Local Law 88 of 2009 — Lighting & Submetering

What Local Law 88 actually requires

Local Law 88 of 2009 sits inside the Greener Greater Buildings Plan — the same 2009 package that produced LL84, LL85, and LL87. Where LL84 measures energy use and LL87 audits how systems are running, LL88 mandates two specific physical upgrades and a filing that proves they happened.

Lighting upgrades

Every covered building had to bring its lighting systems into compliance with the New York City Energy Conservation Code (NYCECC) at the time of installation. In practice, this means light power density limits per area, automatic shutoff controls, daylight harvesting where applicable, occupancy sensors in eligible spaces, and tandem wiring requirements — the full set of NYCECC provisions that govern new lighting installations.

The standard applies to all areas in non-residential buildings and to common areas in residential buildings. Lighting installed on or after July 1, 2010 is exempt if it was code-compliant at installation. R-2 and R-3 occupancy spaces — apartments and dwelling units within them — are exempt from the lighting requirement, but the building-wide filing is still required.

Tenant submetering

Non-residential buildings over 25,000 sqft must install electrical submeters for every covered tenant space. A “covered tenant space” means either:

• A single tenant occupying more than 5,000 sqft on one or more floors, or
• A floor over 5,000 sqft shared by two or more tenants

Each covered space needs a dedicated submeter. Where a floor is shared, a single floor-level submeter can serve multiple tenants if monthly statements break down each tenant's allocated share by area.

Tenants of submetered spaces must receive monthly electrical statements showing measured consumption and the amount charged. Owners are not required to pass through actual electricity costs — they can keep flat-rate billing if leases allow — but the statement showing real usage is mandatory either way.

Who's covered

Three coverage rules trigger LL88, and only one needs to apply:

1. A single building larger than 25,000 gross square feet
2. Two or more buildings on the same tax lot whose combined area exceeds 100,000 gross square feet
3. Two or more buildings held in condominium ownership and governed by the same board, where the combined area exceeds 100,000 gross square feet

Coverage is determined by Department of Finance records, not by the owner's own measurement. The DOB Sustainability Law Covered Buildings List (CBL), republished every March, is authoritative — buildings either appear on it or they don't.

Exemptions:

• One-, two-, and three-family homes (Tax Class 1)
• Garden-style apartments (with certification from a registered design professional)
• Lighting in R-2 or R-3 occupancy spaces — though the building-wide submission is still required if the building meets the threshold otherwise

If a building was substantially renovated and brought up to NYCECC during the renovation, the work itself may already satisfy the lighting requirement. The filing is still required to document that compliance.

Local Law 132 of 2016 — the threshold expansion

The original Local Law 88 of 2009 covered buildings over 50,000 square feet. Local Law 132 of 2016 lowered that threshold to 25,000 square feet, roughly tripling the number of NYC buildings subject to the law.

LL132 didn't change what compliance looks like — the lighting and submetering requirements are the same. It changed whohas to comply. A 30,000-square-foot mixed-use building in the Bronx that wasn't covered under the original 2009 statute became covered when LL132 took effect.

The DOB and NYC Accelerator both refer to the composite law as “Local Law 88 as amended” or “LL88/132/134.” When you hear someone say their building has an “LL132 obligation,” they mean an LL88 obligation that applies because of the LL132 threshold expansion.

Local Law 134 of 2016 — the residential and submetering expansion

Local Law 134 of 2016 extended LL88's reach into residential common areas and refined how submetering applies to mixed-use buildings.

Before LL134, the lighting upgrade requirement was easy to read as commercial-only. After LL134, common areas in residential buildings — lobbies, hallways, laundry rooms, mechanical spaces, parking garages — fell squarely under the same NYCECC compliance requirement as commercial spaces.

LL134 also tightened the definition of a “covered tenant space” for submetering purposes, making clear that floors with multiple non-residential tenants needed proportional billing visibility regardless of whether each tenant exceeded 5,000 square feet individually.

