Transmission Lines on Commercial Land: Easements, Clearances & Survey
"Texas, often referred to as the Lone Star State, is a thriving hub for economic growth and innovation, making it an attractive destination for commercial real estate investment." - Chris Evans
High-Voltage Lines Cross the Tract. What Does the Survey Need to Show Before You Design?
The site is 18 acres of flat industrial land with excellent truck access. A row of steel transmission structures runs diagonally across the back third. The broker says the lines are "just utilities" and that the area underneath can be used for trailer parking. The engineer is less sure, and the lender wants to know exactly what's allowed.
Overhead transmission lines carry restrictions that are different from a typical buried utility easement. The rules come from the line's owner and the recorded easement, and they can change what you're able to build, pave, store, or grade. A survey is the starting point for finding out.
Why Transmission Easements Are Different
A recorded easement gives a utility the right to maintain a line across your land and keep certain things out of the corridor. What's allowed inside it depends on the document and on the utility's own guidelines. One Texas utility's published guidance, for example, says buildings, additions, swimming pools, above-ground fuel tanks, tall signs, and tall trees are prohibited in a right-of-way. According to the encroachment guidelines from AEP Transmission, parking lots are usually acceptable under lines up to 161 kV, but landowners should contact the utility before parking vehicles under or near higher-voltage lines. It also says that changing ground elevation, including adding fill or building roads that raise the grade, requires the utility's prior written approval, and that dirt or spoil can't be stored in the right-of-way even temporarily.
That's one utility's published position, not a rule that applies to every line. The owner of the line on your tract may have different guidelines, and the recorded easement may add its own limits. Treat the example as a reminder of what to ask, not an answer.
What the Survey Should Locate
A survey of a tract crossed by overhead lines should help your team understand where the corridor is and what's inside it:
The easement boundaries. Plotted from recorded documents, so you can see the width and how it crosses the tract.
Structure and pole locations. The towers or poles themselves, which often matter more for layout than the wires.
The line's path. How the corridor crosses the property relative to the property lines, roads, and planned improvements.
Existing improvements. Buildings, paving, fences, and signs near or inside the corridor.
Topography. Existing grade, which matters because filling inside the corridor can require approval. A topographic survey gives your engineer that base.
Additional easements. Access easements to reach the structures, or other recorded rights crossing the same area.
If your project needs vertical clearance information, such as the height of the wires over proposed paving or truck circulation, that's a more specialized request. Ask your surveyor whether it's something to include and what it would involve.
Where Projects Get Into Trouble
Assuming the corridor is usable. Parking, storage, and truck courts under lines may need the utility's sign-off.
Missing the access routes. Utilities need to reach their structures, and blocking that access can create problems.
Grading changes. Raising or lowering grade near a structure can trigger approvals.
Landscaping. Tall trees and certain plantings may not be allowed.
Unrecorded rights. Older lines sometimes have easements that don't show up neatly in the title commitment.
Our discussion of utility easements and Houston commercial properties covers related issues, and our overview of easement and right-of-way surveys in Texas explains how recorded rights get plotted.
What It Means for Industrial and Warehouse Sites
Transmission lines often cross the exact kind of flat, open land that industrial developers like. For a warehouse or distribution project, the corridor can chop a rectangular site into awkward pieces, push the building to one side, and limit trailer storage or future expansion. A 40-acre tract with a 150-foot-wide corridor through the middle doesn't behave like a 40-acre tract. The numbers in that example are illustrative, not from any specific site.
The practical response is to put the corridor on the drawing before anyone sketches a building. Once it's plotted, your engineer can test several layouts, and you can see which ones leave enough usable area. If none do, you've learned something valuable before closing.
Talk to the Line Owner Early
The survey tells you where things are. The utility tells you what's allowed. Once the survey identifies who owns the line, your team can contact the owner with the proposed layout and ask for its written position before design is final. That's much easier before the site plan is submitted than after construction starts.
What the Buyer's Team Should Ask
Who owns the line, and what do the recorded easement terms say?
Which parts of the corridor can be used for parking or storage, if any?
Will grading or fill be needed inside the easement?
Is there an existing agreement with the utility that transfers to the buyer?
How much usable area is left once the corridor is excluded?
Give the Surveyor What They Need
For a tract with overhead lines, send the title commitment, all recorded easements, any prior survey, and a preliminary site layout. If you know the utility's name or have correspondence from it, include that. The more the surveyor knows about your plans, the better the drawing can support them.
Buying or developing a Texas tract crossed by transmission lines? Contact South Texas Surveying with the property location, approximate acreage, a copy of the title commitment and easements, and a rough site layout, so our team can scope a survey that plots the corridor and the structures against your plans.
