LL87: Energy Audits & Retro-Commissioning

LL87: Energy Audits & Retro-Commissioning

What is LL87?

Local Law 87 (LL87) mandates that buildings over 50,000 sq. ft undergo periodic energy audit and retro-commissioning measures as part of the Greener, Greater Buildings Plan (GGBP). The intent of this law is to inform building owners of their energy consumption through energy audits, which are surveys and analyses of energy use, and retro-commissioning, the process of ensuring correct equipment installation and performance.Ref: LL87

In addition to benchmarking annual energy and water consumption (LL84), energy audits and retro-commissioning will give building owners a much more robust understanding of their buildings’ performance, eventually shifting the market towards increasingly efficient, high-performing buildings.
It is important to note that this law is completely different from upcoming LL97 – which focuses on greenhouse Gas Emissions – compliance dates start from 1/1/2023.Ref: LL97


In summary, LL87’s energy audit and retro-commissioning process requires the following:
1. Determine if a building needs to comply, and what year it is due.
2. Conduct an energy audit and retro-commissioning of base building systems and complete an Energy Efficiency Report (EER) electronically.
3. Submit the EER once every ten years to the City by December 31.

Is your Building Covered?

Below table shows the submittal dates based on the last digit of the tax block number of the building.

Year first EER is due2013201420152016201720182019202020212022
Last digit of tax block number3456789012

The year you must comply with LL87 and submit your EER to the City is determined by the last digit of your tax block number. For example, a property with the tax block number of “5” is due to file their EER by December 31, 2015.

For details, please refer to LL87 Covered Building

Compliance Assistance:

A property is listed only if a single building on a single lot is over 50,000 sq. ft, or multiple buildings on a single lot combined are over 100,000 sq. ft. Non-compliant facilities are subject to penalties. Please contact EES or (914) 788-4165 if you need assistance with the LL 87.