An encroachment permit is the legal authorization you need from a local public works department or state transportation agency before building, digging, or placing anything inside a public right-of-way. That right-of-way covers the land reserved for public travel and utility access: sidewalks, paved streets, curb cuts, medians, and public alleys. The permit gives you a temporary, revocable right to use land that belongs to the public, and it comes with conditions attached. You need one any time your private project physically enters that zone, whether for a day or for decades.
When a Project Triggers the Requirement
The rule is simple in principle: if the work crosses your property line into public space, the local government wants formal oversight. In practice, the triggers include installing or widening a driveway that cuts through a public curb, repairing a sidewalk where the finished surface must meet local engineering standards, and placing permanent features like retaining walls inside the right-of-way.
Subsurface work counts too. Utility companies and private contractors need permits for laying fiber optic cable or repairing sewer lines. So do temporary obstructions. A construction dumpster parked on a public street, scaffolding set up for building maintenance, or a moving pod sitting in the roadway more than a few hours can each trigger the requirement.
Projects touching a state or federal highway face tougher review. Federal regulations require new above-ground utility facilities to be placed as far from the traveled lanes as possible, and they prohibit placement within the highway’s clear zone unless underground installation is technically infeasible or unreasonably costly.1eCFR. 23 CFR Part 645 – Utilities Expect a more rigorous process on a state highway than you would see on a residential street.
What You Submit With the Application
First, identify the agency that controls the right-of-way. For city streets and sidewalks, that’s usually the local department of public works. For state highways, it’s the state department of transportation. Filing with the wrong agency wastes weeks.
From there, assemble the core documents:
- Scaled technical site plans showing the exact dimensions and location of the work relative to curbs, utility lines, and drainage structures.
- Proof of general liability insurance, commonly starting at $1,000,000 per occurrence, with the municipality named as an additional insured.
- Contractor credentials, including license number and local business tax certificate if a professional is doing the work.
- A written project description covering materials, construction methods, and timeline.
- A performance or maintenance bond guaranteeing site restoration if something goes wrong. Amounts vary and are often tied to project cost.
Application fees are due at submission and are generally non-refundable. A minor temporary-use permit for placing a dumpster might run a few hundred dollars; a complex permanent installation with excavation and utility work can run well over a thousand. Review commonly takes two to six weeks. Missing a single document is the most frequent reason an application stalls.
Traffic Control Plans
If the work disrupts vehicle or pedestrian traffic in any way, a traffic control plan is almost always required. Federal standards call for traffic control planning on all highway construction, utility work, and maintenance operations before anyone enters the work zone.2Federal Highway Administration. Manual on Uniform Traffic Control Devices 11th Edition – Part 6
The plan has to be prepared by someone trained in temporary traffic control, and sign and barrier placement should reflect engineering judgment, not guesswork. A simple driveway project might reference a standard MUTCD diagram. A lane closure on a busy arterial needs a project-specific drawing. The plan must maintain accessible pedestrian routes around the work zone, preserve access to adjacent properties and businesses, and limit speed reductions to no more than 10 mph below the normal posted speed.2Federal Highway Administration. Manual on Uniform Traffic Control Devices 11th Edition – Part 6 Plans that simply block a sidewalk without an alternate path get rejected.
ADA Standards for Sidewalks and Curb Ramps
Any permitted work that alters a sidewalk, curb ramp, crosswalk, or other pedestrian facility has to comply with federal accessibility rules. The Public Right-of-Way Accessibility Guidelines took effect for new construction and alterations in January 2025, and reviewing engineers check plans against them.3Federal Register. Transportation for Individuals With Disabilities – Adoption of Accessibility Standards for Pedestrian Facilities in the Public Right-of-Way
The numbers to design around:
- Pedestrian access routes must keep at least 48 inches of unobstructed clear width, not counting the curb itself.4U.S. Access Board. R3 Technical Requirements – Public Right-of-Way Accessibility Guidelines
- Running slope in the direction of travel cannot exceed 5 percent within a highway right-of-way, unless the adjacent street grade is steeper.4U.S. Access Board. R3 Technical Requirements – Public Right-of-Way Accessibility Guidelines
- Cross slope on sidewalks outside crosswalks is capped at roughly 2 percent.4U.S. Access Board. R3 Technical Requirements – Public Right-of-Way Accessibility Guidelines
- Where clear width drops below 60 inches, passing spaces of at least 60 by 60 inches must appear every 200 feet.
Inspectors measure these precisely. Concrete that falls outside the tolerances gets torn out and redone at your expense.
