For example, your area may require signs to be a minimum size or there may be a minimum font size for them to legally apply to trespassers. Most areas will require the signage to be clearly legible and visible in order to be enforced. [1] X Research source

If you need to, walk the perimeter of your property with a notebook and pen to tally up how many signs you need. [2] X Research source Most properties will require more than one No Trespassing sign.

Your area may have specific requirements about the material your sign is made of.

Make sure that your customizations still meet the requirements of your community.

To effectively deter people from entering private property, post No Trespassing signs at eye-level or slightly higher for the best visibility. Make sure sign visibility isn’t limited by nearby trees or building.

As you circle your property, confirm that no areas have been left unposted.

Replace damaged or illegible signs as quickly as possible.

It’s always best to report trespassers to the police before taking action yourself.

Be sure to report any damage or stolen property immediately. This is especially important if you plan to prosecute the trespassers.