Aliso Viejo, CA Property Maintenance: Vacant Lot Maintenance (2026)

Aliso Viejo adopts the 2025 California Fire Code in Chapter 13.04 and rewrites section 304.1.3, Vegetation, for the City of Aliso Viejo. The amended text says weeds, grass, vines or other growth that is capable of being ignited and endangering property shall be cut down and removed by the owner or occupant of the premises. The duty falls on the owner or occupant, so a vacant lot with no occupant is the owner's job.

The amendment also points to two outside standards. Vegetation clearance requirements in urban-wildland interface areas follow Part 7, the California Wildland-Urban Interface Code. The type, amount, arrangement and maintenance of vegetation in a fuel modification area, interior slope or similarly hazardous area follow OCFA Guideline C-05, the Orange County Fire Authority vegetation management guideline for new construction, fuel modification plans and maintenance programs.

The nuisance chapter adds rules aimed at unimproved ground. Section 8.24.010(E) declares a nuisance any trailers, campers, boats or motor vehicles present on vacant property, and broken or discarded furniture and household equipment stored on vacant property for more than seven calendar days, such as stoves, refrigerators and water heaters. Subsection D covers vegetation that harbors rats and vermin or endangers traffic, and subsection C sets a seven calendar day limit on refuse and waste.

Enforcement of the fire code piece is spelled out in section 113.4.2 as added by the city: persons maintaining premises who permit any fire or life safety hazard to exist on premises under their control are guilty of an infraction, and those who fail to take immediate action to abate a hazard when ordered or notified by the chief or a duly authorized representative are guilty of a misdemeanor.