Landscaping Rules in Simi Valley, CA (2026)
6 verified landscaping rules for Simi Valley, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Grass Height Limits
Simi Valley requires residential property owners to maintain their landscaping in a neat and orderly condition. Overgrown grass, weeds, and unmaintained vegetation are considered property maintenance violations subject to Code Enforcement action.
Simi Valley Grass Height and Lawn Maintenance
Some RestrictionsTree Trimming
Simi Valley requires property owners to maintain trees so they do not encroach on public sidewalks, streets, or neighboring properties. The city has a tree preservation ordinance protecting certain native and significant trees from unauthorized removal.
Simi Valley Tree Trimming Standards
Some RestrictionsCal. Public Resources Code § 4291(a)(2)-(3) (Tree clearance from chimneys; trees adjacent to buildings)
(2) Remove that portion of a tree that extends within 10 feet of the outlet of a chimney or stovepipe. (3) Maintain a tree, shrub, or other plant adjacent to or overhanging a building free of dead or dying wood. (4) Maintain the roof of a structure free of leaves, needles, or other vegetative materials. (5) Before constructing a new building or structure or rebuilding a building or structure da...
Tree Removal & Heritage Trees
Simi Valley has a tree preservation ordinance that protects native oaks and significant trees from unauthorized removal. Permits are required to remove protected trees, and replacement planting or in-lieu fees are typically required.
Simi Valley Tree Removal and Preservation Ordinance
Heavy RestrictionsWeed Ordinances
Simi Valley requires property owners to remove weeds and maintain lots free of overgrown vegetation that creates fire hazards or unsightly conditions. The annual weed abatement program targets vacant and undeveloped parcels.
Simi Valley Weed Abatement Requirements
Some RestrictionsCal. Food & Agricultural Code § 5004 (Noxious weed definition)
“Noxious weed” means any species of plant that is, or is liable to be, troublesome, aggressive, intrusive, detrimental, or destructive to agriculture, silviculture, or important native species, and difficult to control or eradicate, which the director, by regulation, designates to be a noxious weed. In determining whether or not a species shall be designated a noxious weed for the purposes of p...
Water Restrictions
Simi Valley enforces water conservation regulations for landscape irrigation consistent with California's Model Water Efficient Landscape Ordinance. The city periodically implements mandatory watering restrictions during drought conditions.
Simi Valley Water Conservation Landscaping Rules
Some RestrictionsCalifornia Model Water Efficient Landscape Ordinance (MWELO)
About 40% of the water Californians use at home is used outdoors. Large water savings can be gained by efficient landscape design, installation, management, and maintenance. This is accomplished by choosing climate adapted plants, improving soil conditions, using, and maintaining high efficiency irrigation equipment and managing the irrigation schedule to fit the plants water needs as they are ...
Composting
Simi Valley supports residential composting consistent with California SB 1383 organic waste diversion requirements. Backyard composting is allowed on residential properties with proper containment and maintenance to prevent nuisance conditions.
Simi Valley Composting and Organic Waste Rules
Few RestrictionsCalRecycle SB 1383 Short-Lived Climate Pollutant Reduction Strategy
California's Organic Waste Reduction SB 1383 Short-Lived Climate Pollutant Reduction Strategy Landfilled food and other organic waste rotting in landfills emits methane climate pollution contributing to California's hotter summers, more frequent droughts, and more wildfires. Feed People and Fight Climate Change Fight Climate Change by Recycling Organic Waste To reduce methane pollution and othe...
Looking for Ventura County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Simi Valley city rules.
Landscaping Rules in Ventura County →