N.Y. Real Property Law § 442-d: Actions for commissions; license prerequisite

§ 442-d. Actions for commissions; license prerequisite. No person,

copartnership, limited liability company or corporation shall bring or

maintain an action in any court of this state for the recovery of

compensation for services rendered, in any place in which this article

is applicable, in the buying, selling, exchanging, leasing, renting or

negotiating a loan upon any real estate without alleging and proving

that such person was a duly licensed real estate broker or real estate

salesperson on the date when the alleged cause of action arose.