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San Bernardino County, CA Fence Regulations: Neighbor Fence Rules (2026)

Few Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified June 2026

Key Facts

County role
Sets height, materials, placement (Ch. 83.06) - not cost-sharing
Cost-sharing law
CA Civil Code Section 841 (Good Neighbor Fence Act of 2013)
Default cost split
Equal shares presumed for boundary fences
Notice required
30 days' prior written notice to adjoining owner
Height on shared line
Measured from lowest contiguous parcel's grade (83.06.040)
Disputes
Private civil matter; presumption is rebuttable

Summary

The San Bernardino County Development Code sets fence height, materials, and placement, but does not allocate the cost of a shared boundary fence between neighbors. Cost-sharing for division fences is governed by California's Good Neighbor Fence Act (Civil Code Section 841), which presumes adjoining owners share construction and maintenance costs equally after 30 days' written notice.

City-specific rules exist: Chino, Rialto, Ontario, Rancho Cucamonga, Fontana, and San Bernardino have their own neighbor fence rules rules that differ from San Bernardino County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

841. (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.

Source: CA Civil Code 841View official code

Full Breakdown

070). It does not, however, decide who pays for a fence on a property line. That question is governed by California state law, which applies countywide. Under the Good Neighbor Fence Act of 2013 (Civil Code Section 841), adjoining landowners are presumed to share equally in the benefit of, and the reasonable costs of construction, maintenance, or necessary replacement of, a fence dividing their properties. A landowner who intends to incur such costs must give each affected adjoining owner 30 days' prior written notice describing the problem, the proposed work, the estimated cost, and how costs are to be shared.

A neighbor can rebut the equal-share presumption with evidence (for example, that the fence is excessive or benefits only one party), and a court may then order a lesser share or no contribution. 040 a fence on the line is measured from the lower of the two parcels' finished grades.

Violations & Fines

There is no County penalty for cost disputes between neighbors - these are private civil matters resolved under Civil Code Section 841 (often in small claims court). However, the County can still cite a boundary fence that violates Chapter 83.06 height, material, or wall requirements, or that encroaches a sight-distance area or easement.

Frequently Asked Questions

Does my neighbor have to pay half the cost of a shared fence?
San Bernardino County's code does not allocate fence costs, but California Civil Code Section 841 (the Good Neighbor Fence Act) presumes adjoining owners share the reasonable cost of a boundary fence equally. Before building, give your neighbor 30 days' written notice describing the work, the cost, and the cost split. A neighbor can challenge the equal share with evidence, and a court may then order a different amount or none.
How is the height of a fence on the property line measured if our yards are at different levels?
Under Development Code Section 83.06.040, the height of a fence or wall built along the property line is determined using the finished grade of the lowest of the two contiguous parcels. In general, fence height is measured from the finished grade at the fence's location. Confirm the exact property line before building, since boundary location is a civil matter, not one the County resolves.

Sources & Official References

Other rules in San Bernardino County

All San Bernardino County rules

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