Arborist Services in Mandeville, LA

In Mandeville, pruning a big oak is a regulated job. The city’s tree ordinance puts permits on the removal of protected trees and on heavy pruning of larger live oaks, which is why hiring an arborist in Mandeville is often the first step before any cutting at all. A good assessment tells you what the tree needs, what the city expects and what you can safely leave alone.

We help Mandeville homeowners figure out what’s going on with their trees and what to do about it. This page covers the assessment side of our work. For removals, trimming and everything else in town, see our tree service in Mandeville page.

A canopy the city takes seriously

The city describes Mandeville as having “a lush canopy of live oaks, magnolia, cypress and pines,” and anyone who has driven under the oaks on Lakeshore Drive or walked the side streets of Old Mandeville knows the look. The city’s current tree rules are in Ordinance 25-11, adopted in October 2025.

The lakefront gives these trees a hard life at times. The National Weather Service notes that Katrina’s surge reached Northshore communities including Mandeville, and that in 2021 Ida’s surge topped the seawall in Mandeville. A tree that came through a storm can carry damage that only shows up later, in a dying limb, a crack at a branch union or thinning at the top of the crown.

Pines deserve their own mention. LSU AgCenter notes that stressed and storm-damaged pines attract Ips engraver beetles and southern pine beetles. Pitch tubes on the bark or boring dust around the base are signs worth having checked, especially where several pines grow close together.

What an assessment covers

We start by walking the property with you and hearing what worries you about the tree. Then we look at it the way you’d look at a house before buying it: from the ground up.

• Roots and base. Soil heaving, fungus at the root flare, damage from past trenching or paving.
• Trunk and main limbs. Cracks, cavities, included bark in forks, old wounds that haven’t closed.
• The crown. Deadwood, thinning, heavy limbs over the roof, driveway or street.
• The setting. What’s underneath, what a failure would hit, and whether utility lines run through the canopy.
• Species and size. Whether the tree is a live oak, bald cypress or southern magnolia, and how the trunk measures at chest height. In Mandeville that decides whether the city’s rules apply.

From there, you get a plain recommendation. That might be leave it alone, prune specific limbs, consider support such as cabling (see our tree support systems page), or plan a removal. You also get a free written estimate for any work we recommend.

Pruning a big live oak in Mandeville

This is the rule to know before any big pruning job. Under Ordinance 25-11, pruning the primary or secondary branches of a live oak that measures 12 inches DBH or more requires a permit, and the ordinance says the work must be done “by a state licensed arborist or a state forester.”

The rule refers to primary and secondary branches, so read the ordinance’s wording or ask the city’s Landscape Inspector whether your planned cuts count. For removal of a protected live oak, bald cypress or southern magnolia at six inches DBH or more, a separate removal permit comes from the Landscape Inspector. In the R-1, R-1X and R-2 districts, the ordinance also calls for keeping at least half the trees over three inches DBH in the yard setbacks.

The city’s tree removal application asks for the contractor’s arborist license number, which ties back to the state license issued by LDAF, and an HOA letter where one applies.

If your property is outside Mandeville city limits in unincorporated St. Tammany Parish, the city ordinance doesn’t govern it. Fontainebleau State Park, for example, sits outside city limits. St. Tammany Parish Planning and Development can tell you what applies there.

How to vet a state licensed arborist in Mandeville

Because the city’s rules lean on state licensing, it helps to know how that system works. The Louisiana Department of Agriculture and Forestry says “Arborist licenses are required if you work on trees for a fee.” Under state law, a separate utility arborist license covers work in utility rights-of-way.

Before you hire anyone for paid tree work, it’s reasonable to ask for their LDAF license number and check it on the LDAF arborist licensing page. For Mandeville jobs that need a permit, you’ll want that number handy anyway. Homeowners should also consider getting the scope in writing and asking for proof of insurance before work begins.

If limbs are touching power lines, call the electric provider on your bill before anyone works near them.

When the answer is removal

Sometimes the assessment shows a tree that can’t be kept safely. Our page on tree removal in Mandeville explains how that job is planned around the permit rules, and large or storm-damaged trees that need a crane are handled with our fulfillment partner Gulf Coast Tree Service. Once the tree is down, stump grinding in Mandeville clears the way for a replacement tree. To the north, our Covington arborist services page covers that city’s different rules, and to the east there’s our Slidell arborist page. The main arborist services page covers New Orleans.

Frequently asked questions

Who is allowed to prune the big live oak in my Mandeville yard?

For a live oak of 12 inches DBH or more, Ordinance 25-11 says pruning primary or secondary branches needs a permit and must be done by a state licensed arborist or a state forester. Ask whoever you hire for their LDAF license number and confirm it before the work is scheduled. The Landscape Inspector can clarify whether your planned cuts count.

Are southern magnolias protected in Mandeville?

Yes. Along with live oak and bald cypress, southern magnolia is protected in every zoning district once the trunk reaches six inches DBH. Removing one calls for a permit from the Landscape Inspector, and permitted removals come with replacement planting. An assessment can measure the trunk and tell you where the tree stands before you make plans.

My HOA approved removing a tree. Do I still need the city?

Most likely, if the tree is protected. HOA approval and city approval are separate. In fact, the city’s removal application asks for an HOA letter where one applies, so the two usually travel together. Plan on both, and check with the Landscape Inspector if you’re unsure whether your tree falls under the ordinance.

Should I have my lakefront trees checked after a big storm?

It’s a sensible step. Surge and wind from storms like Ida can stress trees in ways that don’t show right away. Look for new lean, cracked or hanging limbs, fresh fungus at the base, or a crown that thins over the following months. If you see any of those, an assessment can tell you whether pruning will do or the tree has become a risk.

Book a Mandeville tree assessment

If you have questions about a tree, a permit or a pruning plan, call 504-732-1166 or set up a free estimate. We’ll look the tree over with you and put our recommendation in writing.