8 county-level rules, plus city-specific rules for 6 cities in Riverside County, California.
Verified from official government sources
Riverside County Ordinance 695 requires property owners to abate weeds, dry grass, and combustible vegetation that create a fire hazard. Abatement notices typically require grass and weeds to be mowed to 3-4 inches or less by a published deadline each spring (usually May 1). Non-compliance leads to county-contracted abatement with cost liens.
Tree trimming on private property is generally unregulated in unincorporated Riverside County except where trees overhang county road right-of-way, block sight distance, or are within utility easements. Heritage and native oak protections apply in designated hillside areas. Trees within 10 feet of chimneys must be trimmed under Public Resources Code §4291.
Cal. Pub. Res. Code Sec. 4291 (Defensible Space)
4291. (a) A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall at all times do all of the following: (1) (A) Maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line, except as provided in subparagraph (B). The amount of fuel modification necessary sha...
Riverside County does not have a blanket heritage-tree ordinance for private property, but oak woodlands and riparian trees in Multi-Species Habitat Conservation Plan (MSHCP) reserves are protected. Tree removal during grading under Ordinance 457 may require biological survey. Desert native plants (Joshua trees, palms) are protected by state law on any project requiring discretionary approval.
Riverside County Ordinance 695 authorizes the Fire Department to declare weeds and dry vegetation a public nuisance and order abatement. Ordinance 725 treats overgrown vegetation that harbors rodents or impairs neighboring properties as a general nuisance. Invasive weeds (yellow star thistle, arundo) are subject to Ag Commissioner quarantine and abatement.
Unincorporated Riverside County is served by multiple water districts — Eastern Municipal, Western Municipal, Coachella Valley Water District, Desert Water Agency, Rancho California, and others. Under California Water Code §10608 (SB X7-7) and the AB 1668/SB 606 framework, all enforce permanent outdoor water efficiency rules. Typical restrictions limit landscape irrigation to 2-3 days per week and prohibit runoff.
California Model Water Efficient Landscape Ordinance (DWR)
Model Water Efficient Landscape Ordinance Model Water Efficient Landscape Ordinance Low water using plants, mulch, and efficient irrigation save water while making habitat for pollinators. DWR/2015 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 c...
Rainwater harvesting is legal in California under the Rainwater Capture Act of 2012 (AB 1750) and encouraged in Riverside County for landscape irrigation. Rooftop collection of up to 5,000 gallons typically does not require a permit. Larger cisterns, pressurized systems, or indoor uses require permits and California Plumbing Code compliance.
California Water Code Section 10574 (Part 2.4. Rainwater Capture Act of 2012 - AB 1750)
Use of rainwater collected from rooftops does not require a water right permit pursuant to Section 1201. (Added by Stats. 2012, Ch. 537, Sec. 2. (AB 1750) Effective January 1, 2013.) Water Code - WAT DIVISION 6. CONSERVATION, DEVELOPMENT, AND UTILIZATION OF STATE WATER RESOURCES [10000 - 12999] PART 2.4. Rainwater Capture Act of 2012 [10570 - 10574]
Riverside County encourages native and drought-tolerant landscaping through the Model Water Efficient Landscape Ordinance (MWELO) adopted via Ordinance 859. New landscapes over 500 sq ft (2,500 sq ft for owner homeowners) must meet climate-appropriate plant lists, efficient irrigation, and soil management. Desert natives have strong protections under state law.
Artificial turf is permitted in unincorporated Riverside County and actively encouraged by local water agencies as part of turf-replacement programs. California Civil Code §4735 prohibits HOAs from banning artificial turf as a drought-tolerant option. Installation must meet drainage standards and, in some planned communities, design review.
California Civil Code Section 4735 (Article 1. Protected Uses - Common Interest Developments)
(a) Notwithstanding any other law, a provision of the governing documents or architectural or landscaping guidelines or policies shall be void and unenforceable if it does any of the following: (1) Prohibits, or includes conditions that have the effect of prohibiting, the use of low water-using plants as a group or as a replacement of existing turf. (2) Prohibits, or includes conditions that ha...
6 cities in Riverside County have their own landscaping rules rules. Each link goes to that city's dedicated page with code citations.
8 verified rules • Artificial Turf, Grass Height Limits
8 verified rules • Artificial Turf, Grass Height Limits
8 verified rules • Artificial Turf, Grass Height Limits
8 verified rules • Artificial Turf, Grass Height Limits
8 verified rules • Artificial Turf, Grass Height Limits
8 verified rules • Artificial Turf, Grass Height Limits
See every category we cover for Riverside County — parking, noise, fences, fires, animals, pools, and more.
Riverside County Ordinance Hub →