N.Y.C. Admin. Code § BC H103: Section BC H103: Location

H103.1 Location restrictions.

Signs shall not be erected, constructed or maintained so as to obstruct any fire escape or any window or door or opening used as a means of egress or so as to prevent free passage from one part of a roof to any other part thereof. A sign shall not be attached in any form, shape or manner to a fire escape or exterior stair, nor be placed in such manner as to interfere with any opening required for natural light or natural ventilation.

H103.2 Fire Department access.

Signs erected to cover doors or windows required by Section 501.3.2 for Fire Department access to existing buildings shall be provided with access panels to such openings.