Mississippi Code
Chapter 15 - Party Walls
§ 89-15-11. Party wall not to be removed or impaired in value

Any party wall which has been paid for, and is used as such, shall not be removed by either party without the consent of the other; nor shall it be so damaged or altered as to render it less valuable to either. And if either party violate this provision he shall be liable to the other as a trespasser for all damages that may be sustained.