Concord, CA Fence Regulations: Neighbor Fence Rules (2026)
Key Facts
- Front Yard Max
- ~3.5 ft if functioning as fence
- Side/Rear Max
- ~6 ft if functioning as fence
- Sidewalk Clearance
- 8 ft vertical
- Corner Sight Triangle
- Vegetation <3 ft
- Abatement Authority
- CA H&S Code §14875
Summary
Hedges in Concord that function as fences are subject to the same height limits as fences: generally 3.5 feet in front yards and 6 feet in side and rear yards. Overgrown hedges obstructing sight triangles or sidewalks can be abated as a public nuisance. Hedges on boundary lines can be shared under California Civil Code §841 principles.
"Weeds," as used in this part, means vegetation growing upon streets, sidewalks, or private property in any county, including any fire protection district and may include any of the following:
(a) Vegetation that bears seeds of a downy or wingy nature.
(b) Vegetation that is not pruned or is otherwise neglected so as to attain such large growth as to become, when dry, a fire menace to adjacent improved property.
(c) Vegetation that is otherwise noxious or dangerous.
(d) Poison oak and poison ivy when the conditions of growth are such as to constitute a menace to the public health.
(e) Dry grass, stubble, brush, litter, or other flammable material which endangers the public safety by creating a fire hazard in an urbanized portion of an unincorporated area which has been zoned for single and multiple residence purposes.
Full Breakdown
Concord treats hedges functioning as boundary barriers (thick, continuous plantings) similarly to fences under Municipal Code Title 18 when they serve the same privacy or enclosure function. 5 feet in front-yard setbacks to maintain sight lines and 6 feet in side and rear yards. Taller ornamental shrubs are generally allowed when not functioning as an enclosure, but cities scrutinize dense continuous plantings. On corner lots, sight-distance triangles require vegetation to be maintained below 3 feet to ensure traffic safety. Hedges encroaching over public sidewalks must be trimmed to maintain 8 feet vertical clearance for pedestrians (California Streets and Highways Code §5610 makes adjacent owners responsible for sidewalk maintenance).
Overgrown vegetation is subject to abatement under Health & Safety Code §14875. Boundary hedges may qualify for the Civil Code §841 cost-sharing framework by analogy, though courts treat living hedges differently from constructed fences. HOA CC&Rs typically regulate hedge species, heights, and trimming schedules.
Frequently Asked Questions
Do hedge rules match fence rules?
Can my neighbor force me to trim my hedge?
What if my hedge blocks the sidewalk?
Sources & Official References
Other rules in Concord
California rules heatmap·Compare Concord to another location·View the California fence regulations overview
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Neighbor Fence Rules in Nearby Cities
How other cities in Contra Costa County handle neighbor fence rules.