What is Local Law 88 in NYC?
Local Law 88 is part of the Greener, Greater Buildings Plan — the same package that brought NYC Local Law 84 (benchmarking), Local Law 87 (energy audits and retro-commissioning), and Local Law 97 (carbon emissions caps). Where the other three laws focus on tracking or limiting how a building uses energy, LL88 focuses on the physical equipment inside the building: the lighting and the metering.
The core idea is straightforward. Modern lighting uses far less electricity than the fluorescent and incandescent systems most pre-2010 buildings were built around. And tenants who can see their own electricity use tend to use less of it. LL88 was written to push covered NYC buildings to make both changes — lighting upgrades and tenant submetering — and to file a certification report with DOB once the work is finished.
Which NYC buildings have to comply with LL88?
LL88 applies to NYC buildings that exceed the city’s covered building threshold — generally any building over 25,000 gross square feet, plus certain combinations of smaller buildings on the same tax lot under common ownership. If your building is already required to file LL84 benchmarking, it’s likely covered by LL88 as well.
Mixed-use buildings are where most reader confusion lives. A residential apartment building over the threshold still has to comply with LL88 lighting requirements in non-residential common areas (lobbies, hallways, basements, parking, mechanical rooms) and with submetering rules for any commercial tenant spaces inside the building above the 5,000 square foot tenant threshold. Tenant apartments themselves are not in scope for the submetering rule.
If you’re unsure whether your building is covered, the DOB’s covered buildings list is the authoritative source. Energo’s guide to which NYC building energy laws apply to your building breaks down how to read it.
What does LL88 require for lighting?
LL88 requires non-residential lighting systems in covered buildings to be brought up to the current NYC Energy Conservation Code. In practice, that means most buildings are replacing older fluorescent fixtures and ballasts with current code-compliant lighting — usually LED — and updating controls (occupancy sensors, daylight sensors, automatic shutoff) to match the controls requirements in the code.
The rule covers non-residential spaces inside the building. That includes lobbies, hallways, stairwells, basements, parking garages, mechanical rooms, retail spaces, office spaces, and amenity areas. Residential dwelling units inside a mixed-use building are not in scope.
Spaces that already meet the current code don’t have to be redone. If a section of the building was recently renovated with code-compliant lighting and controls, the work performed for that section can usually count toward LL88 compliance, provided documentation exists.
The work has to be designed and certified by a registered design professional — a Professional Engineer or Registered Architect — who confirms the upgraded lighting meets the energy code. This is the same kind of professional who certifies LL87 retro-commissioning work, which is why many owners coordinate LL88 and LL87 scopes together.
What does LL88 require for tenant submetering?
LL88 requires submeters to be installed for any non-residential tenant space larger than 5,000 square feet, so the tenant can see the electricity they’re actually using. Each tenant has to receive a monthly statement showing their consumption.
Three details matter for property managers. First, the threshold is per tenant — not per building. A 30,000 square foot office floor leased to a single tenant requires a submeter. The same floor split among five 6,000-square-foot tenants requires five submeters. Second, the meter has to measure electricity used by the tenant specifically, which can require electrical work to separate tenant loads from common-area loads if the building wasn’t originally wired that way. Third, the tenant statement requirement is ongoing. Once the meters are installed, the building has to deliver monthly usage information to each submetered tenant — it isn’t a one-time install.
The practical implication is that submetering work often takes longer than the lighting upgrades and needs to be planned around tenant operations. A retail tenant may not allow electrical work during business hours, and existing tenant leases may need to be reviewed before the work begins.
What is the LL88 report and who files it?
The LL88 report is the document filed with the NYC Department of Buildings confirming that a covered building’s lighting upgrades and submetering work have been completed in accordance with the law. It is the deliverable that closes out a building’s LL88 obligations.
The report is prepared by the registered design professional — a Professional Engineer or Registered Architect — who oversaw or certified the work. It documents the spaces affected, the upgrades performed, how the lighting meets current code, and how the submetering system meets the LL88 requirements. The building’s owner or authorized agent files it through DOB’s electronic filing system, but the technical certification comes from the design professional.
This is the question most people are searching when they type “LL88 report” into Google. The short answer: the LL88 report is the certification of LL88 compliance, prepared by a design professional, filed by the building owner with DOB.
When is the LL88 deadline and what are the penalties?
The most recent LL88 compliance report deadline was May 1, 2026. Covered NYC buildings that have not yet filed an LL88 report are now out of compliance and may face annual DOB penalties until the certification is submitted through DOB NOW: Safety. A filing fee payment is required with each LL88 submission.
LL88’s underlying requirements cover lighting upgrades to the current NYC Energy Conservation Code and submeter installation for non-residential tenant spaces over 5,000 square feet. If your building has not completed the required work, the path forward is to finish the lighting and submetering scope, have a registered design professional (PE or RA) certify the work, then file the LL88 report with the required fee.
How is LL88 different from LL84, LL87, and LL97?
LL88 is the only one of NYC’s four major building energy laws that mandates specific physical upgrades to the building itself — lighting and submetering. The other three laws focus on data, assessment, or limits.
LL84 is the benchmarking law. It requires covered buildings to report their annual energy and water use to the city. LL84 doesn’t require any improvements. It just creates the data.
LL87 requires a deeper look every ten years. Covered buildings have to conduct an energy audit and a retro-commissioning report, both prepared by qualified professionals.
LL97 sets carbon emissions limits on covered buildings, with caps that tighten in 2024 and again in 2030. LL97 penalties are based on how much a building exceeds its annual cap.
In practice, LL88 work — lighting upgrades especially — often shows up later as an LL97 emissions reduction, because lower electricity use means lower emissions. Many property managers coordinate LL87 audit findings with LL88 lighting scopes and LL97 reduction strategies so the same engineering work serves multiple compliance needs.
How to start preparing for LL88 compliance
If your building is covered and you haven’t started, the first step is a current-state review: what lighting is installed in non-residential spaces, what controls exist, which tenant spaces are over the submetering threshold, and what (if any) submetering hardware is already in place. A walk-through by a qualified electrical contractor or design professional is usually the fastest way to scope the work.
From there, the work is usually phased. Lighting upgrades are typically less disruptive and can be scheduled around building operations. Submetering takes more planning, especially in older buildings where tenant loads were not originally separated. The LL88 report comes at the end, once the design professional can certify the completed work.
Energo’s Local Law 88 compliance page outlines what a typical LL88 scope looks like and where Energo’s licensed electricians and energy team fit. If you’re not sure whether your building is on the covered list or where you stand on compliance, that’s the place to start.
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