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🧱 Fence Regulations/Height Limits

Height Limits: Ontario vs San Bernardino

How do height limits rules compare between Ontario, CA and San Bernardino, CA?

Ontario and San Bernardino have similar restriction levels.

Ontario, CA

San Bernardino County

Some Restrictions

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 β†’

San Bernardino, CA

San Bernardino County

Some Restrictions

San Bernardino Development Code 19.20.030 limits residential fences to four feet in front yards and six feet in side and rear yards. Taller fences need a fence height modification permit.

View full San Bernardino rules β†’

Key Facts Comparison

FactOntarioSan Bernardino
Rear and Side6 feet maximum-
Front Yard3 feet solid or 4 feet with openwork4 feet max
Corner Sight42 inches in triangle-
Buffer WallsUp to 8 feet industrial edge-
DeviationVariance or adjustment required-
Side and Rear-6 feet max
Residential Modification-Up to 8 feet with permit
Code-Development Code 19.20.030

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.

San Bernardino FAQ

Can I build an eight-foot fence in my backyard?

Only with a fence height modification permit through Planning; the by-right limit in residential side and rear yards is six feet.

What about the fence along the corner of the lot?

Corner lots have a sight-visibility triangle that limits fences and landscaping near intersections; expect lower heights there.

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