N.Y.C. Admin. Code § 28-207.4.2: § 28-207.4.2 Enforcement of vacate order.

All orders issued pursuant to section 28-207.4 shall be posted upon the premises and made available to the public. Upon the posting of an order upon the premises, officers and employees of the police department, the department, and other authorized officers and employees of the city shall immediately act upon and enforce such order. The police department shall provide all reasonable assistance to the department and other authorized officers and employees necessary to carry out the provisions of section 28-207.4. A copy of the vacate order may be filed with the county clerk of the county in which the premises is located. A record of the vacate order shall be maintained by the department. When active, the vacate order shall also be documented on the department's website, which is accessible to the public. Such documentation on the department's website shall constitute notice of any active vacate order to any owner or subsequent owner, who shall be subject to such order.