5 county-level rules, plus city-specific rules for 1 city in Napa County, California.
Verified from official government sources
Napa County does not set a single numeric grass-height limit, but Chapter 8.36 declares as a public nuisance the presence of dry grass, weeds, brush, or other combustible vegetation within the 100-foot defensible space around any structure and on undeveloped parcels of one acre or less.
Napa County Code Sec. 8.36.030 (Definitions)
'Weeds' means and includes any of the following: 1. Weeds that bear seeds of a downy or wingy nature; 2. Sagebrush, chaparral, and any other brush or weeds that attain such hard growth as to become, when dry, a fire hazard; 3. Weeds and grasses that are otherwise noxious; 4. Poison oak when the conditions of growth are such as to constitute a menace to the public health; or 5. Dry grass, stubbl...
Napa County Code Chapter 8.36 requires property owners to maintain 100 feet of defensible space around structures, including pruning tree portions that extend within 10 feet of any chimney or stovepipe outlet and removing dead or dying wood from trees adjacent to or overhanging buildings.
Napa County Code Sec. 8.36.060 (Duty to maintain defensible space and abate public nuisances)
Property owners shall maintain a defensible space as defined by this chapter and in the Defensible Space Guidelines. The following conditions within the unincorporated area of Napa County are declared to be nuisances and shall be abated by the owner of each parcel or property where such conditions exist, at the [owner's] sole expense: A. The presence of prohibited materials within the defensibl...
Napa County Code Chapter 18.108 (Conservation Regulations), as amended by the 2019 Water Quality and Tree Protection Ordinance, requires permits for tree removal in stream setbacks and sensitive watershed areas, imposes mitigation ratios for cut oaks, and requires retention of at least 70% of pre-1993 tree canopy in sensitive domestic water supply drainages. Note: Measure C (Oak Woodland Initiative, 2018) narrowly failed at the ballot.
Napa County Code Chapter 8.36 (the Napa County Fire Hazard Abatement Ordinance) declares uncontrolled growth and accumulation of weeds, combustible vegetation, green waste, and rubbish a public nuisance, requires owners to abate within 14 days of an order, and authorizes county abatement at the owner's expense with lien recovery.
Napa County Code Sec. 8.36.020 (Purpose of provisions - Public nuisance findings)
Pursuant to and in accordance with the determination made and the authority granted by the state under Section 14930 of the Health and Safety Code, the Napa County board of supervisors makes the following findings and declarations: A. The uncontrolled growth and/or accumulation of prohibited materials on parcels as defined in this chapter is hereby found to create a condition that is a fire haz...
Napa County Code Chapter 18.118 (Water Conservation Regulations for Landscape Design) implements the state Model Water Efficient Landscape Ordinance and requires a Landscape Documentation Package for qualifying new and rehabilitated landscapes in the unincorporated county.
Napa County Water Efficient Landscaping Application and Guidance, Section A1 (Applicability) - implementing Napa County Code Chapter 18.118
Use the table below to determine if the Water Efficient Landscape Ordinance (WELO) applies to your project. 1. Does the project require a building permit from the County? 2. Is new or rehabilitated landscaping either provided and/or required as part of the building plans or conditions of approval for the project? 3. Is this a public agency, private development, or developer installed project wi...
1 cities in Napa County have their own landscaping rules rules. Each link goes to that city's dedicated page with code citations.
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