Legal Question in Real Estate Law in Georgia

You should file a lawsuit for trespass. However, you should first consult with a local attorney. Litigation is not an easy process.

See a lawyer. Charlie Fields is somewhat incorrect or imprecise in his answer. But you may be able to sue for encroachment or damages, depending on how long ago it happened and whether you allowed it to happen. Generally, prior to suit, you would have a lawyer seek to negotiate either removal of the encroachment or a sale of property to the other party where they pay you for the land. In some cases you might also have a cause of action against the company building the encroachment.