Colusa County, CA Ordinances (2026)

Unincorporated Colusa County bars trucks and trailer combinations over 12,000 lb GVW from streets signed 'no parking,' caps gross weight on unpaved county highways at 16,000 lb, and…

Unincorporated Colusa County has no general overnight street-parking ban, but on streets posted with signs no vehicle may park more than 10 minutes between 2 a.m. and 6 a.m. (except…

Unincorporated Colusa County has no blanket residential-street ban on RVs or boats, but any vehicle left on a street over 120 consecutive hours is prohibited, large truck-trailers are…

In unincorporated Colusa County only the road commissioner (under board authority) may place curb markings, which carry standard meanings: red (no stopping at any time), yellow (timed…

Colusa County declares abandoned, wrecked, dismantled, or inoperative vehicles a public nuisance. On private property, Chapter 12B sets a 10-day-notice abatement process run by the…

Unincorporated Colusa County prohibits parking in front of any public or private driveway and bars parking near wheelchair access ramps. Where a driveway has no curb cut, the visibly…

Unincorporated Colusa County uses yellow curbs for freight/passenger loading and white curbs for passenger loading, establishes bus zones, and requires off-street freight-loading…

Unincorporated Colusa County requires vehicles to park within 18 inches of the right-hand curb, prohibits angle parking unless approved and striped, bars double parking, and lets the…

Converting a garage into living space in unincorporated Colusa County changes its use. If the conversion creates a separate dwelling it is an 'accessory unit' under Section 44-4.10 of…

Unincorporated Colusa County regulates ADUs as 'accessory units' in Section 44-4.10 of the Zoning Code (Chapter 44). The county caps a unit at 1,200 sq ft (up to 2,500 sq ft on…

Unincorporated Colusa County's Zoning Code defines a 'tiny home' as a structure meeting Appendix Q of the 2019 California Residential Code. A tiny home (park trailer) outside an…

Unincorporated Colusa County's Zoning Code treats a carport as a 'private garage' / accessory structure. A carport must meet the residential accessory-structure setbacks - 20 feet in…

Unincorporated Colusa County has an outdoor lighting standard in Section 44-3.30 of the Zoning Code aimed at reducing light trespass and glare and maintaining views of the night sky…

Unincorporated Colusa County's Zoning Code controls light trespass through Section 44-3.30.010, which requires all outdoor lighting to be located, shielded, and directed so that no…

In unincorporated Colusa County, campaign and political signs are temporary signs allowed without a permit under Section 44-3.50.040(b)(2) of the Zoning Code. They may not exceed 32…

Unincorporated Colusa County's Zoning Code has no sign category specifically for garage or yard sale signs. Such temporary signs fall under the general Sign Regulations of Section…

In unincorporated Colusa County, holiday decorations tied to any national, local, or religious holiday go up without a sign permit, but only for a limited window: no more than 45…

Under Table 44-3.50-1 of the Colusa County Zoning Code, a permitted business window sign in unincorporated Colusa County can cover up to 25 percent of any continuous window area, must…

Unincorporated Colusa County allows electronic changeable message displays only on wall, off-site, pole, and monument signs in commercial, industrial, and agricultural zones, and only…

The Colusa County Zoning Code does not cap residential lot coverage with a percentage. It controls building bulk through setbacks and maximum structure height, uses Floor Area Ratio…

Colusa County's Zoning Code sets minimum building setbacks by zone. In the main residential zones, primary structures need a 20-foot front setback (15 feet in R-4), a 15-to-20-foot…

The Colusa County Zoning Code caps building height by zone. In the residential zones, the maximum structure height is 30 feet in Rural Residential, Single-Family, and Two-Family zones…

Grading or development on natural slopes over 15 percent anywhere in unincorporated Colusa County must follow the erosion-control standards in Zoning Code Section 44-5.40.050: cut…

In unincorporated Colusa County, agricultural-zone development that needs a permit or administrative permit must produce no net increase in off-site drainage flows, including peak…

Unincorporated Colusa County applies a dedicated Flood Management (F-M) zoning classification, under Zoning Code Section 44-2.60.10(B), to land outside river channels that has flooded…

Unincorporated Colusa County's Zoning Code ties its landscaping standards to state defensible-space law. Section 44-3.10.020(F) requires a defensible space or zone around a building or…

