Natural Gas Transmission Pipeline Easements

Natural gas transmission pipelines are the interstate highways of the natural gas system. They move large volumes of gas at high pressure over long distances — often crossing several states — from production regions or storage facilities to the local distribution networks that serve homes and businesses. When one of these pipelines crosses your land, the easement it requires is among the most restrictive a landowner will encounter.

Scale and pressure

Transmission pipelines range from roughly 6 inches to 42 inches or more in diameter. They operate at pressures that can exceed 1,000 pounds per square inch (psi), far higher than the low-pressure distribution lines that bring gas to your home. This combination of large diameter and high pressure is what drives the wide easement corridors and strict construction restrictions.

A pipeline may run for hundreds of miles, crossing thousands of private properties. For the pipeline operator, your land is one segment of a continuous system, which is why the easement terms tend to be standardized and non-negotiable on key operational points — though compensation and certain conditions are still negotiable.

FERC and interstate pipelines

Interstate natural gas pipelines — those crossing state lines — are regulated by the Federal Energy Regulatory Commission (FERC). To build an interstate pipeline, the operator must obtain a FERC certificate of public convenience and necessity. As part of the certificate process, FERC typically grants the operator the power of eminent domain — the legal authority to acquire easements through condemnation if a landowner and the operator cannot reach a voluntary agreement.

This doesn't mean you have to accept the first offer. Eminent domain sets a floor on the process — the operator can eventually compel acquisition — but it doesn't determine the price. Landowners retain the right to challenge the compensation amount in court.

Typical easement widths

Transmission pipeline easements generally include two components:

Permanent easement: The strip within which the pipeline is installed and the operator maintains perpetual rights to access, inspect, maintain, and replace the pipeline. Widths typically range from 25 to 50 feet for a single pipeline, though large-diameter or high-pressure lines may require more.

Temporary construction easement: The wider workspace needed during installation — for excavation, pipe staging, spoil storage, and equipment movement. This area typically extends 25 to 75 feet beyond the permanent easement on one or both sides and is released back to the landowner after construction is complete.

On many large pipeline projects, the combined temporary and permanent construction corridor is 100 feet or wider.

What you cannot do above a transmission pipeline

The restrictions within a transmission pipeline easement corridor are strict and ongoing:

• No permanent structures of any kind within the permanent easement corridor
• No deep-rooted plantings (trees, shrubs) that could interfere with the pipe coating or complicate access
• No excavation, grading, or soil disturbance within the corridor without written notice to the operator
• No changes in the grade above the pipe that could alter the depth of cover

These restrictions exist because an undetected breach of the pipe coating or damage to the pipeline from excavation can create serious safety hazards.

Blast zones and setback requirements

For high-pressure transmission pipelines, federal regulations establish potential impact radius calculations that determine the area that could be affected by a rupture or ignition event. These calculations are used in operator safety programs and can affect future permitting for structures or subdivisions near the pipeline corridor.

Compensation considerations

A transmission pipeline easement offer should account for the permanent easement rights, the temporary construction easement, crop and timber losses during construction, damage to tile drainage or irrigation systems, damage to fencing, and severance damage — the reduction in value to the portions of your property affected by the pipeline's presence.

Restoration after construction is also worth negotiating specifically. Standards for topsoil restoration, drainage, and surface condition can vary significantly and should be spelled out in writing before you sign.

If you are in an active pipeline easement negotiation, speaking with an attorney who handles right-of-way matters is the most important step you can take before signing anything.