Bostonia, CA Fence Regulations: Material Restrictions (2026)
Key Facts
- Barbed/razor wire
- Top 2 ft only, security fences
- Open security fence height
- Up to 8 feet
- Large rural lots
- Wire/rail fence 72 in front
- WUI material
- Non-combustible near buildings
- Masonry block
- ASTM C90 Grade N, grouted
Summary
San Diego County limits barbed and razor wire: open fences may reach 8 feet only where the top two feet are barbed or razor wire for security, and WUI fences near buildings must be fire-resistive.
Open fences up to 8 feet in height, where allowed by the County Zoning Ordinance, 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.
Full Breakdown
In unincorporated Bostonia, fence materials are governed by San Diego County. Solid fences are capped at 42 inches (front/exterior side) and 72 inches (rear/side) under § 6708, but open fences may reach 8 feet only where the uppermost two feet consist solely of barbed or razor wire and support elements angled from vertical for security. On lots of one acre or larger in the A70, A72, RR, S82, S88, S90 and S92 zones, open fences of woven or barbed wire, wrought iron, pipe corral, or rails may be 72 inches high in the front yard. Masonry fences must use ASTM-grade block, and WUI fences within 5 feet of a building must be non-combustible.
Violations & Fines
Prohibited materials or over-height wire fences can trigger code compliance action requiring removal or a permit and, in WUI areas, fire-safety correction.
Frequently Asked Questions
Can I use barbed wire on my Bostonia fence?
Are vinyl or wood fences allowed?
Sources & Official References
Other rules in Bostonia
California rules heatmap·Compare Bostonia to another location·View the California fence regulations overview
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Material Restrictions in Nearby Cities
How other cities in San Diego County handle material restrictions.