Neighbor Fence Rules: Petaluma vs Santa Rosa

Does my neighbor have to pay for half of a shared boundary fence in unincorporated Sonoma County?

Generally yes, by presumption. Civil Code 841 presumes adjoining landowners share an equal benefit from a dividing fence and are equally responsible for the reasonable costs of its construction, maintenance, or necessary replacement, unless a written agreement says otherwise. A court can reduce or eliminate a neighbor's share if equal responsibility is shown to be unjust based on factors like disproportionate burden or financial hardship.

What notice do I have to give before building or replacing a shared fence?

Civil Code 841(b)(2) requires 30 days' prior written notice to each affected adjoining landowner. The notice must mention the presumption of equal responsibility and describe the nature of the problem, the proposed solution, the estimated costs, the proposed cost-sharing approach, and the proposed timeline.

What counts as an illegal spite fence in California?

Under Civil Code 841.4, any fence or structure in the nature of a fence that unnecessarily exceeds 10 feet in height and is maliciously erected or maintained for the purpose of annoying the owner or occupant of adjoining property is a private nuisance, and the affected neighbor may pursue civil nuisance remedies to have it abated.

Does my neighbor have to pay for half the fence?

Under California Civil Code Section 841, adjoining property owners share equally the cost of maintaining a boundary fence. This applies to reasonable, necessary fences.

Do I need my neighbor's permission to build a fence?

Not if the fence is entirely on your property. Boundary line fences should involve agreement with your neighbor on cost sharing and design.