Fence permit checklist — Ontario, California
Assembled from Ontario’s own published permit rules. Every line below is quoted from a city document and linked to it. Nothing here is generated, estimated, or inferred from another jurisdiction.
Do you need a permit?
Ontario requires a permit for a fence.
Ontario is far stricter than the state model on fences. Its Building Permit FAQ states that permits are required for fences over 3 feet high, and expressly names concrete block walls, chain link, wrought iron and wood fences as covered. Compare CBC/CRC 105.2's 7-foot exemption -- Ontario has cut that to 3 feet, so most ordinary residential fences need a permit here.
Loading the full checklist…
Sources
- fence — permit rules ↗verified August 2026
Other permits Ontario publishes rules for
Listed because the city publishes a separate rule for each type — not because this project necessarily triggers one. Whether it does depends on your scope of work.
- Shed permit checklist
- Water heater permit checklist
- Re-roof permit checklist
- Retaining wall permit checklist
- Electrical work permit checklist
- General building work permit checklist
BuildSpec is a reference, not the authority having jurisdiction. Confirm requirements with Ontario before you build.