Modesto, CA Fire Regulations: Brush Clearance (2026)

Because the City of Modesto lies on the valley floor and is served by the Modesto Fire Department within the Local Responsibility Area, properties inside city limits are typically not designated as State Responsibility Area or Very High Fire Hazard Severity Zone parcels under CAL FIRE mapping. As a result, the 100-foot defensible space requirement in Public Resources Code 4291 (which applies in SRA and Very High FHSZ Local Responsibility Area parcels) does not blanket-apply to Modesto residential lots. Owners are still required to keep parcels free of brush and dead vegetation that constitutes a fire hazard or property nuisance under the city's Property Maintenance Code at Municipal Code 9-9.509, which targets neglected or inadequately maintained landscaping, trees, hedges, lawns, shrubs, and other vegetation that is dead, decayed, diseased, debris-laden, weed-infested, overgrown, or dying from neglect, disease, pest infestation, or lack of water. A lawn area is treated as overgrown if any part exceeds 12 inches in height, and vegetation that obstructs traffic visibility, sidewalks, or rights-of-way is also a violation. The Modesto Fire Department's Fire Prevention Bureau coordinates with code enforcement on parcels that present a true fire hazard, and California Health and Safety Code section 13869 authorizes local fire authorities to adopt stricter local fire-prevention regulations. Properties on the city edge that border unincorporated Stanislaus County grasslands or river-corridor parcels should still maintain practical clearance (15-30 feet of lean-clean-green) because adjoining unincorporated land may be subject to PRC 4291 if mapped.