Call Before You Dig
If the work involves any excavation, the encroachment permit alone is not enough. Under 49 U.S.C. ยง 60114, anyone planning excavation, demolition, tunneling, or construction near underground facilities must first use the state’s one-call notification system to identify what is buried in the work area.5Office of the Law Revision Counsel. 49 USC 60114 – One-Call Notification Systems That means calling 811 or submitting a locate request online at least a few business days before excavation begins.
Utility operators then have a limited window to mark their underground lines. You cannot dig in disregard of those marks, and if you damage a line, you must report it immediately to the owner or operator.5Office of the Law Revision Counsel. 49 USC 60114 – One-Call Notification Systems Striking a gas line or fiber cable creates a safety emergency, triggers financial liability for repair costs, and exposes you to federal penalties for violations of the one-call requirements. The encroachment permit authorizes your use of the right-of-way. The 811 notification protects what is already underneath it. They are separate obligations.
Insurance Isn’t the Whole Picture
An encroachment permit shifts nearly all risk from the government to you. The insurance requirement is one piece of that. If someone trips over your excavation or a car hits your scaffolding, the municipality expects your policy to respond.
The bigger surprise is the indemnification agreement. Nearly every jurisdiction requires one as a condition of the permit. These agreements obligate you to defend the government against lawsuits arising from your permitted activity, pay damages, and cover the government’s legal fees. The only common exception is damage caused solely by the government’s own misconduct.
That obligation runs independently of your insurance limits. If a claim exceeds your coverage, you are still on the hook personally. A $1,000,000 policy does not cap your exposure when the hold-harmless agreement has no ceiling. For excavation near existing utilities or heavy equipment on a public street, ask your insurance agent whether your coverage actually matches the risk.
Conditions, Inspections, and How Long the Permit Lasts
An approved permit carries enforceable conditions. Expect restrictions on work hours, with noise-heavy tasks commonly limited to weekday daytime hours. The traffic control plan you submitted becomes part of the permit, so any deviation from the approved layout is a violation.
Most permits require inspections at specific milestones. The agency will check excavations before concrete pour or backfill, verify utility connections, and confirm that the finished surface matches the approved grade and dimensions. A final inspection releases any bonds or deposits. Failing an inspection means remediation at your expense before the bond comes back, and repeat failures can bring additional fines or revocation.
Duration varies. Some jurisdictions issue permits that expire after a set period, from six months to several years depending on scope. Others keep permits open indefinitely but require annual fee payments and continuous proof of insurance. If the project runs long, request an extension before the permit expires. Working on an expired permit creates the same legal problems as working without one.
If an application is denied, the written denial should identify the specific deficiency. Many denials come from fixable issues like an incomplete traffic control plan or a site drawing that lacks detail, and resubmitting a corrected application is usually faster than filing a formal appeal. Agencies that do accept appeals typically give you somewhere between 30 and 60 days to file one, with the review going to a department director, city engineer, or hearing officer depending on local rules.
Maintenance and Removal After the Project Is Done
The permit does not just authorize installation. It creates an ongoing duty to maintain whatever you placed in the right-of-way. A driveway apron, retaining wall, or utility conduit stays your responsibility for as long as it remains there. A cracked apron that creates a tripping hazard is your problem to fix.
If conditions change and the agency decides the encroachment has to go, you typically get written notice and a short deadline, commonly around 10 days, to remove it and restore the site. Miss that window and the government can hire a crew, bill you for the work, and add administrative costs and legal fees.
Revocation follows a similar pattern. Common grounds include failing to comply with permit conditions, creating a safety hazard, failing to pay fees, or misrepresenting facts on the original application. After revocation you lose the right to maintain the encroachment and must restore the right-of-way. Some agencies allow a fresh application; the fee and process start over.
What Happens If You Skip the Permit
Working without a permit rarely ends well. The immediate consequence is a stop-work order that shuts down the project until you come into compliance. Fines vary by jurisdiction but commonly run from several hundred to several thousand dollars, and they can compound if you ignore the initial notice.
You also lose the legal protections the permit provides. Most commercial policies exclude unpermitted activity, so your insurance may not cover injuries or property damage from the work. Without an approved traffic control plan on file, you are personally exposed if a motorist or pedestrian is hurt in or near the work zone.
The worst outcome is a forced removal order. The agency can require you to rip out everything you installed, restore the site, and pay for damage to public infrastructure. Tearing out a freshly poured driveway apron or a new retaining wall costs far more than the permit fee ever would have. The permit is always cheaper than the alternative.