If your building tops 25,000 gross square feet, Local Law 88 requires you to upgrade lighting to meet the NYCECC and installation of sub-meters in covered tenant spaces over 5,000 gross square feet. Confirm coverage first, then pull together documentation, line up a Registered Design Professional or licensed electrician, and file through BEAM. Owners who skip the verification step often pay for retrofits they never needed.
TL;DR:
- Buildings over 25,000 gross square feet, aggregating multiple tax lots, must verify coverage and document existing lighting upgrades before retrofitting.
- Upgrades done after July 1, 2010, may be considered compliant if properly documented, potentially avoiding unnecessary retrofit costs.
- Sub-metering is required for tenant spaces over 5,000 square feet unless they already have dedicated meters, with sample monthly statements necessary for filing.
- Only licensed professionals such as registered design engineers or licensed electricians can sign the attestation, which must be accurately filed via the BEAM portal before deadlines.
- Fines of up to $1,500 per year apply for non-compliance or missing filings, with penalties stacking if multiple violations or missing meters occur.
Table of Contents
- What Counts as a Covered Building Under LL88 Lighting Upgrades?
- What Does the NYCECC Require for Article 310 Lighting Upgrades?
- How Does Sub-Metering Work Under Article 311?
- Who Can Sign Off and How Does BEAM Filing Work?
- What Are the LL88 Deadlines, Fees, and Penalties?
- How Do You Plan an LL88 Compliance Project Start to Finish?
- When Should You Bring in a Full-Service Engineer for LL88?
- How Bazini Engineering Supports Your LL88 Compliance Project
- Where to Verify Official LL88 Requirements
- Sources
- FAQ
What Counts as a Covered Building Under LL88 Lighting Upgrades?
A covered building is any structure exceeding 25,000 gross square feet, measured across the whole tax lot rather than a single floor. That threshold catches far more properties than owners expect, especially where several smaller buildings share one Block and Lot number. If your tax lot combines multiple Building Identification Numbers, the gross square footage gets aggregated across all of them, which can push a property over the line even when no single structure looks large enough on its own.
Inside a covered building, a covered tenant space is any non-residential unit exceeding 5,000 gross square feet on a given floor. Article 311 sub-metering applies specifically to those spaces.
A few coverage rules trip people up regularly:
- Residential common areas (lobbies, hallways, parking garages, laundry rooms) fall under LL88 even in buildings classified R-2 or R-3.
- Individual dwelling units are exempt from the lighting and sub-metering requirements, according to the LL88 FAQs.
- Floor divisions matter: if one floor is split among several tenants, each tenant space is evaluated on its own square footage, not the floor total.
- Buildings with no qualifying tenant spaces still have to file, attesting that none exist. Skipping that filing draws the same fine as an actual violation, per the DOB FAQs.
If you manage a campus with multiple BINs on one BBL, get the aggregate square footage confirmed in writing before you assume you're exempt.
What Does the NYCECC Require for Article 310 Lighting Upgrades?
Article 310 requires lighting systems in covered buildings to meet the lighting power density limits and control requirements in the NYC Energy Conservation Code. In practice, that means swapping outdated fixtures for code-compliant ones and adding automatic controls where the code calls for them, not just changing bulbs.
The controls piece catches a lot of owners off guard. NYCECC generally expects:
- Occupancy sensors in spaces like storage rooms, restrooms, and conference rooms that aren't in constant use.
- Daylighting controls in areas with substantial exterior glazing.
- Bi-level switching so lighting can step down rather than only switching fully on or off.
- Time-switch controls for spaces on predictable schedules, like office floors or retail areas.
Here's where owners can save real money: if your building upgraded lighting after July 1, 2010 to the NYCECC standards in effect at that time, that work generally counts as compliant. You don't necessarily need to redo it. The catch is proving it. Locate the original permits, lighting schedules, and any manufacturer cut sheets from that job before assuming you need a new retrofit.
Pro Tip: Before calling an electrician to bid a new lighting job, ask your building's engineer or property manager to search old capital project files for any lighting work done since 2010. A five-minute records search can save tens of thousands of dollars in unnecessary fixture replacement.
Whatever you decide, the Article 310 attestation package needs to include current lighting schedules, control specifications, and a signed attestation form from both the owner and the certifying professional. The BEAM Article 310 user guide lays out the exact form and required fields.
How Does Sub-Metering Work Under Article 311?
