You generally cannot build a house directly under power lines, and building near them is only possible after you have cleared the recorded utility easement, met national clearance codes, satisfied local zoning, and obtained written approval from the utility. Whether it’s realistic on your specific lot comes down to three variables: the voltage of the lines, the width of the easement recorded against your deed, and what your municipality adds on top. On many lots the buildable area that remains after those restrictions is too small to make a house work.
The Easement Is the First Wall
A utility easement is a legal right recorded in your property’s public records that gives the utility company permanent access to a strip of your land. You still own the ground, but the company can install, maintain, and replace equipment there, and it can bring heavy vehicles and crews in for repairs without your permission or advance notice.
The practical consequence is simple: you cannot put a permanent structure inside the easement. That rules out the house, a garage, a shed, a deck, a retaining wall, and an in-ground pool. Even raising the ground level with fill dirt can violate the easement by shrinking the clearance to the wires above.
Easement widths vary far more than most buyers expect. A standard distribution line serving a residential street usually sits inside an easement at least 20 feet wide. Transmission corridors are much larger. A 115 kV line might carry a 25 to 100 foot easement, a 230 kV line roughly the same or wider, and a 500 kV line can require 150 to 180 feet of clearance. On a typical residential lot, that can swallow most of the land.
Find out what you’re dealing with before you spend money on design. The deed usually describes recorded easements, and a title insurance policy will list them. For the actual boundaries on the ground, you need a survey or plat from a licensed surveyor showing the easement’s width and position relative to your lot lines. Don’t guess from where the poles happen to stand.
Clearance Rules That Apply Even Outside the Easement
Clearing the easement line is not the same as being free to build. The National Electrical Safety Code sets minimum distances between power lines and any structure, and states or utilities can make those distances stricter. Two measurements matter: the vertical distance between the lowest sag of the wire and the highest point of your roof, and the horizontal distance between the nearest wire and any part of the building.
Vertical Clearance
NESC Table 232-1 sets vertical minimums based on what’s underneath the lines. For power supply conductors, the minimum above a pedestrian surface is 11.5 feet, above a residential driveway 16 feet, and over public roads 23.5 feet. Higher-voltage transmission lines add more feet to those figures based on voltage.
For lines passing over a roof, the baseline is typically 12.5 feet above the highest point if the roof is not accessible under normal circumstances, and at least 13.5 feet if it can be reached by a door, stairway, or window. These are low-voltage baselines and rise substantially for transmission-level lines.
Horizontal Clearance
Horizontal clearance is measured from the nearest conductor to the closest part of the building, not from the pole. The NESC requires service entrance conductors to keep at least 3 feet of horizontal clearance from windows, doors, and fire escapes. Primary distribution and transmission lines require significantly more, and local utilities often enforce horizontal setbacks well beyond the NESC minimum so maintenance crews have a working buffer.
One point that architects sometimes miss: clearance is measured at maximum sag, when the conductor has expanded on the hottest days of the year. A line that looks comfortably high in January can hang several feet lower in August. Your design has to work against that worst-case position, not the wire on the day of the site visit.
Local Zoning and the Building Permit
The easement and the NESC set one layer of restrictions. Your local planning or zoning department adds another, and the stricter rule always wins. A municipality can impose setbacks from power line corridors that go beyond the utility’s own requirements, or height limits near transmission infrastructure that quietly rule out a second story.
You cannot break ground without a building permit, and the plans examiner will check compliance with zoning ordinances, setback requirements, height limits, and the building code. If the drawings show a structure too close to recorded utility infrastructure, the permit is denied regardless of what the utility company thinks of the design.
Call the building or planning department before you commission an architect. Ask specifically about overlay zones, special setbacks, or height restrictions that apply to lots with utility easements or near transmission corridors. That conversation can save thousands in redesign fees.
Getting the Utility Company’s Written Approval
Once you understand the easement, the clearance requirements, and the local code, you have to engage the utility directly. This is not optional. Most utilities require formal review of any construction planned near their infrastructure even when the proposed house sits entirely outside the recorded easement.
Submit a detailed site plan and construction drawings to the utility’s engineering department. The plans should show the proposed house, driveway, and accessory structures in relation to the power lines, poles, and easement boundaries. Engineers verify that the finished structure will maintain vertical and horizontal clearances and that the build itself won’t create safety hazards.
If the plans pass, the utility issues written permission to proceed. Some approvals come with conditions, such as on-site coordination during roof framing or chimney installation when the structure reaches its maximum height near the lines. Get the approval in writing and keep it in your project file. A verbal assurance from a field technician has no legal weight if a dispute comes up later.
