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NYC Local Law 88 Compliance: Tenant Submetering & Lighting Upgrades
If your building exceeds 25,000 square feet, Local Law 88 requires you to submeter qualifying tenant spaces and bring your lighting up to the NYC Energy Conservation Code. Com+ Mechanical helps building owners and property managers across the NYC metro assess their tenant loads, integrate submetering into HVAC and building systems, and document compliance before filing deadlines.
Compliance Risks & What's at Stake
Missing or unfiled submeter installation
Covered tenant spaces without required sub-meters — or a building that fails to file its submeter installation report — can be subject to recurring annual penalties until the meters are installed and reported.
Lighting that doesn't meet the NYCECC standard
Lighting systems that were never upgraded to the new-system energy code standard leave the building out of compliance and exposed to annual penalties assessed until the upgrade is completed and certified.
Mis-metered HVAC loads
If tenant HVAC equipment is wired so its consumption isn't captured by the correct submeter, tenants can be billed inaccurately and the metering may not satisfy the law's intent — creating disputes and rework.
Late or incomplete filing
Compliance reports for LL88 are filed with the Department of Buildings on a defined schedule. Missing the filing window, or filing without complete supporting documentation, can trigger penalties and additional scrutiny.
Uncertified work
LL88 lighting and submeter work generally must be certified by a registered design professional or licensed master/special electrician. Work performed or documented without the proper certification will not satisfy the requirement.
No data visibility after install
Submeters that are installed but not monitored, or HVAC systems with no controls integration, mean you lose the operational and energy-saving value the law is meant to unlock — and you may not catch drift before the next filing.
What Local Law 88 Requires — and Why HVAC Is Part of the Picture
Local Law 88 is part of New York City's Greener, Greater Buildings Plan. It applies to covered buildings — generally a single building larger than 25,000 gross square feet, or multiple buildings on the same tax lot or under the same condominium board that together exceed 100,000 gross square feet. The law has two core mandates. First, lighting systems in covered buildings must be upgraded to meet the standards for new systems under the NYC Energy Conservation Code (NYCECC) — which typically means efficient fixtures plus lighting controls such as occupancy sensors and automatic shutoff. Second, qualifying tenant spaces must be equipped with electrical sub-meters so that each tenant's electrical consumption is measured individually, with monthly statements provided to those tenants. Why does an HVAC contractor matter here? Because a large share of a commercial tenant's metered electrical load is HVAC — supplemental cooling, packaged terminal units, water-source and air-source heat pumps, VRF zones, and tenant-controlled air handling. Accurate submetering, sensible electrification, and integrated controls all sit at the intersection of your mechanical and electrical systems. Com+ helps you understand how your HVAC equipment is wired and loaded, coordinate the metering of those loads, and align the work with the broader energy-compliance obligations your building faces. Note: the certified installation and sign-off of LL88 lighting and submeter work must be performed by a registered design professional or a licensed master or special electrician; Com+ works alongside those licensed parties on the mechanical scope.
How Com+ Helps You Comply
Why Owners Bring Com+ Into Their LL88 Plan
Our Simple Process
From call to comfort in 4 easy steps
1. Assess
We survey your building's HVAC systems, identify covered tenant spaces, and document how mechanical equipment is loaded and wired — so you have a clear picture of what LL88 means for your specific building and where the gaps are.
2. Plan
We develop a scoped plan covering tenant HVAC submetering coordination, any efficiency or electrification upgrades, and controls integration — sequenced around your filing deadline and coordinated with your licensed electrician and design professional.
3. Implement
We execute the HVAC scope: equipment upgrades, controls and BMS integration, and the mechanical coordination needed for accurate tenant load metering — minimizing disruption to occupied tenant spaces.
4. Document
We compile equipment schedules, load data, submeter coordination records, and as-built documentation to support your LL88 filing, and we hand off a clean record set for your team and certifying professional.
Types of Systems We Install
Tenant HVAC Submetering Coordination
Accurate LL88 submetering depends on knowing how each tenant's HVAC equipment is fed and loaded. Com+ maps and coordinates the mechanical side so tenant cooling and heating loads land on the correct sub-meter, working hand-in-hand with the licensed electrician who installs and certifies the meters.
- •Mapping of HVAC circuits to tenant spaces
- •Coordination of cooling, heat-pump, and air-handling loads
- •Support for accurate monthly tenant statements
- •Documentation of metered mechanical loads for filing
High-Efficiency & Electrified HVAC
Upgrading to high-efficiency and electrified HVAC — heat pumps, VRF, and modern controls — reduces the electrical consumption that LL88 submeters measure and aligns your building with NYC's broader energy-compliance trajectory.
- •Air-source and water-source heat pumps
- •VRF and high-efficiency packaged systems
- •Reduced metered tenant consumption
- •Supports broader NYC energy mandates
HVAC Controls & BMS Integration
Direct digital controls and building management system integration tie HVAC scheduling, lighting controls, and submeter data together — giving you the visibility to operate efficiently and the records to support compliance.
