Can anyone suggest how to do the outside wall plastering which is 1 feet (12 inches) apart from neighbor wall. Is there any method or way? any spray kind of things?

My neighbour has enroached almost half feet of my land and constructed house and sold it to the person who is currently residing. When i went and asked to compensate for the same he is telling to give complaint to BBMP in legal manner and let it be on record and let engineer and other BBMP related p...