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LL84: Benchmarking
Photo Credit: DCAS
LL84: Benchmarking

Local Law 84 (LL84) requires owners of large buildings to annually measure their energy and water consumption in a process called benchmarking. LL84 standardizes this process by requiring building owners to enter their annual energy and water use in the U.S. Environmental Protection Agency's (EPA) online tool, ENERGY STAR Portfolio Manager® and use the tool to submit data to the City. LL84 gives building owners information about a building's energy and water consumption compared to similar buildings, and tracks progress year over year to help in energy efficiency planning.

LL84's annual benchmarking process consists of four steps:

  1. Check the Covered Building List for your property(ies) every year.
  2. Collect whole building energy data (and water data, if eligible) from utilities.
  3. Measure and record your energy and water usage in Portfolio Manager®.
  4. Submit usage data to the City by May 1 through Portfolio Manager®.

Building owners are subject to a penalty if usage data is not submitted by May 1 every year.

For more information, please visit the links below:

Compliance Instructions
Energy and Water Data
Deadlines and Violations
Data Disclosure and Reports
NYC Benchmarking Help Center

Quick Links