- •DDC/BMS integration for HVAC equipment
- •Coordination with NYCECC lighting controls
- •Submeter and energy-data visibility
- •Automatic scheduling and setback strategies
Why Com+ Mechanical
Commercial HVAC specialists
We focus on commercial and multi-tenant buildings across the NYC metro — the building types Local Law 88 covers.
Compliance-minded approach
We frame HVAC work around your regulatory obligations and the energy code, not just equipment swaps, so the work actually supports your filing.
Coordinated, not siloed
We work alongside your licensed electrician, design professional, and property-management team so the mechanical scope fits the larger compliance effort.
Built for documentation
We organize equipment and load records up front so you're not scrambling for paperwork when it's time to file.
Transparent Pricing
No fees. No surprises. Just honest service.
Compliance Assessment
The right starting point for most owners. We evaluate your building's HVAC systems and tenant spaces against LL88, identify gaps, and deliver a prioritized plan.
- On-site HVAC and tenant-space survey
- Identification of covered tenant spaces and HVAC loads
- Gap analysis against LL88 lighting and submetering obligations
- Prioritized, plain-English compliance roadmap
- Coordination guidance for your electrician and design professional
Upgrades & Retrofits
For buildings ready to act — efficiency and electrification upgrades, controls integration, and the HVAC coordination behind accurate tenant submetering.
- High-efficiency HVAC equipment upgrades
- Electrification and heat-pump retrofits
- HVAC controls and BMS/DDC integration
- Mechanical coordination for tenant load submetering
- As-built and equipment documentation for filing
Ongoing Compliance & Maintenance
For owners who want upgraded systems and meters to keep performing — monitoring, maintenance, and readiness for future filings.
- Scheduled preventive maintenance on HVAC systems
- Submeter and energy-data monitoring support
- Performance reviews against efficiency targets
- Documentation upkeep for recurring filings
- Priority response for compliance-critical issues
All pricing is scoped after an on-site compliance assessment and depends on your building size, tenant mix, existing HVAC and electrical configuration, and the work required. Pricing reflects the HVAC/mechanical scope only; certified lighting and submeter installation is performed and signed off by a licensed master/special electrician or registered design professional.
Own a Commercial Property?
Business+ plans start at $499/year — includes 2 rtu tune-ups, 10% off all services, and priority scheduling.
Equipment & Brands We Service
Factory-trained technicians for all major HVAC manufacturers
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Frequently Asked Questions
Get answers to common questions about our services
Does Local Law 88 apply to my building?
Generally, yes if you own or manage a single building larger than 25,000 gross square feet, or multiple buildings on the same tax lot or under the same condominium board that together exceed 100,000 gross square feet. There are nuances by building type and use, so the safest path is a building-specific assessment.
What exactly does the law require?
Two things. Your lighting systems must be upgraded to meet the NYC Energy Conservation Code standards for new systems — which typically includes efficient fixtures and lighting controls. And qualifying tenant spaces must have electrical sub-meters so each tenant's consumption is measured individually, with monthly statements provided to those tenants.
Why would an HVAC contractor be involved in a submetering and lighting law?
Because much of a commercial tenant's metered electricity is HVAC — supplemental cooling, heat pumps, packaged terminal units, VRF zones, and tenant air handling. Com+ helps make sure those mechanical loads are correctly understood and captured by the right submeter, integrates HVAC and lighting controls where they overlap, and pursues efficiency upgrades that lower the consumption being measured. We work alongside your licensed electrician, who performs and certifies the metering and lighting installation itself.
What is the compliance deadline?
Lighting upgrades and submeter installation were tied to a January 1, 2025 effective requirement, with compliance reports filed with the Department of Buildings on a defined schedule. Filing-year 2026 reports for buildings not yet demonstrating compliance are commonly cited as due May 1, 2026, and extension situations have changed over time.
What happens if my building isn't compliant?
Non-compliance can lead to recurring penalties — for example, annual penalties for failing to install or report submeters in covered tenant spaces, and annual penalties for lighting that doesn't meet the energy code standard — assessed until you come into compliance. Beyond penalties, mis-metered tenants and undocumented work create billing disputes and rework.
How do we get started?
Start with a compliance assessment. Com+ surveys your HVAC systems and tenant spaces, identifies where you stand against LL88, and delivers a prioritized plan you can act on — coordinated with your electrician and design professional. Call (332) 600-4640 to schedule.
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Get Ahead of Your Local Law 88 Deadline
Filing deadlines and penalties for Local Law 88 don't wait. The earlier you assess where your building stands, the more time you have to coordinate HVAC submetering, complete upgrades, and assemble clean documentation — without a last-minute scramble. Com+ Mechanical helps building owners and property managers across the NYC metro get it right. Call (332) 600-4640 or schedule your compliance assessment today.
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