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Fence Regulations in San Diego County, CA (2026)

5 county-level rules, plus city-specific rules for 10 cities in San Diego County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of San Diego County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Height Limits

In unincorporated San Diego County, Section 6708 of the County Zoning Ordinance limits solid fences and walls to 42 inches in the front or exterior side yard and 72 inches in the rear or interior side yard. Within the main building area, fences may reach the height allowed for the main building. Greater heights require an administrative permit or exception.

San Diego County Fence Height Limits

Some Restrictions

County of San Diego Planning & Development Services, Form PDS-070 Fences (Rev. 01/01/2023), Excerpts from County Zoning Ordinance § 6708

EXCERPTS FROM ZONING ORDINANCE § 6708 Fences and walls are permitted at the following locations provided they conform to the height limitations shown below:  Main building area: Permitted up to the maximum height applicable to the main building  Front or exterior side yard: Permitted up to a maximum height of 42 inches  Rear or interior side yard: Permitted up to a maximum height of 72 inche...

Fence Permit Requirements

Unincorporated San Diego County exempts fences and freestanding masonry walls up to 6 feet from a building permit; anything taller needs one, except open security fences up to 8 feet topped with barbed or razor wire.

San Diego County Fence Permit Rules

Some Restrictions

San Diego County Code § 91.1.105.2(a)(4)

Fences and free standing masonry walls, other than swimming pool barriers, not over 6 feet high. A building permit shall also not be required for open fences up to eight feet high provided the uppermost two feet consists only of barbed or razor wire and necessary support elements placed at an angle to the vertical for security purposes.       (5)   Oil derricks.       (6)   Moveable fixtures, c...

Neighbor Fence Rules

San Diego County's Zoning Ordinance sets fence heights and locations but does not allocate cost between neighbors. Shared boundary ('good-neighbor') fences are governed by California Civil Code Section 841, which presumes adjoining landowners share equally in the reasonable cost of construction, maintenance, or replacement and requires 30 days' prior written notice before incurring shared costs.

San Diego County Fence Neighbor Rules

Few Restrictions

California Civil Code § 841(a)-(b)

(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, maint...

Retaining Walls

In unincorporated San Diego County, retaining walls over 3 feet of retained soil or 6 feet total height need a county building permit before construction begins.

San Diego County Retaining Wall Height & Permit Rules

Some Restrictions

San Diego County Code § 91.1.105.2(a)(7)

A building permit shall not be required for the following... (7) Walls that retain not over three feet of soil as measured from the top of the footing to top of retained soil, are not more than 6 feet in total height as measured from the lowest finished grade, and have a level backfill with no other structures within 6 feet and not supporting a surcharge or impounding flammable liquids.

Material Restrictions

In unincorporated San Diego County, fences and walls can be built from any material commonly used for fencing, or another material the county's Planning Department accepts, as long as it meets sturdiness standards set elsewhere in county code.

San Diego County Fence Material Rules

Light Restrictions

San Diego County Zoning Ordinance § 6704.a

Materials for Fences and Walls. Fences and walls may be of any material commonly used in the construction of fences and walls, or otherwise acceptable by the Department, except as hereinafter specified. Such fence or wall shall meet any criteria for sturdiness and construction as established in other County regulations. b.   Opaqueness or Transparency of Fences. The degree of opaqueness or tran...

Fence Regulations by City in San Diego County

10 cities in San Diego County have their own fence regulations rules. Each link goes to that city's dedicated page with code citations.

All San Diego County ordinances

See every category we cover for San Diego County: parking, noise, fences, fires, animals, pools, and more.

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