Neighbor Fence Rules: Brentwood vs Oakley
How do neighbor fence rules rules compare between Brentwood, CA and Oakley, CA?
Brentwood and Oakley have similar restriction levels.
Brentwood, CA
Contra Costa County
Hedges and landscaping used as boundary barriers in Brentwood are subject to the same height limits as fences (3.5 ft front, 6 ft side/rear) when used to enclose a yard. Hedges must not encroach into the public right-of-way, block sidewalks, or obscure sight lines at intersections.
View full Brentwood rules →Oakley, CA
Contra Costa County
Boundary fence disputes in Oakley are governed by California Civil Code Section 841 (Good Neighbor Fence Act), which presumes equal cost-sharing for boundary fences between adjoining owners and requires 30 days written notice before construction. Oakley does not mediate these civil disputes directly.
View full Oakley rules →Key Facts Comparison
| Fact | Brentwood | Oakley |
|---|---|---|
| Front hedge height | ~3.5 ft | - |
| Side/rear | Taller generally OK | - |
| Sidewalk clearance | 7 ft vertical | - |
| Street clearance | 13.5 ft vertical | - |
| Visibility triangle | 3 ft max | - |
| Governing law | - | CA Civil Code 841 |
| Notice period | - | 30 days written |
| Cost split | - | 50/50 presumption |
| Spite fences | - | CA Civil Code 841.4 |
| City role | - | Does not mediate |
Highlighted rows indicate differences between cities.
Brentwood FAQ
Can my neighbor's hedge be taller than a fence would be allowed?
Generally no if it serves as a boundary barrier in the front yard or visibility triangle—it's treated like a fence. Interior hedges can grow taller, though local courts recognize nuisance claims if hedges unreasonably deprive neighbors of light/air.
Who is responsible for trimming overhanging branches?
You may legally trim branches that cross onto your property, up to the property line, without permission—as long as you don't kill the tree. For protected heritage trees, a permit may be required before any pruning.
Oakley FAQ
Does my neighbor have to pay half of a new fence?
Under CA Civil Code 841, yes — but only if you provide the required 30-day written notice and the project is reasonable. They can rebut the presumption.
How do I find my actual property line?
Hire a licensed land surveyor. City records, title documents, and subdivision maps provide starting points but a survey produces defensible line markers.
What is a spite fence?
A fence over 10 feet tall built primarily to annoy a neighbor, prohibited by CA Civil Code 841.4. Affected neighbors can sue for abatement and damages.
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