Does Flower Mound's tree ordinance apply to a lot you're buying?

Yes, if the lot is vacant or you plan to build on it, subdivide it, or replat it. Flower Mound's tree ordinance (Chapter 94 of the Town's Land Development Regulations) covers undeveloped property and new construction, and it does not cover a lot that already has a finished single-family home on it. On a lot you intend to build on, any listed tree six inches or wider is protected, and a post oak 22 inches or wider is a specimen tree that needs a public hearing and a Town Council vote before it can come down.

That last sentence is the one that surprises people. I've watched buyers fall in love with a wooded acre on the west side, sketch a house and a pool right where three big post oaks stand, and only then learn that the trees get a vote. Better to know before you write the offer.

Why the rule lands on lot buyers and not on homeowners

Most towns regulate trees everywhere or nowhere. Flower Mound draws the line at development. The ordinance applies to all vacant and undeveloped property, to anything being subdivided or replatted, and to commercial sites. It expressly excludes property "already developed for single-family and two-family residential uses."

The Town says it plainly in its own FAQ: once a property is developed and has a certificate of occupancy, the tree ordinance no longer applies, and an owner could remove any tree that sits outside the floodplain. So the family in a 1998 home in Bridlewood can take out a declining oak without a Town permit (their HOA may still have something to say). The buyer of the empty lot two streets over cannot.

That means the ordinance matters most in three situations:

• A vacant lot or acreage tract. Much of what's left is the wooded Cross Timbers land on the west side, which is exactly where the big post oaks are. If you're shopping there, start with what's available on an acre or more in Flower Mound.
• A teardown or major rebuild. This one is a gray area. The ordinance excludes lots already developed with a home, but a new building permit can bring the tree survey back into the picture. Ask Environmental Services how they'll treat your specific lot before you close, and get the answer in writing.
• A split or replat. Carving one tract into two puts the whole thing back under the ordinance.

One more wrinkle. The current ordinance took effect October 6, 2008, and it exempts subdivisions whose plats were recorded before that date. Those older-platted lots fall under the Town's earlier tree rules instead, which the Town still publishes separately. Two vacant lots a mile apart can be governed by two different rulebooks, so the plat date is one of the first things I look up.

Protected, specimen, and historic: the three labels that decide everything

The ordinance sorts trees into tiers, and each tier has its own process.

Protected trees are any species on the Town's lists that measure six inches or more across and stand at least ten feet tall. The lists include post oak, blackjack oak, live oak, Shumard red oak, bur oak, cedar elm, American elm, pecan, and about two dozen others. Protected trees inside the buildable area of your lot can come out once you have an approved building permit, with no separate tree removal permit. You do owe a replacement: one new tree of two and a half to three inches for each one removed, or a cash payment in its place if the Town agrees.

Specimen trees are the big ones, and the size depends on the species:

• Small-list trees (redbud, Mexican plum, yaupon holly): 13 inches or more
• Medium-list trees (cedar elm, blackjack oak): 19 inches or more
• Large-list trees (live oak, red oak, bur oak, pecan): 25 inches or more
• Post oak, which gets its own category: 22 inches or more

Specimen trees are the only ones that go through the full removal permit, and the buildable area doesn't excuse them. The request goes to the Environmental Conservation Commission, then to Town Council. The standard is strict: the commission isn't supposed to recommend approval unless the property "cannot reasonably be developed" without removing the tree.

Historic trees are designated one at a time by Town Council. Removing one takes a three-fourths vote of both bodies.

What isn't protected at all: species that aren't on the lists. The Town names cottonwood, hackberry, and eastern red cedar as examples. And a tree that a registered arborist certifies in writing as dead, dying, diseased, or hazardous doesn't count as protected or specimen, subject to the Town's review.

Council does say no. In June 2025 it approved removing two specimen trees for a project near Lakeside Parkway and denied a third, a 39.5-inch post oak, according to the Cross Timbers Gazette. The developer redrew the plan around it.

What removal costs, and what skipping the permit costs

For a specimen tree, here's the process as the Town publishes it:

1. Hire a certified arborist, certified forester, or registered landscape architect. The Town requires one of them to prepare the tree survey and submit the application.
2. File at least 30 days before the commission's monthly meeting (first Tuesday of the month).
3. Pay the application fee: $250 per specimen or historic tree, capped at $1,000 per application, plus $200 per notice sign.
4. Post the sign on the lot 15 days before the hearing, one for every 500 feet of street frontage.
5. Go to the commission, then to Town Council.

Realistically that's two months or more, which is longer than any option period. It belongs in your timeline before closing or in your expectations after it, never in the gap between.

If the removal is approved, you owe mitigation. For a specimen tree it's replacement trees totaling twice the width of what you removed. Take a 30-inch post oak: 30 x 2 = 60 caliper inches, which is 20 new three-inch trees, planted where the Town approves or paid as a per-inch cash value that Town Council sets. You earn credits against that for the trees you save. Preserve a 22-inch post oak elsewhere on the lot and it's worth six tree credits.

