Black Building Advisory: Local Law 11 Façade drilling, September 19-23, 2022

From Monday, September 19, to Friday, September 23, 2022, we will be conducting façade repairs at the William Black building. These repairs are being completed in accordance with Local Law 11, a New York City law that requires property owners to inspect all exterior walls of commercial and residential buildings higher than six stories every five years.

Highlights of what to expect:

  • There will be personnel working in suspended scaffolds along the exterior walls performing the required inspections and maintenance.
  • There will be minor drilling in some areas of the building façade to remove any damaged brick, stone, or mortar.
    • 3rd floor, 7th floor, 13th floor, 16th floor, 18th floor, Roof parapet


During this time, please keep windows in these areas closed to minimize noise and dust.

For any questions or concerns, please contact Gabriel Villegas, project manager, at gv2328@cumc.columbia.edu.