Trespass is an illegal entrance into another person’s immovable property to violate the peaceful living of the people in there. If you are allowed to go in there, it will never be an offence. That is why the offence is compoundable. Though the damaged person has lodged a complaint with police against you or has prosecuted you in the court, he/she can withdraw the complaint or withdraw the prosecution and, then you will be free of the offence.
If you remove the boundary mark of the land to gain the ownership of the part, you will be guilty of trespass also, punishable with imprisonment not more than three years and fine not exceeding six thousand baht.
If the trespass is committed forcefully or by two or more person or at night, the imprisonment is as high as five years and the offence is not compoundable.