N.Y. RPT Law § 716

§ 716. Admission of percentage of full value at which real property\nis assessed. 1. Except in a proceeding to review a special franchise\nassessment, at any time after answer has been served or has been deemed\nmade and not later than twenty days before the trial, the petitioner may\nserve upon the respondent a demand for admission for the purposes of\nsuch proceeding that the percentage of full value at which other real\nproperty is assessed in the unit is a percentage specified in such\ndemand, but not in excess of ninety-five per centum. Unless the\nrespondent within fifteen days after service of such demand, or within\nsuch further time as the court may allow on motion on notice, serves and\nfiles a notice specifically denying that the percentage specified in\nsuch demand is correct, such percentage shall be deemed admitted.\n 2. After being served with such demand, if the respondent serves such\na notice of denial, and the petitioner thereafter proves that the\npercentage of full value at which other real property is assessed in the\nassessing unit is not in excess of the percentage specified in his\ndemand, he may apply to the court at or immediately following the trial\nfor an order requiring the respondent to pay him the reasonable expenses\nincurred in making such proof including the reasonable fees of experts\nand attorneys. Unless the court finds that there was good and\nsufficient reason for the respondent's denial, the order shall be made\nirrespective of the results of the proceeding.\n