Simi Valley, CA Fence Regulations: Neighbor Fence Rules (2026)
Key Facts
- Cost Sharing
- Equal split presumed (CC 841)
- Notice Required
- 30 days written to neighbor
- Dispute Resolution
- Civil matter, mediation or court
- City Role
- Code compliance only
Summary
California's Good Neighbor Fence Act (Civil Code 841) applies in Simi Valley, requiring adjacent property owners to share equally in the cost of maintaining boundary fences. The city does not mediate private fence disputes but enforces code compliance.
(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.
Full Breakdown
Under California Civil Code Section 841 (Good Neighbor Fence Act), adjoining property owners in Simi Valley are presumed to share equally in the responsibility for maintaining a shared boundary fence. Before replacing or building a new boundary fence, a property owner must provide 30 days written notice to the neighbor including the proposed project description, estimated cost, and timeline. If the neighbor does not respond within 30 days, the building owner may proceed and seek cost recovery. The city's role is limited to enforcing development code standards for height, materials, and setbacks. Private disputes about fence cost-sharing or placement are civil matters resolved through mediation or small claims court.
Violations & Fines
The city does not adjudicate private fence disputes. However, fences that violate height limits, setback requirements, or material standards are subject to Code Enforcement action regardless of which neighbor built the fence. Both property owners may be cited for non-compliant boundary fences.
Frequently Asked Questions
Does my neighbor have to pay for half the fence?
Can the city resolve a fence dispute with my neighbor?
What if my neighbor builds a fence I do not like?
Sources & Official References
Other rules in Simi Valley
California rules heatmap·Compare Simi Valley to another location·View the California fence regulations overview
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Neighbor Fence Rules in Nearby Cities
How other cities in Ventura County handle neighbor fence rules.