What Is an Encroachment Permit?
An encroachment permit is authorization from the agency that owns a road to perform work in, over, or under the public right-of-way. Its conditions govern how the work is done. It is the common permit for work such as excavation, utility work, and lane or sidewalk closures in the right-of-way.
Last reviewed: June 24, 2026
Why It Matters
Without the permit, the work is unauthorized — a stop-work risk regardless of how good the traffic control is.
The permit's conditions, such as hours, notice, and traffic control, are enforceable requirements for the project.
Where It Shows Up in the Field
The active permit and its conditions should be kept on site and available to an inspector.
Different agencies issue their own encroachment permits — Caltrans for state highways, counties and cities for their roads.
Common Mistakes
- Working without a valid permit, or after it has expired.
- Doing work beyond what the permit authorizes.
- Not keeping the permit and conditions on site.
What to Check Before Work Begins
- That a valid, current permit is in place for the work and location.
- That the work stays within what the permit authorizes.
- That permit conditions — hours, notice, restoration — are being met.
Related Terms
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Frequently Asked Questions
What is an encroachment permit?
It is authorization from the agency that owns the road to work in the public right-of-way. Its conditions govern how the work is done. The specific requirements, fees, and timelines come from the issuing agency.
Who issues an encroachment permit?
The agency that owns the road — Caltrans for state highways, the county for county roads, or the city for city streets. Confirm the correct agency and its requirements before starting.
Need help with permits and agency coordination?
Work Zone Compliance is an educational resource. Public Ready supports permit readiness, encroachment and right-of-way submittals, agency coordination, and corrections across Southern California.
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