A New York Fence and Boundary Affidavit is a document used to establish a boundary between two pieces of land and to indicate who is responsible for maintaining the fence. There are two types of New York Fence and Boundary Affidavit: a one-party affidavit and a two-party affidavit. The one-party affidavit is used when one party is responsible for constructing and maintaining the fence and boundary, and the other party is not involved in the process. The two-party affidavit is used when both parties are involved in constructing and maintaining the fence and boundary. Both of these affidavits must be sworn to and notarized by the parties involved and filed with the local county clerk. The affidavit will provide details on the parties involved, the location of the fence and boundary, the type of fence installed, and who is responsible for its maintenance.