Naturcycle works on many green roof projects of various sizes. Cities like Washington DC have used an aggressive tax credit to expand the number and type of green roofs installed. Can New York City do the same by simply expanding its existing programs?

A group of New York City lawmakers is urging Mayor Bill de Blasio (D) to expand a tax abatement for special sustainable roofing.

The Green Roof Tax Abatement offers $4.50 in property tax savings for each square foot of roof with vegetation and insulation to combat pollution from runoff and avert sewer flooding.

Comptroller Scott Stringer—who this week announced a mayoral bid—along with State Senator John Liu, and State Assembly Member Nily Rozic, asked de Blasio in a letter Friday to sign an executive order that would raise the cap on the program to $1 million a year from…