Fence Requirements: Fontana vs Ontario
How do fence requirements rules compare between Fontana, CA and Ontario, CA?
Fontana and Ontario have similar restriction levels.
Fontana, CA
San Bernardino County
Fontana fence rules combine Zoning Code height and setback limits with Building Code structural requirements and design-review standards in specific plan areas. Standard residential fences are 6 feet side and rear, 42 inches front, with permits required for masonry walls over 42 inches.
View full Fontana rules →Ontario, CA
San Bernardino County
Ontario fence requirements include zoning-based heights, setbacks, sight triangles, buffer walls on industrial edges, and CBC structural standards. Pool, retaining, and masonry walls have additional requirements.
View full Ontario rules →Key Facts Comparison
| Fact | Fontana | Ontario |
|---|---|---|
| Side/Rear | 6 ft max standard | - |
| Front | 36-42 in typical | - |
| Permit | Masonry over 42 in | - |
| Pool | 60 in min Title 24 | - |
| HOA | May require specific materials | Adds design controls |
| Zoning | - | Setbacks and sight triangles |
| Easements | - | Cannot encroach without consent |
| Barbed Wire | - | Industrial and agricultural only |
| Buffer Walls | - | Required industrial to residential |
Highlighted rows indicate differences between cities.
Fontana FAQ
Do I need a survey before building?
Strongly recommended. Many disputes come from fences placed a foot or two over the line based on old stakes or assumptions.
Can I share a wall with my neighbor?
Yes. California Civil Code 841 governs shared boundary fences with equal cost presumption and 30 days written notice.
Ontario FAQ
Can I put barbed wire on my Ontario fence?
Generally not in residential zones. Barbed and razor wire is limited to industrial and agricultural zones, often with approvals.
Do easements affect fence placement?
Yes. Fences cannot block utility or drainage easements. Utilities can remove unauthorized fencing in an easement without paying to replace it.
Compare other topics
See how Fontana and Ontario compare on other ordinance categories.
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