8 county-level rules, plus city-specific rules for 3 cities in Solano County, California.
Verified from official government sources
Recreational fire pits are allowed in unincorporated Solano County under the California Fire Code, which the County adopted as part of the 2025 California Building Standards Code. Open recreational fires must be kept at least 25 feet from structures and combustibles; manufactured portable outdoor fireplaces must be at least 15 feet away. All fires must be constantly attended.
Solano County Code Section 6.3-20 (adopting California Fire Code 2025)
6.3-20 (a) The California Building Standards Code, 2025 Edition... is adopted by reference as the Building Code of the County of Solano, incorporating Parts 1, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, known collectively as California Building Standards Code and respectively as California Administrative Code, California Building Code, California Residential Code, California Electrical Code, Cali...
All fireworks are illegal in unincorporated Solano County. The Solano County Code (Chapter 12.5, pyrotechnics) makes it unlawful to possess, use, discharge, sell, or offer for sale any fireworks in the unincorporated area, including state-approved 'Safe and Sane' items bought in cities like Dixon, Rio Vista, or Suisun City.
Solano County Code Section 12.5-10 (Ord. No. 1435)
12.5-10 Prohibition on the sale or possession of fireworks and other pyrotechnics. It shall be unlawful for any person, firm or corporation to possess, use, discharge, offer for sale, or sell any fireworks, firecrackers, torpedoes, or other pyrotechnics in the unincorporated area of the County of Solano... Any person, firm, corporation, or other entity violating any of the provision of this ord...
Property owners in fire-prone unincorporated Solano County must maintain defensible space under California Public Resources Code 4291, which requires 100 feet of clearance around structures in State Responsibility Areas and Very High Fire Hazard Severity Zones. Requirements include an ember-resistant zone, a lean-clean-and-green zone, and a reduced-fuel zone enforced by CAL FIRE and local fire districts.
Outdoor burning of vegetation in unincorporated Solano County is tightly regulated by air and fire authorities. The northeastern county (Vacaville, Dixon, Rio Vista) is governed by Yolo-Solano AQMD; the western/southern county by Bay Area AQMD. Burning is allowed only on approved burn days, with local fire-district authorization, and only for dry vegetative material.
Solano County Code Section 12.5-20 (Ord. No. 1435)
12.5-20 Fire protection district--Clearance or order to clear land of flammable material. The county officer charged with fire protection in the unincorporated area of Solano County or that officer's designated agent may call to the attention of the applicable fire protection district the existence of flammable material which endangers public safety by creating a fire hazard, and the fire prote...
Much of unincorporated Solano County - especially the western hills near Vacaville, English Hills, and Green Valley - lies in Fire Hazard Severity Zones designated by CAL FIRE. The Office of the State Fire Marshal released updated Local Responsibility Area maps for Solano County on February 24, 2025, triggering defensible-space and wildfire-resistant building requirements that the County now enforces.
Smoke alarms and carbon monoxide detectors in unincorporated Solano County are required by California law, not a unique county ordinance. California Health & Safety Code 13113.7 and 17926 require State Fire Marshal-approved smoke alarms in every dwelling and CO detectors in homes with fuel-burning appliances or attached garages, enforced through the adopted California Building and Fire Codes.
Backyard recreational fires are allowed in unincorporated Solano County under the adopted California Fire Code, but open burning of yard waste and trash is separately controlled by the air districts. Recreational wood fires must stay 25 feet from structures and be attended; pile burning of vegetation is allowed only on approved burn days with fire-district authorization.
Solano County Code Section 6.6-40(c) (Ord. No. 1668)
6.6-40 (c) It shall be unlawful to use any of the following prohibited fuels in a wood burning appliance: (1) Garbage; (2) Treated wood; (3) Plastic products; (4) Rubber products; (5) Waste petroleum products; (6) Paints; (7) Organic paint solvents; (8) Coal; (9) Glossy or colored papers; (10) Particle board; (11) Salt water driftwood; (12) Plywood; (13) Hazardous Wastes.
Residential propane storage in unincorporated Solano County follows the California Fire Code (Chapter 61) and NFPA 58, which the County adopted in its 2025 code. Above-ground tanks under 125 gallons must be at least 10 feet from buildings; larger tanks need greater setbacks. Containers may not be stored in basements or below-grade spaces, and large quantities require a fire-department permit.
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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