Grass Valley, CA Fence Regulations: Neighbor Fence Rules (2026)

There are two layers to neighbor fence questions in unincorporated Nevada County. First, the county's Sec. 12.04.106 (Fencing and Hedges) controls how tall a fence or hedge may be in each yard and protects vehicle sight distance along roadways; a fence on or near a shared line must still meet the height limit for that yard and zoning district. Second, the financial and shared-responsibility side of a boundary fence is governed by California law, not the county code. Under California Civil Code Section 841, adjoining landowners are presumed to share equally in the benefit of a fence dividing their properties and, unless they agree otherwise in writing, are presumed equally responsible for the reasonable costs of construction, maintenance, or necessary replacement. A landowner who intends to incur such costs must give each affected adjoining owner 30 days' prior written notice that includes the proposed work, the estimated cost, and the presumption of equal responsibility. The equal-cost presumption can be overcome by a preponderance of the evidence showing that equal responsibility would be unjust (for example, where one owner's actions caused the damage or where one owner does not benefit). Disputes over cost-sharing are civil matters between neighbors, not enforced by county code enforcement.