Yorba Linda, CA Fire Regulations: Wildfire Zones (2026)

Yorba Linda's hillside terrain toward Chino Hills places much of the city inside a state-mapped wildfire zone, and Municipal Code Section 8.44.010 designates the areas shown on Exhibit A to Ordinance No. 2012-973 as Very High Fire Hazard Severity Zones under Government Code Section 51179(a). Property inside those zones, and the adjoining Wildland-Urban Interface Area, is subject to added requirements written into the City's own amendments to the California Fire Code at Chapter 15.08, enforced by the Orange County Fire Authority under Section 15.08.020. Section 15.08.050 amends Section 304.1.3 to require that weeds, grass, vines or other ignitable growth be cut down and removed by the owner or occupant, with fuel modification zones and slopes held to OCFA's Vegetation Management Guideline C-05.

New construction adjoining hazardous vegetation must comply with fuel modification requirements added at Section 324, and Section 325 lets the fire code official require clearing flammable vegetation within ten feet of the improved edge of any roadway. Outdoor wood fires are barred within a fuel modification zone, a Wildfire Risk Area or the Wildland-Urban Interface Area under Section 307.6.2.1, and Section 305.6 bars any outdoor wood fire citywide once sustained winds exceed 8 mph with humidity under 25 percent or a red flag condition is declared, with a hard 20 mph cutoff for any fuel type.

Section 327.1 requires a 30-foot cleared buffer, a shovel and a charged fire extinguisher on hand before welding, cutting or grinding work in a Wildfire Risk Area. Violating these Fire Code amendments is an infraction, escalating to a misdemeanor for failing to abate a hazard on order, under Section 113.4.2.