What do the new energy efficiency building grades mean to NYC apartment buyers?By: Alanna SchubachVIEWED 13 TIMESPublished: 11/2/2020Source: BrickUnderground.com Featuring Deanna Kory: https://www.brickunderground.com/buy/what-do-new-energy-efficiency-grades-for-buildings-mean-for-buyers-co-ops-condos-nyc