In unincorporated Colusa County, a driveway serving a parcel on a slope over 15 percent cannot simply connect to a public road: Zoning Code Section 44-5.40.070(F) requires the owner to…

In unincorporated Colusa County, the Zoning Code governs land use regardless of any private CC&Rs. Section 44-1.60.030(D) states the Zoning Code applies to all land uses and…

Unincorporated Colusa County does not set a single general park-closure hour, but two rules apply: a countywide minor curfew (Section 14-15.1) bars anyone under 18 from public places…

In unincorporated Colusa County, Zoning Code Chapter 44 divides farmland into five agricultural zones: Foothill Agriculture (F-A), Exclusive Agriculture (E-A), Upland Conservation…

In unincorporated Colusa County's agricultural zones, Zoning Code Section 44-2.20.20(B)(a) caps noise from permitted and administratively-permitted uses at 60 decibels measured at the…

Vehicle repair shops are shut out of unincorporated Colusa County's residential zones almost entirely: Table 44-2.30-3 allows 'Vehicle Repair, Service and Maintenance' only in the…

Colusa County bars adult business establishments from locating within 1,000 feet of Interstate 5 or within 2,000 feet of any residential zone, house of worship, school, park, library…

In unincorporated Colusa County, Zoning Code Section 44-3.10.020(B) discourages water-thirsty lawns on new landscape projects. Water-intensive turf should stay under 25 percent of a…

Unincorporated Colusa County's Zoning Code steers decorative water features toward recirculating and recycled water. Section 44-3.10.020(D) calls for fountains, ponds and waterfalls on…

Unincorporated Colusa County's Zoning Code doesn't set a numeric weed-height limit, but Section 44-3.10.020(G) calls for landscaped areas on qualifying projects to be kept free of…

Unincorporated Colusa County requires covered landscape projects to water on a schedule. Zoning Code Section 44-3.10.070(B) mandates that landscape irrigation run only between 8:00…

In unincorporated Colusa County, a home occupation may display only one sign, sized under Section 44-3.50's sign rules. The business must stay fully enclosed within the dwelling or an…

Running a business from home in unincorporated Colusa County requires an administrative permit and compliance with Zoning Code Section 44-4.90, which caps the operation at 25% of a…

In unincorporated Colusa County, a small family day care home is treated exactly like any other residence and needs no special zoning permit. A large family day care, child care…

Colusa County's residential and transitional zones run livestock and poultry through an animal density point system rather than a flat headcount. Domestic animals aren't allowed at all…

In Colusa County's residential and transitional zones, households may keep up to four small domestic pets like dogs and cats. Parcels over 10,000 square feet may keep six, and parcels…

Parades and other public gatherings on public property in unincorporated Colusa County skip the standard Temporary Use Permit but still need sign-off: Zoning Code Section…

The Zoning Code has no provision named 'street fair,' but its temporary-use rules govern the same kind of outdoor vendor gathering: farmer's markets need a Temporary Use Permit and are…

Unincorporated Colusa County caps recreational lodging by guestroom count, not headcount. A lodging facility with five or fewer guestrooms is treated as a single-unit residential…

Unincorporated Colusa County has no ordinance labeled 'short-term rental.' Instead, guest lodging under 30 days runs through the Zoning Code's recreational lodging facility rules at…

Every recreational lodging operator in unincorporated Colusa County, from farmstays to bed and breakfasts, is subject to the county's Uniform Transient Occupancy Tax under Chapter 18A…

Colusa County has no dedicated data-center ordinance. In unincorporated areas a server facility is an industrial use, permitted by right in the M-1, M-2, and Research and Development…

Colusa County caps noise at 50 dBA at night and 55 dBA daytime at the nearest home's property line under its noise ordinance (Chapter 13, Ord. No. 730). A data center's cooling systems…

Colusa County has no ordinance specific to cryptocurrency or blockchain mining. A commercial mining operation is treated as a data center or industrial use, permitted by right in the…

In unincorporated Colusa County, no building permit may be issued until the proposed work complies with the Zoning Code. County Code Section 44-1.50.010 makes it unlawful to establish…

In unincorporated Colusa County, garage sales and yard sales held in residential zones are exempt from the Temporary Use Permit the Zoning Code otherwise requires for temporary uses…