San Diego County, CA Fence Regulations: Fence Permit Requirements (2026)
Key Facts
- Permit-exempt height
- 6 feet or under
- Exempt open security fence
- 8 feet, barbed/razor wire top
- Pool barrier fences
- not exempt, always need permit
- Enforcing agency
- Planning & Development Services
- Governing section
- County Code § 91.1.105.2(a)(4)
Summary
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.
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, cases, racks, counters and partitions not over 5 feet 9 inches high.
(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.
(8) Water tanks supported directly upon grade if the capacity does not exceed 5,000 gallons and the ratio of height to diameter or width does not exceed two to one, or the capacity does not exceed 10,000 gallons and the ratio of height to diameter or width does not exceed one and one-half to one.
(9) Decks, walks and driveways not more than 30 inches above adjacent grade and not over any basement or story below and are not part of an accessible route.
(10) Painting and papering and similar finish work.
(11) Temporary motion picture, television and theater stage sets and scenery.
(12) Window awnings on Group R-3 or Group U occupancies supported by an
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-141: Administrative: Current through Ord. No. 11007 (N.S.), effective 7-10-26 | Regulatory: Current through Ord. No. 11008 (N.S.), effective 7-24-26).
Full Breakdown
The county's Building Code exempts fences and freestanding masonry walls from a building permit if they're not over 6 feet high, per County Code § 91.1.105.2(a)(4) in Title 9. Swimming pool barrier fences are excluded from that exemption and always need review under the county's separate pool barrier rules. Open fences up to 8 feet are still exempt if the top 2 feet is barbed or razor wire angled for security. Anyone building a taller solid fence, wall, or non-exempt pool barrier fence in unincorporated areas must pull a building permit from Planning & Development Services before starting work.
Violations & Fines
Building without a required permit is a code violation the county can red-tag and require correction for; Planning & Development Services can order the unpermitted fence removed or permitted after the fact with fees.
Frequently Asked Questions
Do I need a permit for a 6-foot fence in unincorporated San Diego County?
What about a taller security fence topped with barbed wire?
Sources & Official References
Other rules in San Diego County
California rules heatmap·Compare San Diego County to another location·View the California fence regulations overview
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