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Oncor or CoServ, depending on the address

Trees Near Power Lines in Frisco

Three different parties can be responsible for one tree under one wire. Sorting out which is the first step, and it is done from the ground.

Start With Which Utility

The City of Frisco's resident guide lists two electric delivery companies: Oncor and CoServ. Which one owns the poles and wires at your address is printed on your electric bill.

Oncor: 888-313-6862. CoServ electric emergencies: 855-938-3496. A line that is down or arcing is a 911 call.

Whether your street has overhead lines at all varies across the city. Where the wires are underground there is still equipment to keep clear: CoServ asks for ten feet of open space in front of a padmount transformer and three feet at the sides and back.

City of Frisco New Resident Guide; Oncor and CoServ vegetation management pages, read October 2026.

Tree branches grown around the overhead wire that runs from a wooden utility pole to the corner of a house

Who Trims What

The wireWho clears trees from itWhat the published rule says
Pole-to-pole lines (Oncor)Oncor's approved line-clearance contractors"Per Texas state law, only line clearance-certified personnel who are approved by Oncor are authorized to work (themselves or their equipment) within 6 feet of high-voltage lines." Oncor clears a minimum of 10 feet from primary distribution lines.
Pole-to-pole lines (CoServ)CoServ's contractor crewsCrews work year-round and CoServ says it trims trees near lines about once every three years. Members can file a vegetation request for trees close to lines or equipment.
The service drop: pole to your house (Oncor)The customerOncor's wording: "customers are responsible for maintaining them." It will arrange a temporary disconnect and reconnect so the work can be done with the line dead.
Everything else on the treeThe owner, through a tree serviceLimbs well clear of any wire are ordinary tree work.

Oncor's own instruction to customers is blunt: never attempt to trim trees from pole to pole. This site adds nothing to that except agreement. Nobody without line-clearance qualification should be in a tree, on a ladder or holding a pole saw near an energized wire.

How a Job Near a Wire Usually Goes

  1. 1

    Look, from the ground

    Note which wire the tree is near: the high lines between poles, or the single line running to the house.

  2. 2

    Call the utility

    Report limbs in the pole-to-pole lines. For the service drop on Oncor, ask about a temporary disconnect.

  3. 3

    Then the tree service

    With the line cleared or de-energized, a tree crew does the remaining pruning or removal.

Expect the utility's cut to look different from a tree service's. Line-clearance crews cut for distance from the conductor, and Oncor says plainly that after a storm it removes only what it must to restore service and leaves the rest of the tree and the debris. What remains may need a tree crew to make it balanced and sound.

Planting under a wire

The lasting fix is a tree that never reaches the line. CoServ publishes a list of twenty species that mature at 15 to 35 feet for planting near overhead lines. Frisco's planting rules add four feet of distance between a trunk and utility lines.

Questions People Ask First

The utility cut my tree badly. Can it do that?

Utilities hold easements that allow them to keep lines clear, and they cut for clearance. A tree service can often improve what is left.

Will the utility remove the whole tree?

Rarely. Its job is the line. Removal of a tree on your lot is yours to arrange once the wire is safe to work near.

A limb is resting on the line to my house but the power is on. What now?

Stay away from it and call the utility. Do not touch the limb, the wire or anything metal in contact with either.

Do tree services work near wires at all?

Some employ or subcontract qualified line-clearance workers. Most coordinate with the utility. Either way, tell them about the wire when you call so the right crew is sent.

Tree Work With a Wire Nearby

Mention the wire and which utility is on your bill. The request goes to an independent tree service that will coordinate the order of work.

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