Now the number that should get your builder's attention. Removing a specimen tree without a permit carries a penalty of $500 per caliper inch plus replacement at ten times the width. That same 30-inch post oak becomes a $15,000 penalty and 300 inches of replacement trees. For a protected tree it's $250 per inch and five times. And the ordinance treats a tree killed by construction damage the same as one that was cut. A trench through the root zone or a pallet of brick stacked against the trunk can trigger it.

That's why the fencing rules exist. Before any site work, protected trees get a four-foot safety fence at the drip line and specimen trees get a six-foot chain-link fence. No construction activity under the canopy without the Town's written approval.

These rules may tighten. The Environmental Conservation Commission spent late 2025 and early 2026 reviewing the ordinance, including whether to lower the post oak specimen size from 22 inches to 18, and directed staff to draft language for Town Council. The published code still reads 22 inches as of this writing. If you're buying a lot now and building next year, design for the stricter number.

What to check before your option period ends

This is the sequence I walk lot buyers through. It fits inside a normal option period if you start on day one.

• Find the plat date. Before or after October 6, 2008 tells you which tree rules govern.
• Walk it with an arborist. Have them measure and flag every tree that's at or near specimen size, and note anything that's dead or declining. A few hundred dollars here can redirect a seven-figure plan.
• Overlay the trees on your building site. A boundary survey usually won't show them, so ask for the trees to be located. I cover the rest of that decision in whether you need a new survey when buying in Flower Mound. Then put your house, driveway, septic field, and pool on the same sheet.
• Check the floodplain line. The buildable area excludes FEMA floodplain, and trees there are treated differently.
• Ask about clearing history on agricultural land. If 20 or more protected trees came off an ag-zoned tract within 12 months, the ordinance bars rezoning or a development application for 60 months. Ask the seller in writing.
• Call Environmental Services at 972.874.6340 with the address. They'll tell you how they'd treat the lot.
• Read the deed restrictions too. An HOA or architectural committee can protect trees the Town doesn't. If you're also planning a second structure, the rules in building a guest house on a Flower Mound lot stack on top of these.

One planting note for the other end of the build. Before the Town issues your certificate of occupancy, a lot of 10,000 square feet or more needs at least three trees of two and a half to three inches, with one in the front yard. Trees you preserved can help you get there.

Frequently Asked Questions

Can I cut down a tree in my own yard in Flower Mound?

If your lot already has a finished single-family home with a certificate of occupancy, the Town's tree ordinance does not apply and no Town tree removal permit is required for a tree outside the floodplain. Check your HOA's rules and call 811 before any stump work. The ordinance applies to vacant lots, new construction, and property being subdivided.

What size tree is protected in Flower Mound?

On property the ordinance covers, a listed species is protected at six inches in width and ten feet in height. It becomes a specimen tree at 13, 19, or 25 inches depending on the species list, and at 22 inches for a post oak. Specimen trees need a removal permit reviewed by the Environmental Conservation Commission and Town Council.

How much is the fine for removing a tree without a permit in Flower Mound?

The ordinance sets a penalty of $250 per caliper inch for a protected tree, $500 per inch for a specimen tree, and $750 per inch for a historic tree. Replacement trees are owed on top of that at five, ten, and fifteen times the width removed. A tree that dies from construction damage is treated the same way.

How long does a Flower Mound tree removal permit take?

Plan on two months or more for a specimen tree. The application is due 30 days before the Environmental Conservation Commission's monthly meeting, a notice sign has to be posted 15 days ahead, and the request then goes to Town Council for a decision.

Do I need a tree survey to build a house in Flower Mound?

Yes. A tree survey has to accompany the building permit application for a home on an undeveloped residential lot. On lots of one acre or more it must be the full survey, signed by a certified arborist, certified forester, or registered landscape architect, with every specimen tree tagged and located.

Know the trees before you fall for the lot

The trees are a big part of why west Flower Mound looks the way it does, and the Town intends to keep it that way. Good stewardship of a piece of land starts with knowing what's on it. A wooded lot is still a wonderful place to build. You only want to find out where the house can go before you own it, not after.

If you're weighing a lot or a teardown as part of your next move, schedule a free Move-Up Strategy Call ... thirty minutes, no pitch, just a clear-headed look at where you are and what your best next move looks like.

This article is general information, not legal, tax, or engineering advice. Ordinances change, and the Town applies them lot by lot. Verify your specific property with Town of Flower Mound Environmental Services, a certified arborist, your title company, and where appropriate a licensed Texas attorney.

About Brian White

Brian White helps families in Northwest DFW make their move-up cleanly, selling and buying in one synchronized step. He built BlueFuse Group on a simple standard: other-first service, proactive at every turn, faith and excellence in equal measure. Brian has been married to Tisha for 27 years and is dad to three adult sons. When he's not protecting a family's equity or untangling a tight closing timeline, you'll find him chasing a round of golf or at Valley Creek Church.

Schedule a Move-Up Strategy Call ... no pitch, just a clear-headed look at your next move.