N.Y. C.P.L.R. 213-a

§ 213-a. Residential rent overcharge. No overcharge penalties or\ndamages may be awarded for a period more than six years before the\naction is commenced or complaint is filed, however, an overcharge claim\nmay be filed at any time, and the calculation and determination of the\nlegal rent and the amount of the overcharge shall be made in accordance\nwith the provisions of law governing the determination and calculation\nof overcharges.\n