Rohnert Park, CA Landscaping Rules: Weed Ordinances (2026)

Chapter 13A (Abatement of Hazardous Vegetation and Combustible Material) of the Sonoma County Code, adopted as Ordinance No. 6148, makes it the duty of every owner and occupant of improved and unimproved parcels in unincorporated Sonoma County to maintain their property to reduce wildfire risk. Section 13A-4 imposes the duty to abate hazardous vegetation and combustible material consistent with the 2019 California Fire Code, California Public Resources Code Section 4291, and Chapter 13A. Defensible space must be maintained in a 100-foot radius from each home (or to the property line) and 10 feet from roads and driveways. Required actions include removing dead and dying vegetation and plant debris, removing low-growing brushy plants and ladder fuels, limbing trees 6 feet up, keeping grass cut to 6 inches (4 inches along roadways and within 10 feet of neighboring structures), and keeping a 10-foot clearance of branches around chimneys and stovepipes. Annual inspections begin in late spring; failure of a first inspection triggers a 30-day cure period, and failure of a second inspection triggers a 15-day cure or hearing-request window.