Article 311 requires sub-meters in every covered tenant space over 5,000 gross square feet, unless that space already has its own dedicated utility meter serving it directly. The point isn't just measurement. It's giving tenants a monthly statement that shows their own consumption, which tends to change how much energy they use once they can actually see it, according to GBEE's overview of the policy's intent.
A few things determine what qualifies and what the filing needs to show:
- Existing dedicated meters covering a tenant space independently can satisfy the requirement without new hardware, as long as the meter genuinely serves only that space.
- Sub-meter configuration can use current-transformer type meters or revenue-grade meters, depending on the tenant billing setup and whether the space feeds into a building energy management system.
- Sample monthly statements must be included in the filing, showing exactly what tenants will see, including usage and billing period.
- A list of covered tenant spaces identifying each qualifying unit by floor and square footage has to accompany the submission.
Getting the monthly statement format right before you file matters more than owners expect. DOB wants to see a real sample statement, not a placeholder, and building materials referenced in LL88 guidance documents confirm this is a standard upload requirement, not an optional attachment.
Who Can Sign Off and How Does BEAM Filing Work?
Only three types of professionals can sign the Article 310/311 attestation: a Registered Design Professional (a licensed engineer or architect), a Licensed Master Electrician, or a Licensed Special Electrician. Whoever signs takes on legal responsibility for the accuracy of what's attested, so this isn't a signature to collect casually.
The filing itself runs through BEAM, DOB's online filing portal. Here's the sequence that keeps a filing moving instead of stalling:
- Confirm your BIN and BBL formatting matches DOB's exact records before opening a ticket. Small formatting mismatches are one of the most common causes of rejected submissions.
- Select ticket type "11. LL88 Lighting Article 310" in BEAM, then complete the required fields, including the submitter's email address.
- Verify the submitter email is already linked to a DOB NOW account tied to the owner, the owner's representative, or the service provider before you start the ticket. Mismatched emails cause delays that catch owners off guard, according to the BEAM user guide.
- Upload the signed Professional Attestation Form, the list of covered tenant spaces, and the sample monthly statement together in one submission.
- Pay the filing fee and retain the DOB payment confirmation number as proof of a completed filing.
Pro Tip: Set up all required DOB NOW email accounts (owner, representative, service provider) at least a week before you plan to submit. BEAM tickets get rejected far more often over email mismatches than over any technical detail in the attestation itself.
What Are the LL88 Deadlines, Fees, and Penalties?
Lighting compliance under LL88 became effective January 1, 2025, with reports due by May 1, 2025, according to the NYC DOB. Owners who missed that window should assume they're already accruing exposure and should file as soon as documentation is ready. DOB has tied some LL88 procedural steps to Local Law 97 compliance activity, so if you're already working on an LL97 audit, coordinate the two filings rather than treating them as separate projects.
The filing fee is $115. If you're also filing an LL97 report in the same year, LL88's filing fee is waived under the combined-fee rule; fee-exempt owners should request written confirmation from DOB rather than assume the exemption applies automatically.
Penalties accumulate fast:
- $1,500 per year for failing to comply with or file the lighting upgrade requirement.
- $1,500 per year for failing to file the sub-metering report.
- $500 per missing sub-meter, stacked on top of the $1,500 sub-metering fine.
A building with multiple unmetered covered tenant spaces that hasn't filed either report could face combined annual fines before counting the per-meter penalties, based on the fine structure in the DOB FAQs. These fines recur annually until the filing is corrected.
How Do You Plan an LL88 Compliance Project Start to Finish?
Most owners underestimate how much of the LL88 timeline is documentation work, not construction. Here's the sequence that keeps a project on schedule:
- Verify coverage. Pull tax lot records and confirm gross square footage across all BINs on the BBL.
- Audit existing lighting and metering. Document what's installed now, including any post-2010 upgrade records that might already satisfy Article 310.
- Identify covered tenant spaces. List every non-residential unit over 5,000 gross square feet and check for existing dedicated meters.
- Engage an RDP or licensed electrician. Decide who will attest, and confirm their license status matches what BEAM requires.
- Design and procure. Specify fixtures, controls, and metering hardware based on the audit findings, not assumptions.
- Coordinate installation access. Tenant spaces, display lighting in retail or museum-type occupancies, and after-hours work all affect scheduling.
- Commission and document. Verify controls function as specified and photograph or log the completed install.
- File in BEAM. Upload the attestation form, tenant space list, and sample statement, and retain the payment confirmation number.
