Got Trespassers? Paint Purple

August 31, 2011

There’s a colorful new law in town.

Governor Pat Quinn last week signed Senate Bill 1914, which allows Illinois landowners to use purple paint markings on trees or posts on their property as a “no trespassing” sign.

The “Purple Paint Law,” which can be used by lessees as well, is designed to protect homes from trespassing.

Provisions of the new law require that the purple paint marks used to designate “no trespassing” notice must be either:

1. A vertical line of at least 8 inches in length. The bottom of the mark must be between 3-feet and 5-feet high. Each mark shall be no more than 100 feet from another such mark and be readily visible to any person approaching the property.


2. A post capped or otherwise marked on at least its top 2 inches. The bottom of the cap or mark must reach a height between 3 feet and 5 feet 6 inches. Marked posts can be no more than 36 feet apart and be readily visible to any person approaching the property. Prior to applying a cap or mark that is visible from both sides of a fence shared by different property owners or lessees, all such owners or lessees must agree to the decision to post their own property.

Purple paint can be used to cut down on trespassing, but additional notice is still required through next year.

Until January 1, 2013, landowners who use purple marks must also include a “no trespassing” notice on the main entrance to the property.

Trespassing on property marked for “no trespassing” is a Class B misdemeanor, which is punishable by up to six months in jail and/or fines of up to $1,500.

The new “Purple Paint Law” does not apply to real property located in a municipality of over 2,000,000 inhabitants.

For more details on the new law, visit

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