There is no single mandatory universal minimum pitch, but practical thresholds exist. For existing buildings, solar installation work should comply with NYC Construction Codes, NYC Electrical Code, NYC Energy Conservation Code and applicable zoning regulations. Per the 2014 Administrative Code, section 28-101. 3 and 2016 ECC 101, additions, alterations, renovations or repairs to. NYC has some of the most detailed solar installation regulations in the country—covering everything from rooftop access for firefighters to architectural requirements in zoning districts. Understanding these rules up front will help ensure a smooth, compliant, and safe solar installation. Here's. Solar, or photovoltaic (PV) panels as they're referred to in NFPA 1, Fire Code, are becoming more and more common on one- and two-family dwelling and townhouse roofs. Since the 2016 edition of NFPA 1, access pathways have been required on roofs to facilitate fire service access as well as egress. Local Law 92 and Local Law 94 require that the roofs of certain buildings be partially covered with green roof or solar photovoltaic electricity generating systems in accordance with the New York City Building Code. Roofs below 2:12 are treated as low-slope or flat and require special mounting.