Below is a brief explanation of the new legislation that was passed by NYS regarding the installation of new natural gas and propane equipment in residential and commercial buildings. (a) the code shall prohibit the installation of fossil-fuel equipment and building systems, in any new one-family residential building of any height or new multi-family residential building not more than three stories in height on or after December 31, 2025 and..... the code shall prohibit the installation of...