Property lines · Landowner rights · October 9, 2026

Purple Paint Law: Marking Property Lines for No Trespassing

What the purple paint law means, typical stripe size, height and spacing rules, and how to find your property line before you paint trees or posts.

If you have walked a fence line or hunted near private ground, you have probably seen trees or posts with a stripe of purple paint. In a growing list of states, that stripe is a legal “No Trespassing” sign. The purple paint law lets landowners post land with paint marks instead of (or alongside) metal or plastic signs that fade, blow away or get torn down. This guide explains what the marks mean, the typical size and spacing rules, how to paint a boundary correctly, and why you need to know where your property line really runs before you pick up a brush. The details are set by each state’s statute, so check the current law where your land sits before relying on paint alone.

What the purple paint law does

Trespass laws generally require some kind of notice before entry is a crime: a fence built to keep people out, a sign, or a direct warning from the owner. A purple paint statute adds paint marks to that list. When the marks follow the state’s rules, they count as notice in the same way a posted sign does. Someone who walks, drives or hunts past properly painted marks without permission can be treated as a trespasser even if no sign is in sight.

Arkansas is generally credited with the first purple paint law in 1989. Missouri followed, and Texas adopted its version in 1997 after lawmakers pointed to the Missouri statute as the model. Since then many more states have added purple paint to their posting rules. Purple was chosen because it stands out in woods and fields, is not a common forestry or survey marking color, and is visible to most people with color blindness. A few states use a different color for the same purpose, and some recognize paint only for certain uses such as hunting or fishing notice, so the label “purple paint state” can hide important differences.

Typical size, height and spacing rules

The exact numbers come from your state’s statute, but many follow a similar pattern. Texas Penal Code section 30.05 is a good example of the common format:

Several other states copied the 8-inch vertical stripe and the 3-to-5-foot height. Some also let owners paint the top of fence posts instead of a stripe, with closer spacing for painted posts. Others set different distances, require signs at certain entrances such as gates and roads, or limit paint to land outside large cities. Treat the Texas table as an illustration, not a rule for your state. Your state’s code, its wildlife agency or the county extension office can confirm the current wording.

Know your property line before you paint

Purple paint is only useful if it is on the right side of the boundary. Paint on a neighbor’s tree, or a line of marks that runs well inside or outside your land, creates confusion at best and a dispute at worst. Before you paint:

• Find the recorded boundary. Start with your deed and any recorded plat or survey. Our guide on finding a survey of your property online covers where those records live, and how to read a property survey explains the bearings, distances and corner symbols.
• Check the parcel map. A county GIS parcel layer gives a good picture of the shape and neighbors of your tract. Open your county on the Platbookmapper map to see it. Remember that GIS lines are approximate and are not a survey.
• Locate the corners on the ground. Iron pins, pipes, stones and blazed witness trees mark many rural corners. See how to find property corners and finding property boundaries in the woods.
• Hire a surveyor when it matters. If corners are missing, the old fence wanders, or a neighbor disagrees, a licensed land surveyor can stake the line before you mark it.

Keep the marks on trees and posts that are clearly on your side of the line. Boundary trees that straddle the line belong to both owners in many states; our post on trees on a property line explains why painting a shared tree without your neighbor’s agreement is a poor idea. Some states also require every owner’s consent before a shared fence is painted as posted.

How landowners usually apply the marks

1. Pick a durable paint. Many owners use an exterior oil-based or latex paint in a bright purple, or a purpose-made boundary marking paint. Spray cans are fast but fade sooner on bark.
2. Prepare the surface. Scrape loose bark scales lightly with a bark scraper or wire brush so the paint bonds. Do not cut into the living wood.
3. Measure the height. Mark a stick at the minimum and maximum heights your statute allows and hold it against each tree or post so every stripe lands in the legal window.
4. Paint the stripe to size. Make each vertical line at least as long and wide as the law requires. Bigger is fine; smaller may not count.
5. Face the approach. Put marks on the side people see as they walk or drive toward your land, such as roadsides, trails, creeks and the open edge of a field.
6. Pace the spacing. In woods, stay well under the maximum gap so one mark is always in view of the next. Add marks at gates, lanes and corners.
7. Repaint on a schedule. Faded or bark-covered marks can be argued as not readily visible. Check them each year and touch up as needed.

What purple paint does not do

Paint marks give notice; they do not change who owns what. A stripe on a tree does not move a boundary, settle a line dispute, or defeat a recorded easement, a public road, or a right of way across your land. If a neighbor has a legal right to cross on a driveway or access road, painted posts along that route do not end it. Paint also does not replace any special notice your state requires, such as signs at certain access points or written permission rules for hunting. And it will not undo a long period of open use that has already ripened into a claim; see what adverse possession is if that worry applies.

For hunters and visitors

If you see a purple stripe on a tree or a purple-topped post, assume the land beyond it is posted private property. Many states treat it the same as a sign even if no sign is present. Hunters scouting new ground can use parcel maps to see who owns what before they go; our guide to finding landowners for hunting permission and how to tell if land is public or private walk through it. State pages such as the Texas and Missouri landowner map guides point to free parcel layers where you can check a tract before you ask for permission.

Keep reading

• How to find property corners
• Find property boundaries in the woods
• Trail cameras for trespass on vacant land
• What is a hunting lease?

• Topics on this page
• size and spacing rules
• finding your property line
• painting the marks
• what paint does not do
• FAQ

← All posts · Open the map