Colusa County, CA Property Maintenance: Vacant Lot Maintenance (2026)

Colusa County does not have a single all-purpose "vacant lot" maintenance ordinance, but two County provisions apply. Under Chapter 7A (Ord. No. 437), "every owner of any vacant lot or parcel" must remove weeds in excess of three inches high; for a vacant lot abutting a parcel with an improvement, removal must create a 50-foot clearance from that improvement (Sec. 7A-3(b)). Chapter 7A specifically targets out-of-county and out-of-state owners who let weeds accumulate as a "seasonal and recurring nuisance." Separately, Chapter 42 treats illegally dumped solid waste, tires, construction debris, appliances and abandoned material on any parcel as a public nuisance (Sec. 42-2(j)(2)), and Chapter 32 makes it unlawful to allow solid or liquid waste to accumulate on any lot or parcel other than an approved disposal site (Sec. 32-2(a)(8)). Chapter 12B (Ord. No. 370) declares abandoned, wrecked or inoperative vehicles stored on private property — including vacant lots — a public nuisance that promotes blight; these are abated by the sheriff. These rules apply only in the unincorporated county; vacant lots inside the cities of Colusa and Williams follow those cities' codes.