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This local law requires buildings to meet the most current energy code for any renovation or alteration project. LL 85 filled a loop hole found in previous regulations by no longer exempting projects affecting less than 50% of the building from following the most current code standards. Through this law, the New York City Energy Conservation Code (NYCECC) was established in 2009. Since its enactment, additional amendments have been added to NYCECC to increase its strength and scope. These amendments include LL 48, mandating occupancy sensors in small, infrequently used commercial spaces (2010), the 2010 Energy Conservation Construction Code of New York State (ECCCNYS), and Local Law 1 (2011).

For more information, please look at "Related Resources" in the right-hand sidebar or visit the PlaNYC website here.


Welcome to the Building Energy Exchange! Located in downtown Manhattan, we’re a resource center dedicated to advancing efficient energy and lighting design in buildings. Explore this site for helpful case studies and reports, check out our calendar for a wide range of activities and events, and follow our lively blog, Insight. Our site is growing all the time—drop us an email to contribute or comment!