Height Limits: Ontario vs Rialto
How do height limits rules compare between Ontario, CA and Rialto, CA?
Ontario and Rialto have similar restriction levels.
Ontario, CA
San Bernardino County
Ontario limits residential fence heights under the Development Code. Typical maximums are 6 feet rear/side, 3 feet front, and 42 inches in sight-distance triangles at corners. Taller fences need a variance.
View full Ontario rules →Rialto, CA
San Bernardino County
Rialto Municipal Code Chapter 18.61 (Design Guidelines), specifically section 18.61.170 Fences and Walls, governs residential fence and wall heights in zoning districts. Standard California municipal practice limits front-yard fences to 3-4 feet and side/rear yards to 6 feet; anything taller requires a building permit per the California Building Code (Title 24 CCR) adopted in Rialto Code Title 15.
View full Rialto rules →Key Facts Comparison
| Fact | Ontario | Rialto |
|---|---|---|
| Rear and Side | 6 feet maximum | - |
| Front Yard | 3 feet solid or 4 feet with openwork | - |
| Corner Sight | 42 inches in triangle | - |
| Buffer Walls | Up to 8 feet industrial edge | - |
| Deviation | Variance or adjustment required | - |
| Code Section | - | Rialto Code §18.61.170 (Fences and Walls) |
| Front Yard Typical | - | 3-4 ft max in residential zones |
| Side/Rear Yard Typical | - | 6 ft max without permit |
| Permit Threshold | - | Over 7 ft requires building permit (CBC §105.2) |
| Corner Visibility | - | Sight-distance triangle required |
Highlighted rows indicate differences between cities.
Ontario FAQ
Can I build a 6-foot front fence in Ontario?
No. Front-yard fences are generally limited to 3 feet solid or 4 feet with at least half open decorative metal. A 6-foot front fence requires a variance.
Does a corner lot have extra rules?
Yes. Fences within the 42-inch sight-distance triangle at corners and driveways cannot block driver visibility.
Rialto FAQ
How tall can my backyard fence be in Rialto?
Side and rear yard fences are typically capped at 6 feet under Rialto Code §18.61.170. Anything over 7 feet requires a building permit per California Building Code §105.2 as adopted in Rialto Code Title 15.
Do I need a permit for a 6-foot wood fence?
A 6-foot wood fence in side/rear yards generally does not require a building permit but must comply with zoning setbacks under Rialto Code Chapter 18.61. Confirm with Building & Safety at 909-820-2505.
Compare other topics
See how Ontario and Rialto compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool