Antioch, CA Landscaping Rules: Native Plants (2026)

Xeriscape and low-water landscaping are actively encouraged in Antioch through a combination of state regulation and regional incentive programs. California's Model Water Efficient Landscape Ordinance (MWELO), codified at California Code of Regulations Title 23, Division 2, Chapter 2.7, applies to new and renovated landscapes over 500 square feet requiring a permit; it requires water-efficient plant selection (with Water Use Classification of Landscape Species list preference for Low and Very Low categories), hydrozone-based irrigation design, soil amendments, and mulch coverage of at least 3 inches in non-turf areas. California Assembly Bill 1572 (2023) prohibits the use of potable water to irrigate 'non-functional turf' on commercial, industrial, and institutional properties, with a phased compliance deadline of January 1, 2027-2031 depending on site type; residential lawns are exempt from AB 1572, though drought-stage restrictions may still apply. No city permit is required for residential homeowners to replace a lawn with drought-tolerant plantings, permeable pathways, or decomposed granite, so long as drainage patterns are not worsened. Contra Costa Water District offers turf-replacement rebates typically $1-$2 per square foot (subject to annual budget) for qualifying conversions, along with rebates for smart controllers, rain barrels, and high-efficiency sprinklers. HOA and CC&R restrictions on drought-tolerant landscaping are void under California Civil Code 4735 as long as plants are adequately maintained.