Property owners or managers can get assistance with questions or violations related to the Local Law 84 (LL 84) Benchmark requirement to report their buildings' annual energy and water consumption.

The Benchmark requirement requires owners of large buildings to annually measure and report their energy consumption through a process called benchmarking. These building owners must use the Environmental Protection Agency's online Portfolio Manager to create the report.

The report deadline is May 1 each year. Failure to benchmark by May 1 will result in a violation and financial penalty.

To report a building not posting its energy efficiency rating, send an email to:

The Benchmark Local Law 84 (LL 84) requires that all City and private buildings greater than 50,000 gross square feet, or buildings on one tax lot that together exceed 100,000 gross square feet, provide energy data use for the building for the prior 12-month calendar year.

Buildings which must comply with this requirement are determined based on Department of Finance records. To comply with the Benchmark requirement, building owners must complete an online "NYC LL84 Benchmarking [Year] Compliance Report" each year by using a free online tool called Portfolio Manager

The deadline each year for completing the Benchmarking requirement is May 1.

You can get more information about LL 84, including:

  • Proposed Rule
  • Summary of the Law
  • Information on using Portfolio Manager, the online reporting tool
  • Guidelines on the energy use data that building owners will need to gather and how to enter this energy use data
  • Template to enter energy use data for NYC buildings
  • Web-link to release the energy use data to the City
  • List of buildings required to benchmark

Learn more about LL 84 Benchmarking.

You can contact the Department of Buildings if you have additional questions about the benchmark requirement. Email your questions to

Property owners or managers can get information or request assistance with LL 84 building energy usage reporting requirements or violations.

To request assistance, email the Department of Buildings (DOB) at

Get assistance with complying with Benchmarking requirements.

Learn about Benchmarking deadlines and violations.

Challenge a Benchmarking Violation

DOB accepts challenges to violations issued for failure to comply with the Benchmarking requirement. Building owners can challenge the violation within 30 days from the violation date.

Submit a challenge to a Benchmarking violation.

Benchmarking Help Center

You can get information, assistance, and answers to questions about NYC Local Law 84 (LL84) of 2009 through the New York City Benchmarking Help Center. The Center's goal is to help New York City increase compliance, improve data accuracy, and assist new building owners to benchmark, enabling New Yorkers to use energy and water responsibly and prepare for a more sustainable future.

Benchmarking energy and water usage plays an important role in the Greener, Greater Buildings Program, by helping building owners to see how their building’s energy and water performance compares to usage in other buildings, and providing year over year comparisons that can show the benefits of energy-saving changes made.

You can contact the Benchmarking Help Center for more information and assistance.


Visit the Benchmarking Help Center website.

Get assistance with complying with Benchmarking requirements.

You can also send an email to

By Phone

  • Agency: Department of Buildings
  • Division: Benchmarking Help Center
  • Phone Number: (212) 566-5584
  • Business Hours: Monday - Friday: 9 AM - 5 PM

Greener, Greater Buildings Program Digest

For updates on Benchmarking (LL 84), subscribe to the Greener, Greater Buildings Program (GGBP) Digest by sending an email to Put "subscribe" in the subject line.

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