NYC building energy compliance can involve several assignments for the same property: annual benchmarking, an energy audit and a separate emissions report.

Owners and property managers need to connect those requirements to their decisions about operating costs and building improvements. Understanding what each requirement addresses makes it easier to see what is complete and what still needs attention.

Local Law 97 emissions limits already apply to many covered buildings, with stricter limits beginning in 2030. As you prepare your next property budget, the immediate questions are which requirements apply, whether the required filings are complete and what the building’s performance means for future planning. 

NYC Building Energy Requirements at a Glance 

Local Law 84 requires annual energy benchmarking and, where applicable, water reporting. Local Law 87 requires covered buildings to undergo energy audits and retro-commissioning on a ten-year cycle. Local Law 97 establishes building emissions requirements, with annual reporting for buildings subject to its Article 320 pathway. 

Each law has its own coverage criteria and reporting requirements. Completing one submission does not establish compliance with the other laws. This guide focuses on these three requirements for private commercial and multifamily properties; other NYC sustainability requirements may also apply. 

Local Law 84: Annual Energy Benchmarking 

Local Law 84, often called LL84, requires owners of covered properties to track and report building energy consumption through the U.S. Environmental Protection Agency’s ENERGY STAR Portfolio Manager. Benchmarking creates a consistent record of energy use and allows owners to compare performance with similar buildings. The NYC Department of Buildings (DOB) publishes benchmarking guidance on the reporting process and applicable water-data requirements. 

The general coverage threshold is a building with more than 25,000 gross square feet. The law also covers certain groups of buildings on the same tax lot, or condominium buildings under the same board of managers, that together exceed 100,000 gross square feet. Exceptions apply, so the size threshold is a starting point for checking coverage. 

A useful benchmark depends on complete information. The City’s benchmarking checklist calls for accurate building identifiers, property-use information and energy data without gaps or overlaps. Owners also need to account for energy sources that utility uploads may not capture, such as delivered fuel oil. Keeping that information organized helps the reporting team identify missing inputs before submission. 

Local Law 87: Energy Audits and Retro-Commissioning

Local Law 87, or LL87, requires energy audits and retro-commissioning for covered buildings every ten years. An energy audit evaluates how a building uses energy and identifies opportunities to reduce consumption. Retro-commissioning examines existing building systems and their operation, including whether they function as intended and meet the building’s operating needs. 

LL87 generally covers buildings with more than 50,000 gross square feet, tax lots with multiple buildings totaling more than 100,000 gross square feet and certain groups of condominium buildings totaling more than 100,000 gross square feet. These thresholds differ from those under LL84 and LL97. 

The work culminates in an Energy Efficiency Report, or EER. Under the standard schedule, the last digit of the property’s tax block number determines the filing year. The City requires the report once every ten years, rather than with each annual benchmarking submission. Its LL87 filing guidance explains the report and professional certification requirements. 

DOB’s LL87 FAQs clarify that the audit and retro-commissioning scope focuses on base building systems. For property teams, that makes the assignment relevant to how the building operates and which energy-saving opportunities warrant further evaluation. The audit findings can inform a planning conversation without replacing the separate assessment needed for LL97. 

Local Law 97: Building Emissions Limits and Reporting 

Local Law 97, or LL97, sets greenhouse gas emissions requirements for covered NYC buildings. Its general coverage includes individual buildings with more than 25,000 gross square feet. It also includes multiple buildings on the same tax lot, or condominium buildings governed by the same board of managers, that together exceed 50,000 gross square feet. The LL97 coverage rules include exceptions and different compliance pathways. 

Article 320 applies to most private buildings covered by LL97 and establishes annual emissions reporting. Certain affordable housing properties follow different provisions, including Article 321. Owners need to confirm the pathway and start date that apply to their specific building before treating a general deadline or limit as their own. 

For buildings on the standard Article 320 schedule, the first emissions-limit period runs from 2024 through 2029, followed by stricter limits in 2030. The implementing rule ties a building’s emissions limit to its floor area and applicable property-use or occupancy classifications. A building-specific review is therefore necessary to determine the relevant limit and compare it with reported emissions. 

Reporting and performance also require separate attention. An owner may need to submit an annual emissions report even when the building operates below its limit. Conversely, submitting a report does not resolve an excess-emissions issue identified in that report. 

How to Check Your Building’s Coverage 

Start with the DOB Sustainability Laws Covered Buildings List. The 2026 list brings together information for multiple sustainability laws. DOB’s Covered Buildings List FAQs explain that LL97 pathways now appear at the individual-building level, identified by a Building Identification Number, or BIN. A borough-block-and-lot number, or BBL, identifies the tax lot, which may contain more than one building. 

