Neighbor Fence Rules: El Cerrito vs Walnut Creek
How do neighbor fence rules rules compare between El Cerrito, CA and Walnut Creek, CA?
El Cerrito has fewer restrictions than Walnut Creek.
El Cerrito, CA
Contra Costa County
Hedges and living screens in unincorporated Contra Costa County are generally treated as landscaping and are not subject to the same permit thresholds as fences, but height limits in corner-lot visibility triangles and spite-fence rules (Civil Code §841.4 over 10 feet) still apply.
View full El Cerrito rules →Walnut Creek, CA
Contra Costa County
Hedges and dense landscaping in Walnut Creek are treated as fences when used as boundary screening and are subject to the same height limits as solid fences — six feet in side and rear yards and three and a half feet in front-yard setbacks and corner sight triangles.
View full Walnut Creek rules →Key Facts Comparison
| Fact | El Cerrito | Walnut Creek |
|---|---|---|
| Permits | Usually none for hedges | - |
| Visibility Triangle | ~30 in max | - |
| Spite Hedge Cap | Civil Code §841.4 — 10 ft | - |
| Solar Conflict | Civil Code §714 | - |
| ROW Encroachment | County can order trimming | - |
| Hedges treated as | - | Fences (same height limits) |
| Rear/side yard | - | 6 feet max |
| Front yard | - | 3.5 feet max |
| Sight triangle | - | 30 inches max |
| Trees | - | Generally exempt (see tree ordinance) |
Highlighted rows indicate differences between cities.
El Cerrito FAQ
Can I grow a 15-foot hedge along my property line?
In principle yes — hedges are not capped at fence heights — but a tall hedge built maliciously to block a neighbor could be challenged as a spite fence under Civil Code §841.4.
Can I trim my neighbor's hedge overhanging my yard?
You can trim back to the property line at your own expense without damaging the plant's health. You cannot enter their property without permission.
Walnut Creek FAQ
How tall can I let my hedge grow between me and my neighbor?
Up to six feet in side or rear yards. In a front-yard setback the hedge is limited to about 3.5 feet, and within a corner sight triangle no more than 30 inches. Enforcement is complaint-based.
My neighbor's bamboo is invading my yard — what are my rights?
Under California law, bamboo is the responsibility of the property where it is rooted. You can trim any portion that crosses the property line at the line itself, and you can require the neighbor to install a root barrier or remove spreading plants as a nuisance.
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