County rules cover all four communities. Defensible space falls under the 2026 County WUI Code, which the County's 12 unincorporated fire protection districts adopted.
Fences stop at 42 in in front and exterior side yards. On lots of one gross acre or more in the A70, A72, RR, S82, S88, S90 and S92 use regulations, open fences of woven or barbed wire, wrought iron, pipe corral or rails may be 72 in, with posts no wider than 24 in, no taller than 72 in and at least 8 ft apart edge to edge. How that spacing applies to an ordinary rail fence isn't settled, so confirm with County PDS.
Source: County Zoning Ordinance § 6708, as of October 2026Solid or open, fences in rear and interior side yards may be 72 in.
Source: § 6708, as of October 2026Fences and freestanding masonry walls up to 6 ft need no building permit if they also meet zoning; pool barriers aren't covered by the exemption.
Source: PDS 110 · PDS 070, as of October 2026A retaining wall is exempt only if it retains 3 ft of soil or less, stands no more than 6 ft overall from the lowest finished grade, has level backfill with no structures within 6 ft and carries no surcharge.
Source: PDS 110, as of October 2026A new or modified pool needs a permanent enclosure separating it from neighboring properties; removable fencing doesn't count. It stands at least 60 in on the side away from the pool, the gate latch sits at least 54 in above the bottom of the gate, and everything is inspected before plaster or fill.
Source: PDS 379 (Rev. 02/09/2026), as of October 2026The County WUI Code requires the 5 ft around a building to be continuous hardscape or noncombustible materials, and its Zone 0 figure says to remove combustible “fences attachments.” A County fence handout asks for noncombustible material or fire-retardant wood within 5 ft of a building, though its current code basis is unconfirmed. The state's Zone 0 package was withdrawn from review on September 8, 2026 and is not in effect.
Source: County WUI Code § 604.12.1, Annex D · PDS 070, as of October 2026Hedges used as fences follow the same height limits (§ 6704). More in unincorporated County fence rules in our county guide. This is planning information; the County decides what a project needs.
Enclosure setbacks follow the parcel's Animal Designator: 10 ft from interior side and rear lines in the most restrictive column, down to 0 ft for an open enclosure in the least restrictive. A pasture of at least an acre with no interior fencing, not used for permanent keeping, is exempt (County Zoning Ordinance § 3112).
County zoning lists barbed wire among the materials for a 72-in large-lot fence. University extension guides from Minnesota, Georgia and Penn State advise against it for horses, and Penn State suggests horse fences of 54 to 60 in. That is guidance, not law.
The County WUI Code requires a fuel-modification zone around every building designed to house farm animals, while fences more than 5 ft from a dwelling don't count as structures for it (§ 604.6).
Manual gates only: we don't build driveway, electric or automated gates, including ranch entry gates.
A typical project moves through five steps. The County and your fire protection district have the final say on what applies.
We walk the property with you: zone and animal designator, pasture and enclosure layout, slope, the pool and where fences meet buildings.
Fence types, heights, gate locations, materials and finish, run by run.
Rails, panels and gates made in our Escondido shop.
Posts set to grade, rails and mesh fitted, gates hung and adjusted.
We walk the finished work with you.
Up to 7 ft 6 in by administrative exception, in an interior side yard or a rear yard that doesn't abut a street, private road or alley, with written consent from all contiguous owners. Beyond that, the Director may grant an Administrative Permit after notice to owners within 300 ft (County Zoning Ordinance § 6708).
Only on a lot of 3 net acres or more with the pool at least 100 ft from the nearest property line, and with one County-accepted and one State-accepted safety feature installed (PDS 379).
Both are set parcel by parcel on the County zoning map; County Planning & Development Services can confirm them.
Cities and County areas nearby write their own fence rules.
Tell us what the fence has to hold, from horses to a pool, and what the ground is like. We'll walk the property with you, then write up the scope.
Most site reviews and estimates are free; we confirm before booking.
Prefer to talk it through first? Call (619) 975-1883, weekdays 8am to 6pm.