N.Y.C. Admin. Code § 5-384: § 5-384 Oath of commissioners of appraisal; filing thereof.

Such commissioners shall take and subscribe the oath or affirmation required by article thirteen of the constitution and shall forthwith file the same or a certified copy thereof in the office of the clerk of the county in which the land or any part thereof is situated, and shall forthwith file certified copies of such oaths in the office of the clerk of the county of New York, and in the register's office in any county in which there is a register's office and in which is situated any of the real estate sought to be taken or affected by the proceeding.