N.Y. Real Property Actions & Proceedings Law § 522 (2026)

§ 522. Essentials of adverse possession not under written instrument
or judgment. For the purpose of constituting an adverse possession not
founded upon a written instrument or a judgment or decree, land is
deemed to have been possessed and occupied in either of the following
cases, and no others:
  1. Where there have been acts sufficiently open to put a reasonably
diligent owner on notice.
  2. Where it has been protected by a substantial enclosure, except as
provided in subdivision one of section five hundred forty-three of this
article.