Do I need a permit to trim a tree in McKinney?

The City's tree permit covers removing, transplanting and clearing trees. Routine pruning isn't one of the permit types on the City's form. If you're planning heavy cutting on a large tree, ask the City first.

How do I measure a tree's trunk diameter?

Wrap a tape measure around the trunk 4.5 feet above the ground and divide that number by 3.14. A trunk that measures 19 inches around is about 6 inches across. Use the calculator on this page to do the math.

What is a quality tree in McKinney?

A tree whose species is on the City's Quality Tree List, Table 4-2 of the Unified Development Code. The list is printed in the City's Tree Permit Application and Checklist.

Who decides how many replacement trees I need?

The City of McKinney's Urban Forester. The City has a mitigation calculator, but its numbers are subject to the Urban Forester's review and final decision.

Do You Need a Permit to Remove a Tree in McKinney, TX?

Which trees are protected in McKinney

Quality trees with a trunk 6 to 41 inches across. "Quality" means the species is on the City's Quality Tree List.
Every tree with a trunk 42 inches across or more, whatever the species.

Trunk size is measured at "breast height", 4.5 feet above the ground. Arborists call this the DBH, short for diameter at breast height.

Measure your tree's trunk

Wrap a tape measure around the trunk 4.5 feet up. Enter that distance around, in inches, and this works out the diameter the City uses.

Distance around the trunk (inches)

Enter a measurement to see the trunk diameter.

Without JavaScript: divide the distance around by 3.14. Under 6 inches: below the protected size. 6 to 41 inches: protected if the species is a quality tree. 42 inches or more: protected whatever the species.

What happens when a protected tree is removed

Removing a protected tree with an approved tree permit or tree preservation plan comes with mitigation. That means planting replacement trees on the property or paying into the City's reforestation fund. The City offers a calculator for estimates, but the Urban Forester makes the final determination.

How to apply for a tree permit

Measure the trunk and identify the species. A tree crew or a certified arborist can help.
Mark the tree and its trunk diameter on a plot plan or an aerial photo of your lot. The City's checklist lists exactly what this exhibit has to show.
Submit the tree permit online through the City's Citizen Self Service (CSS) portal.

Dead, dangerous and storm-damaged trees

If a tree is an immediate danger, call the City's Development Services and explain the situation before it's cut. Take dated photos of the damage first. They help with both the City and your insurer.

Check your HOA as well

HOA rules are separate from the City's. In Stonebridge Ranch, for example, many outdoor projects need an approved Modification Application before work starts. The committee meets twice a month, the rules allow it up to 30 days to review, and it aims to decide within 14 business days. Some villages there have stricter rules of their own. If you live in any other HOA community, check its rules too.

Sources

City of McKinney, Tree Permit Application and Checklist (revised June 25, 2026)
City of McKinney Development Services, Tree Preservation
Stonebridge Ranch Community Association, Modifications

Rules change. If you're about to remove a large tree, confirm with the City first.