Check the building’s characteristics and the applicable law, rather than assuming every building on a lot has the same requirements. DOB also cautions that the list does not determine an owner’s obligations. A property’s absence from the list does not remove requirements that otherwise apply. The list supports the review; it does not replace a property-specific determination. 

For a property team managing several assets, keeping the law, reporting year and filing status distinct for each building creates a clearer starting point for discussion with its technical professionals. It also helps avoid treating a tax-lot record as a complete answer for every building on that lot. 

NYC Energy Compliance Dates for 2026 and 2027

The reporting year and the year covered by the data are different. Annual benchmarking and Article 320 emissions reports generally describe the previous calendar year’s performance. An LL87 EER follows the building’s assigned ten-year cycle. Keep those distinctions visible when reviewing prior submissions or planning the next filing. 

Local Law 84: Annual May 1 Reporting 

The statutory LL84 deadline for reporting 2025 consumption was May 1, 2026. For owners with an outstanding 2026 benchmark, DOB lists November 1 as the next quarterly deadline after August 1. Those quarterly deadlines do not replace the original annual due date or eliminate potential late-filing penalties. 

Under the standing annual schedule, the next standard deadline is May 1, 2027, for 2026 consumption data. Confirm the City’s filing-year instructions and any applicable relief before relying on a particular submission date. 

Local Law 87: December 31 for Buildings Due in 2026 

DOB’s 2026 deadlines notice sets December 31, 2026, as the EER deadline for buildings required to demonstrate LL87 compliance in 2026. Under the standard tax-block schedule, that includes covered properties whose block number ends in 6, subject to applicable exceptions, deferrals or extensions. 

An older notice extending an EER deadline to March 31, 2026, applied to the 2025 filing year only. It did not move the normal December 31 deadline for the 2026 filing year. The original extension notice states that limitation explicitly. 

Local Law 97: The 2026 Filing Windows Have Passed 

For LL97 reports due in 2026, DOB identified May 1 as the annual deadline, followed by an automatic 60-day grace period through June 30. Owners could apply by June 30 to extend the reporting deadline to August 29, 2026. DOB’s 2026 processing guidance confirms those dates. 

Those filing windows have passed as of October 2026. An owner with an unresolved report needs a review of its filing status and applicable next steps, rather than an assumption that another extension remains available. Under the continuing Article 320 annual schedule, the next standard reporting deadline is May 1, 2027, for 2026 emissions, subject to the building’s applicable pathway and current DOB instructions. 

What Happens When an Owner Misses a Requirement? 

Benchmarking and Energy Audit Filing Penalties 

DOB states that failure to benchmark under LL84 may result in penalties of $500 per quarter, totaling up to $2,000 per year. Failure to submit an LL87 EER may result in a $3,000 penalty for the first year and $5,000 for each additional year until the report is submitted. 

Those penalties relate to separate reporting requirements. Paying a penalty does not complete the missing report. The property team still needs to address the underlying filing and any outstanding issues. 

Local Law 97 Reporting and Excess-Emissions Penalties 

For Article 320 buildings, DOB lists an excess-emissions penalty calculation of $268 per metric ton of carbon dioxide equivalent above the annual limit. Failure to submit the required emissions report can trigger a separate calculation of $0.50 per square foot for each month of non-submission, under the applicable penalty rules. 

DOB’s LL97 rules govern when these penalties apply and provide for specified mitigating circumstances. The amount a property may owe depends on its actual reporting and compliance circumstances. A general calculation should not be treated as a final penalty determination. 

Connect LL97 Planning to Your Property Budget

The stricter 2030 emissions limits give owners a reason to look beyond the next filing. A building that meets its current limit may still need a different operating or improvement plan for the next compliance period. Reviewing that question while preparing budgets allows the property team to consider potential changes alongside other building priorities. 

The review can bring together the latest benchmark, available audit findings, building-system information and planned equipment replacements. The purpose is to identify which questions need technical evaluation before the owner commits to a particular improvement. An audit finding alone does not establish that a measure will meet the building’s future emissions requirements. 

For preliminary planning, the City’s LL97 Building Directory brings together energy data and projected emissions. NYC Accelerator explicitly describes it as a planning reference and directs owners to confirm building information, coverage and reporting obligations through official City systems and qualified professionals. That distinction is useful when reviewing a portfolio: preliminary screening can identify questions, while a building-specific assessment determines the appropriate response. 

Frequently Asked Questions About NYC Building Energy Laws