N.Y. Comp. Codes R. & Regs. Tit. 9 §§ 300-2.11
Lighted seasonal decorations are permitted on State property provided the lights contain an Underwriters Laboratory or Fire Underwriters label and are thoroughly inspected by the users for frayed or broken wires or other defects before use. All trees must be made of fire retardant materials and bear the Underwriters Laboratory label. Natural trees that are approved by the commissioner may only be permitted inside a building in accordance with the provisions of section 804 of the Fire Code of New York State, as codified by section 1225.1 of Title 19 NYCRR. All decorations must be non-combustible. No trees shall obstruct corridors, exit ways, or other means of egress. The commissioner may remove any decorations or trees found on State property in violation of this section. Upon 30 days' written notification to the responsible tenant agency, firm or person, such property will be disposed of as State surplus property in accordance with applicable statutes. Notwithstanding the provisions herein, a facility manager may impose more stringent restrictions on the use and permitted location of seasonal decorations as deemed necessary.
N.Y. Comp. Codes R. & Regs. Tit. 9 §§ 300-2.11