NYC Local Law 87, energy audits and retro-commissioning
Covered buildings file every 10 years, in the year that ends with the last digit of their block. Blocks ending in 7 file by December 31, 2027. We retro-commission your base building systems, fix what we find with your team and get the report filed on time.
LL87 applies if your property meets any one of these, based on gross floor area in NYC Department of Finance records.
The penalty does not replace the filing. A late report is accepted only after the penalties are paid.
Led by MAS Dynamics
We test how your base building systems actually run against how they should: HVAC, controls, domestic hot water and lighting controls. Every deficiency is logged, assigned and corrected or documented before filing. Performed by an ASHRAE BCxP, a certification NYC accepts for retro-commissioning agents.
With our partner PE
The ASHRAE Level 2 energy audit identifies savings measures. The Energy Efficiency Report is signed and filed by a licensed Professional Engineer, as the law requires. You deal with one team and one schedule.
Utility data, BMS trends, equipment lists and a full walk of the mechanical spaces.
Schedules, setpoints, sensors, economizers, VFDs and hot water temperatures, tested and recorded per device.
Your engineers and contractors see their own items, fix them and report back with a photo.
The Energy Efficiency Report goes in before your deadline, with the full test record behind it.
The deficiencies retro-commissioning finds are usually the cheapest emissions you can cut before the 2030 limits. Because every test sits on one record, the same data becomes your LL97 plan instead of a report in a drawer.
Plan LL87 and LL97 togetherThe Energy Efficiency Report must be filed by a registered design professional. We lead the retro-commissioning and work with our partner Professional Engineer, who performs the energy audit and files the report. You get one proposal and one schedule.
Base building systems: HVAC, building controls, domestic hot water and lighting controls. We check operating schedules, setpoints, sensor calibration, economizers, variable speed drives and temperatures, then correct or document each deficiency.
Retro-commissioning deficiencies are corrected as part of the work, which is why we track each one to closure with your team. Energy audit measures are recommendations you can plan into capital budgets or your LL97 strategy.
Plan on several months from start to filing, depending on building size and how quickly corrections are made. Starting a year ahead of your deadline is comfortable.
It can. Send us the details and we will check your obligations and timing before quoting.
Send the building and we come back within two business days with scope, schedule and a fixed price.
This page is guidance, not legal advice; confirm requirements with NYC DOB.
