Permit Requirements: Ontario vs Rialto
How do permit requirements rules compare between Ontario, CA and Rialto, CA?
Ontario and Rialto have similar restriction levels.
Ontario, CA
San Bernardino County
Ontario requires a building permit for masonry walls and any fence over 7 feet under the California Building Code. Retaining walls over 4 feet also require permits. Standard 6-foot wood or vinyl fences typically do not.
View full Ontario rules →Rialto, CA
San Bernardino County
San Bernardino County requires a building permit for fences over 6 feet tall. Shorter fences must still comply with Development Code Ch. 83.06 height and setback rules.
View full Rialto rules →Key Facts Comparison
| Fact | Ontario | Rialto |
|---|---|---|
| No Permit | Wood or vinyl up to 7 feet | - |
| Permit Required | Masonry and walls over 7 feet | - |
| Retaining Wall | Permit over 4 feet tall | - |
| Right-of-Way | Encroachment permit required | - |
| HOA | Separate from city permit | - |
| Permit Threshold | - | Over 6 feet tall |
| Front Yard Max | - | 3.5 feet |
| Side/Rear Max | - | 6 feet without permit |
| Building Division | - | (909) 387-8311 |
| Corner Sight Triangle | - | 3 ft within 25 ft |
Highlighted rows indicate differences between cities.
Ontario FAQ
Do I need a permit for a 6-foot wood fence in Ontario?
Usually not for the fence itself if it is not combined with a retaining wall or masonry. You still must meet Development Code setback and height rules.
What about a block wall between neighbors?
Yes, masonry block walls require a building permit for footings and reinforcement regardless of height.
Rialto FAQ
Do I need a permit for a fence in unincorporated San Bernardino County?
No permit is needed for fences 6 feet or shorter in side and rear yards or 3.5 feet or shorter in front yards. Any fence taller than 6 feet, or any retaining wall over 4 feet, requires a building permit from the county Building and Safety Division.
What is the fence height limit on a corner lot?
Corner lots must maintain a clear sight triangle, generally limiting fence height to 3 feet within 25 feet of the intersection to preserve visibility for vehicles and pedestrians.
How do I apply for a fence permit?
Submit your application through the San Bernardino County ePermit portal at epermits.sbcounty.gov or in person at Land Use Services in San Bernardino or Hesperia.
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