Timeline ranges vary by building complexity, but survey and design work typically runs several weeks, procurement and electrician scheduling can add more depending on fixture lead times, and commissioning usually needs its own dedicated week once installation wraps.
Budget drivers split into a few categories: full fixture replacement costs more than a controls-only retrofit where existing fixtures are already efficient; sub-meter hardware and communications wiring add cost in multi-tenant floors with complex billing splits; and labor costs climb fast in occupied buildings where electricians need scheduled after-hours access.
Pro Tip: If your building has display lighting in retail bays, galleries, or lobby art installations, flag those areas early. NYCECC control requirements sometimes conflict with how display lighting needs to function, and resolving that during design is far cheaper than during a failed inspection.
When Should You Bring in a Full-Service Engineer for LL88?
Most BEAM filing delays we see trace back to the same handful of problems: mismatched submitter emails, BIN/BBL formatting errors, and attestation forms missing a signature from either the owner or the certifying professional. Coordinating those three parties before the ticket opens, rather than after DOB kicks it back, is the difference between a filing that clears in days and one that drags for months.
A licensed master electrician can generally handle straightforward, single-tenant buildings with simple lighting and metering needs. Once you're dealing with multiple tenants across several floors, historic or landmarked lighting fixtures, or a filing that needs to line up with a Local Law 97 compliance strategy, bringing in a full-service engineering firm to coordinate design, documentation, and filing tends to prevent the costly rework that comes from siloed decision-making.
— Joseph
How Bazini Engineering Supports Your LL88 Compliance Project
LL88 compliance projects benefit from in-house coordination and direct access to senior engineers rather than account managers passing your file around. That matters here because LL88 compliance touches lighting design, electrical coordination, and permit filing all at once, and having one firm own all three cuts the handoff errors that cause BEAM rejections in the first place.
The scope of work typically includes:
- Lighting audits to determine whether existing fixtures already satisfy NYCECC, so you're not paying for a retrofit you don't need.
- NYCECC-compliant lighting design, including controls specification for occupancy, daylighting, and bi-level switching.
- Sub-meter specification and procurement guidance for covered tenant spaces under Article 311.
- Attestation and BEAM filing support, including document preparation and coordination with your licensed electrician.
- NYC permit filing and agency coordination for the broader construction work LL88 upgrades often trigger.
The result owners care about most is a complete, defensible attestation package filed correctly the first time, with the documentation to back it up if DOB has questions later. If your building needs a lighting audit or a full Article 310/311 filing plan, start with Bazini Engineering's building owner services or review the full service offerings to get a project scoped.
Where to Verify Official LL88 Requirements
Before filing, confirm every technical requirement against DOB's own materials rather than a third-party summary. The LL88 landing page covers coverage rules and deadlines directly from DOB. The Article 310 user guide walks through the exact BEAM filing steps and attestation form. The LL88 FAQs answer edge-case exemption questions, and the GBEE overview explains the energy policy reasoning behind the law. These are the sources DOB itself points to for attestation, and they should settle any dispute over a technical detail.
Sources
FAQ
Does LL88 Apply to Residential Buildings?
Yes, if the building exceeds 25,000 gross square feet. Individual dwelling units are exempt, but common areas like lobbies and hallways still need compliant lighting, and any covered non-residential tenant space in the building still needs sub-metering under the LL88 FAQs.
What Happens if I Miss the LL88 Filing Deadline?
You'll accrue annual fines that recur until you file correctly. Lighting non-compliance carries a $1,500 annual fine, and sub-metering violations carry $1,500 plus $500 per missing meter, according to DOB's fine structure.
Can I Avoid Retrofit Costs if I Already Upgraded My Lighting?
Possibly. If your building upgraded lighting after July 1, 2010 to the NYCECC standards then in effect, that work generally counts as compliant, but you need documentation like permits and lighting schedules to prove it before you commission new work.
Who Is Allowed to Sign the LL88 Attestation Form?
Only a Registered Design Professional, a Licensed Master Electrician, or a Licensed Special Electrician can sign the Article 310/311 attestation. That professional takes on responsibility for the accuracy of the filing.
How Much Does LL88 Filing Cost?
The DOB filing fee is $115, waived if you're also filing a Local Law 97 report the same year. Costs for the actual lighting upgrade or sub-metering work vary by building, and firms like Bazini Engineering provide project-specific quotes through their services page.