After speaking with the Landmark Preservation Commission, I was informed on 30-March that:
The Department of Buildings issued nine violations for the illegal advertising banner recently placed on the apex of the historic Flatiron Building at Madison Square today.
The violations were:
1. Failure to comply with filed plans. Plans called for a 4-foot high shed and they built it to 8 feet in order to accommodate the Citigroup ad.
2. Sign on surface area is too large.
3. Prohibited advertising sign.
4. Installing advertising sign without a permit.
For the immense sign on the scaffolding:
5. Sign creates hazardous wind load.
6. Prohibited advertising sign on scaffold.
7. Sign exceeds the 40-foot height limit.
8. Surface area for the sign is too large.
9. Failure to get permit from Buildings Department.
In the photo we posted, one can’t see the Citigroup violations, obscured as they are by a bus. Coonrod has a much bigger, more revealing image on his page.