The following must report hazardous defects on a building's exterior walls:
- Licensed architects
 - Engineers
 
These must be reported right away. They can do so by submitting a Notification of UNSAFE Facade, FISP-3, in DOB NOW: Safety.
The building owner should begin to repair or stabilize the exterior walls right away.
The notice is not a violation or a ticket.
An inspector will:
- Verify the hazardous conditions
 - Determine if enough safeguards have been provided
 - Determine if repairs are in progress
 
If no safeguards are in place, the inspector can issue a DOB violation.