LL84

Local Law 84 requires owners of buildings above the law's size threshold to measure and report their buildings' annual energy and water consumption through the federal benchmarking framework, producing a public, building-by-building record of energy performance. Reported metrics include energy-use intensity and, where computable, an efficiency score and reported greenhouse-gas emissions.

Benchmarking data is the empirical backbone of New York's building-decarbonization regime: Local Law 97's emissions caps are assessed against the consumption reality that benchmarking documents, and energy-grade disclosure requirements draw on the same filings. For analysis, a building's benchmarking trail reveals operating efficiency, supports LL97 exposure estimates, and — by its absence — flags non-compliance with the reporting requirement itself.