Property line disputes are a common source of conflict between neighbors in Massachusetts, particularly when fences, driveways, sheds, or landscaping encroach across boundary lines. One legal doctrine that often arises in these disputes is adverse possession, which can result in a transfer of ownership without a traditional sale or deed. What Is Adverse Possession? Under Massachusetts law, a person may acquire legal title to another’s property through adverse possession if they can prove actual, open, notorious, exclusive, and adverse use of