Together, LL132 and LL134 are why a residential co-op or condo with retail on the ground floor — a building that might have looked exempt under the 2009 original — almost certainly has an LL88 obligation today.

Deadlines and the 2025 cliff

The lighting upgrades and submeter installations were both due by January 1, 2025. The filing — an attestation by a registered design professional, licensed master electrician, or licensed special electrician — was due in BEAM by May 1, 2025. The filing fee is $115 and is waived for buildings that filed LL97 in the same calendar year.

Buildings that received DOB-granted extensions in 2025 had until May 1, 2026to complete the work. Outside of that extension, every covered building that hasn't filed is now non-compliant and accruing penalties.

There is no annual re-filing under LL88. Once an attestation is on record, the building is done — unless lighting or submetering changes materially, which can require an updated filing.

Penalties

Three separate fines accrue for non-compliance, and they stack:

A 100,000-square-foot mixed-use building with retail tenants and no LL88 filings could be looking at:

• $1,500 for the missing lighting report
• $1,500 for the missing submeter report
• $500 × number of qualifying tenant spaces without submeters

For a building with five covered tenant spaces, that's $5,500 in year one, recurring annually until both reports are filed and submeters installed. That figure compounds: a building three years out of compliance is sitting on $16,500 in fines plus the underlying upgrade cost.

For many covered buildings, recurring penalties quickly make delay more expensive than starting the cure process — especially because the underlying filing remains unresolved while penalties accumulate. The math is rarely “wait it out and see”; it's almost always “scope the survey, complete the field documentation, and close the filing.”

Common pitfalls

The work is done. The filing was never closed.

The single most common LL88 situation in NYC right now: a building that completed LED upgrades during a retrofit, ConEd rebate cycle, or capital project — sometimes years ago — but never filed the BEAM attestation. The lighting work is compliant. The submeters may be installed. But until a registered design professional, licensed master electrician, or licensed special electrician attests to it through BEAM, the building is accruing the $1,500/year reporting penalty as if no work had happened.

The cure is documentation, not another retrofit: a field survey to verify and document the existing condition, a qualified professional's attestation, and the BEAM filing itself. Most buildings in this position can close the obligation in weeks, not months.

Assuming residential buildings are exempt.

The R-2/R-3 exemption only covers the dwelling units themselves. Common areas — and the building-wide filing — still apply. A 200-unit residential building with an exempt apartment lighting load can still owe the lighting attestation for its lobbies, hallways, mechanical rooms, and any commercial ground-floor space.

Provisioning submeters but not delivering tenant statements.

Installing a submeter satisfies the hardware side. The monthly statement requirement is separate — and tenants in covered spaces must receive a written or electronic statement every billing period showing measured consumption. Property managers who installed meters but never set up the billing-side reporting are technically non-compliant.

Patched lighting that isn't actually NYCECC.

Re-lamping fluorescent fixtures with LED tubes does not automatically meet NYCECC. The standard governs power density per square foot, controls, and system-level requirements — not the bulb. A “we already did LED” building may still need controls upgrades to attest compliance.

How LuxNet helps with LL88

LuxNet's field surveys are built around what LL88 actually requires. We capture every fixture in every area, photograph each one, measure controls and shutoff configurations, and calculate light power density at the area level using the NYCECC method. Where the building falls short, our report identifies the specific deficiencies and what it takes to close them.

For submetering, we walk every floor, identify every covered tenant space against the 5,000-square-foot rule, document existing meter inventory, and flag where new meters are needed. The deliverable is a fixture-and-meter inventory your registered design professional or licensed electrician can certify against — not a desktop estimate that needs to be redone in the field.

If your building hasn't filed yet, the path is straightforward: a Compliance-tier survey produces the data, a qualified professional attests, and the BEAM filing closes out the obligation. If you're planning a retrofit on top of the compliance work, our Project+ tier extends the survey into specifications and a bill of materials your contractor can bid against.