Boundary marking is the practice of establishing clear, visible markers that show the edges of a property. Normally, a professional surveyor uses equipment to set iron or concrete corner posts accurately. Surveyors also leave blazes or hack marks on trees between corner markers. Over time, these hack marks become very difficult to see. Paint is commonly used to reinforce these marks and must be reapplied every 5–10 years.
Defining boundary lines with paint is extremely important for protecting property rights by creating clear evidence of where one property ends and another begins. It also helps avoid disputes with neighbors over driveways, dog pens, buildings or other types of encroachment. In South Carolina, the purple paint law states that marking property boundaries with purple paint is legally equivalent to posting “No Trespassing” signs. This ensures your rights are protected and enforceable against hunting, trail riding or other unauthorized entry. While posting signs is still permissible, signs fade, weather and deteriorate much faster than paint applied to trees.
To comply with the purple paint law in South Carolina, the purple markings must be vertical lines that are at least 8 inches long and 2 inches wide and must be between 3 to 6 feet off the ground. The marks must be on permanent objects, spaced no more than 100 yards apart and should be visible to anyone approaching the property.
Sustainable forest management also depends on clearly defined property lines. When harvesting timber, constructing and maintaining firebreaks and roads and setting up blinds or tree stands for hunting, it is important to know exactly where boundaries are located to avoid accidental trespass and potential damage to neighboring property.
Well-maintained boundaries help reduce the risk of costly disputes, legal fees and disturbances during timber harvest or other forest activities. They also tend to improve relationships with neighbors and reduce the likelihood of fines or trespass-related complaints.
Author (s)
Mike Windhorn, Area Forestry and Wildlife Agent
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