N.Y. PEN. LAW § 150.05 : NY Code - Section 150.05: Arson in the fourth degree

1. A person is guilty of arson in the fourth degree when he recklessly
  damages  a building or motor vehicle by intentionally starting a fire or
  causing an explosion.
    2. In any prosecution under this section, it is an affirmative defense
  that no person other than the defendant had a possessory or  proprietary
  interest in the building or motor vehicle.
    Arson in the fourth degree is a class E felony.