4291 requires 100 feet of defensible space around every habitable structure; in the Local Responsibility Area's Very High Fire Hazard Severity Zones, Government Code §51182 imposes the same 100-foot standard. After the 2020 LNU Lightning Complex fires, Solano County and CAL FIRE LNU have intensified inspections.
Outdoor burning in Solano County requires authorization from one of two air districts plus, for most burns, a CAL FIRE burn permit. The Yolo-Solano AQMD regulates the northeast (Vacaville, Dixon, Rio Vista); the Bay Area AQMD regulates the southwest (Vallejo, Benicia, Fairfield, Suisun). All burning is prohibited on declared 'Don't Light Tonight' (no-burn) days, and CAL FIRE LNU declares an annual fire season closure (typically late spring through fall) during which open burning is suspended.
Much of unincorporated Solano County — including the Vaca Mountains, the western hills around Green Valley and Cordelia, the area around Lake Berryessa, and rural land north and east of Vacaville — is mapped in CAL FIRE's State Responsibility Area (SRA) and Local Responsibility Area (LRA) as Moderate, High, or Very High Fire Hazard Severity Zones (FHSZ). On February 24, 2025 the State Fire Marshal released updated LRA FHSZ maps for Solano; the County adopted them with enforcement beginning July 2025. Map zone determines defensible-space requirements (PRC §4291 / Govt. Code §51182), Chapter 7A ignition-resistant construction standards, and Real-Estate disclosure (Civil Code §1103).
3 cities in Solano County have their own fire regulations rules. Each link goes to that city's dedicated page with code citations.
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