What It Costs to Build Without Permission
Building inside a utility easement without approval, or encroaching on required clearance zones, gives the utility the right to demand that you stop work and remove the offending structure at your own expense. A utility that finds an unapproved structure in its easement will start with a request for voluntary removal and pursue legal action if the owner refuses.
The costs stack. Beyond demolition, if your work has reduced clearance between the ground and the wires, the utility may need to raise its lines to restore safe distances, and you’ll pay for that engineering. Working without a permit also triggers investigation fees from the building department, typically at least equal to the regular permit fee. If the structure violates easement terms recorded in your deed, you can face a lawsuit for damages on top of that. Utilities patrol their transmission and distribution corridors regularly, so an unauthorized structure near the lines will be spotted.
If the Lot Is Unbuildable As-Is
If the easement or the lines make the property unbuildable in its current configuration, you have two paths. Neither is cheap and neither is guaranteed.
Vacating or Narrowing the Easement
If the utility no longer uses the infrastructure in the easement, or has rerouted its lines, you can ask the company to formally release it. The utility reviews whether it might need the corridor in the future. If it agrees to release, you’ll typically need a signed release document, a plat amendment prepared by a licensed surveyor, and the release recorded with the county. Budget for surveyor’s fees, recording fees, and sometimes a utility processing fee. The process runs months, not weeks.
If the lines are still active but you want the easement narrowed or shifted, you’re asking the utility to give up rights it specifically acquired. Some utilities will negotiate, particularly if you can offer an alternative easement elsewhere on the property that still gives them maintenance access. Others will refuse.
Relocating the Lines
You can also ask the utility to relocate its lines, either by rerouting them across a different part of the property or burying them underground. The property owner almost always pays. Costs depend on voltage, the length of line being moved, whether trenching for underground burial is involved, and local soil and terrain. A simple overhead reroute of a distribution line starts in the low thousands and climbs quickly. Burying a line costs substantially more per foot than overhead work. Even after paying for relocation, the utility will usually require a new easement along the revised route, so you’re trading one restriction for another, and hoping the new configuration leaves enough buildable area.
What You Can Do Inside the Easement
If you can’t build in the easement, you might at least want to landscape it. That’s possible within limits. The utility has the right to remove or aggressively prune any tree or vegetation inside the easement that threatens its lines, and it doesn’t need your permission. Utilities conduct vegetation management on regular cycles, and anything tall enough to reach the conductors will be cut back or removed.
Shallow-rooted shrubs, ground cover, and gardens are generally acceptable as long as they don’t block vehicle access for maintenance crews. Tall trees are not. If you plant a tree that later has to come out because it encroaches on the conductors, the utility will remove it, and you have no legal claim to compensation for the loss. Plan for mature heights and stick to species that stay well below conductor height at full growth.
Whether It’s a Good Idea Even When It’s Legal
Legal is not the same as advisable. Proximity to high-voltage transmission lines consistently reduces property values. Studies across multiple countries show that homes within about 100 meters of a transmission line typically sell for 5 to 20 percent less than comparable properties farther away, and when a pylon or tower is visible from the property, the discount can exceed 20 percent. A 2026 survey of real estate professionals estimated an average price impact of roughly negative 10 percent for properties near high-voltage lines. The effect fades with distance; beyond about 200 meters, measurable discounts largely disappear, and distribution lines have a smaller effect than transmission towers.
The resale discount ripples into financing. Appraisers note the presence of power lines and easements, and a lower appraised value means less borrowing capacity. If you’re building as an investment or expect to sell within a few years, the math on a lot under or near transmission lines rarely works.
Health questions come up too. The World Health Organization’s position, based on decades of research, is that current evidence does not confirm any health consequences from exposure to low-level electromagnetic fields, and that if such fields have any effect on cancer risk, the increase would be “extremely small.”1World Health Organization. Radiation: Electromagnetic Fields The International Agency for Research on Cancer classified extremely low frequency magnetic fields as “possibly carcinogenic to humans” (Group 2B) in 2002, based on a statistical association with childhood leukemia in some epidemiological studies, though scientists have not concluded the association is causal, in part because animal and laboratory studies have failed to reproduce the effect.2National Center for Biotechnology Information. Occupational Carcinogens: ELF MFs Field strength drops off sharply with distance: directly beneath power lines, magnetic flux densities can reach several microtesla and electric fields as high as 10 kV/m, but at 50 to 100 meters those readings typically fall to background levels. If health concerns factor into your decision, distance is the most effective mitigation.