Ventura County, CA Fence Regulations: Neighbor Fence Rules (2026)
Key Facts
- Cost-sharing law
- CA Civil Code 841 (Good Neighbor Fence Act)
- Default cost split
- Equal between adjoining owners
- Notice before incurring cost
- 30 days' written notice
- County role in cost disputes
- None (civil matter)
- Differing-grade measurement
- From higher grade (NCZO 8106-8.1.4)
- Rebuttable presumption
- Yes, by preponderance of evidence
Summary
Ventura County's zoning ordinance does not assign cost responsibility between neighbors. That is governed by California's Good Neighbor Fence Act (Civil Code 841), which presumes adjoining owners share fence costs equally and requires 30 days' written notice before incurring expense.
(a) Adjoining landowners shall share equally in the responsibility for maintaining the boundaries and monuments between them.
(b) (1) Adjoining landowners are presumed to share an equal benefit from any fence dividing their properties and, unless otherwise agreed to by the parties in a written agreement, shall be presumed to be equally responsible for the reasonable costs of construction, maintenance, or necessary replacement of the fence.
(2) Where a landowner intends to incur costs for a fence described in paragraph (1), the landowner shall give 30 days' prior written notice to each affected adjoining landowner. The notice shall include notification of the presumption of equal responsibility for the reasonable costs of construction, maintenance, or necessary replacement of the fence. The notice shall include a description of the nature of the problem facing the shared fence, the proposed solution for addressing the problem, the estimated construction or maintenance costs involved to address the problem, the proposed cost sharing approach, and the proposed timeline for getting the problem addressed.
(3) The presumption in paragraph (1) may be overcome by a preponderance of the evidence demonstrating that imposing equal responsibility for the reasonable costs of construction, maintenance, or necessary replacement of the fence would be unjust. In determining whether equal responsibility for the reasonable costs would be unjust, the court shall consider all of the following:
(A) Whether the financial burden to one landowner is substantially disproportionate to the benefit conferred upon that landowner by the fence in question.
(B) Whether the cost of the fence would exceed the difference in the value of the real property before and after its installation.
Full Breakdown
The Non-Coastal Zoning Ordinance sets fence heights, setbacks, and permit rules but does not address who pays for a boundary fence shared by two neighbors. That question is governed by California Civil Code section 841, the Good Neighbor Fence Act, which applies statewide including unincorporated Ventura County. Under section 841, adjoining landowners are presumed to share an equal benefit from any 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 of the fence.
A landowner who intends to incur costs for a shared fence must give 30 days' prior written notice to each affected adjoining landowner. That notice must describe the nature of the problem, the proposed solution, the estimated cost, the proposed cost-sharing approach, and the proposed timeline. The equal-cost presumption can be rebutted in court by a preponderance of the evidence, after which a judge may order a lesser share or no contribution based on the circumstances. 4) addresses fences between lots at different grade levels: where grades differ, height is measured from the higher grade, provided the distance from the lower grade to the top does not exceed 10 feet.
Violations & Fines
Fence-cost disputes between neighbors are civil matters resolved under Civil Code 841, not enforced by the County. Failing to give the required 30-day notice can weaken a claim for cost-sharing in small claims or civil court.
Frequently Asked Questions
Does Ventura County decide who pays for a shared fence?
Do I have to tell my neighbor before building a shared fence?
Sources & Official References
Other rules in Ventura County
California rules heatmap·Compare Ventura County to another location·View the California fence regulations overview
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