N.Y.C. Admin. Code tit. 27, ch. 2 § 27-2051.1

Prior to the expectant arrival of a weather emergency, a natural disaster event or after being informed about a utility outage which is expected to last for more than twenty-four hours, the owner of a residential dwelling where at least one dwelling unit is not occupied by such owner shall post the following information in common areas of the residential dwelling on signs of sufficient size to be seen: (i) whether the building is located in a hurricane evacuation zone as defined by the office of emergency management and if applicable, which zone the building is located in; (ii) the address of the nearest designated evacuation center; (iii) when a person should contact 911 and 311 during a weather emergency, a natural disaster event or the utility outage; (iv) whether during the utility outage, services such as potable water, corridor, egress, and common area lighting, fire safety and fire protection, elevators, charging locations for cellular telephones, domestic hot water, or heating and cooling will be provided; (v) contact information for building personnel in the event of an emergency, including email addresses, phone numbers and other methods of communication; (vi) instructions on removing furniture from rooftops and balconies during high wind events and; (vii) for buildings that utilize pumps, instructions on reducing water consumption during the utility outage. Such signs shall be updated by the owner of the residential building as needed and must be removed after the passage of the weather emergency, the natural disaster event or the restoration of utility services. The department shall determine the form of such signs including publishing a template that may be used by residential buildings for the purposes of this section.