Fence Requirements: Ontario vs Rialto
How do fence requirements rules compare between Ontario, CA and Rialto, CA?
Ontario and Rialto have similar restriction levels.
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 →Rialto, CA
San Bernardino County
San Bernardino County Code Ch. 83.06 limits fences to 3.5 feet in front yards and 6 feet in side and rear yards. Corner sight triangles limit height to 3 feet within 25 feet of intersections.
View full Rialto rules →Key Facts Comparison
| Fact | Ontario | Rialto |
|---|---|---|
| Zoning | Setbacks and sight triangles | - |
| Easements | Cannot encroach without consent | - |
| Barbed Wire | Industrial and agricultural only | Not in residential |
| Buffer Walls | Required industrial to residential | - |
| HOA | Adds design controls | - |
| Front Yard Max | - | 3.5 feet |
| Side/Rear Max | - | 6 feet (8 ft with permit) |
| Agricultural Zone | - | Up to 8 feet |
| Corner Sight Triangle | - | 3 ft in 25 ft |
Highlighted rows indicate differences between cities.
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.
Rialto FAQ
How tall can my fence be in unincorporated San Bernardino County?
Residential fences are limited to 3.5 feet in the front yard and 6 feet in side and rear yards without a permit. Agricultural zones allow up to 8 feet for livestock fencing. Taller fences require a building permit.
Is barbed wire allowed on my fence?
Barbed wire and razor wire are prohibited on residential fences but allowed in agricultural, commercial, and industrial zones, typically only above 6 feet in height.
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