N.Y. High. Law § 120
If the board of supervisors is unable to acquire land by purchase as provided for in section one hundred nineteen of this chapter, the board may present to the county court of the county or to the supreme court, at a special term thereof, to be held in the judicial department in which said county is located, a petition for the appointment of three commissioners of appraisal to ascertain and determine the compensation to be paid to the owners of the land to be acquired and to all persons interested therein. Such petition shall describe the land to be acquired with reference to the map upon which the same is shown which shall be annexed to such petition. A copy of such petition and map shall be filed in the office of the county clerk. Such petition shall be signed and verified in the name of the board of supervisors, by the chairman or a member thereof designated for that purpose by resolution. Notice of presentation of such petition to such court shall be given by the petitioner by publishing such notice in two newspapers published in such county, once in each week for two weeks successively preceding the day of such presentation, and also at least eight days preceding the day of such presentation by serving a copy of such notice, personally or by mail, on the occupant or owner of the land to be acquired, and by posting a copy of said notice in not less than three public places in each town in which property to be acquired is located.
N.Y. High. Law § 120