LL97 Covered Buildings List FAQs

A BBL (borough, block and lot) is a 10-digit identifier provided to the Department of Buildings (DOB) by the Department of Finance (DOF), to identify the tax lots containing buildings that meet the square footage threshold of LL97. A BBL can include one building or multiple buildings. Note that LL97 compliance requirements must be demonstrated at the building level (as designated by a Building Information Number, or BIN) rather than BBL level.

If you believe your building is erroneously listed on the LL97 CBL due to the square footage of your building, contact the NYC Department of Finance at sustainablebuildings@finance.nyc.gov. Please include the following in the email:

• borough, block, and lot number of the building
• contact information: name, email address and/or telephone number
• explanation of your dispute and RDP certification if applicable

If you believe your building is a “garden style apartment” as described in exception #2 of the definition “covered building” in § 28-320.1 of the NYC Administrative Code or exception #1 of the definition of “covered building” in § 28-321.1 of the NYC Administrative Code, email ghgemissions@buildings.nyc.gov with subject line: CBL Dispute. Please include the following in the email:

• BBL and BIN for such building
• contact information: name, email address and/or telephone number
• Documentation signed and stamped by a registered design professional (RDP) including all of the following information:
  • Documentation demonstrating the covered building is three stories or less.
  • NYC Department of Finance (DOF) tax records classifying the covered building as residential Property Type.
  • Proof of the occupancy group on the Certificate of Occupancy (CO).
  • Provide a statement that no central HVAC or hot-water systems in the covered building serve more than 25,000 (2322.5 m2) gross square feet.
  • Provide a date stamped picture of the building, within the past year, with a geo-tag.
  • A single letter may cover multiple lots, blocks, or BBLs, as long as they are contiguous and under the same ownership in DOF records.

Yes. Previously, DOB provided different CBLs for each of the LL97 compliance pathways. The current LL97 CBL combines all compliance pathways identified for a BBL into a single document. It is still true that for BBLs with multiple buildings, the CBL does not distinguish which building/BIN is subject to a particular compliance pathway. Compliance pathway(s) must be confirmed in LL97 compliance reports at the BIN level.

Multiple compliance pathways may apply to a BBL because:

1. There are multiple buildings on the BBL.
   LL97 requires compliance at the level of an individual building (as designated by a Building Information Number, or BIN), even though the identifying information in the CBLs are tax lots (as designated by a Borough-Block-and-Lot number, or BBL). If there are multiple buildings on a BBL, such buildings may be subject to different compliance paths. Each building must demonstrate compliance with the compliance path that is appropriate for that building, regardless of the appropriate compliance path for other buildings on the same lot.
2. A building qualifies for multiple compliance paths.
   If one building qualifies for multiple compliance paths, such building is required to demonstrate compliance with the highest tiered compliance path, as identified by the CBL Matrix. The tiers are listed below from lowest to highest:

• • All Article 320 properties “CP0”
  • 2026 Rent Regulated “CP1”
  • 2035 Income Restricted “CP2”
  • Article 321 “CP3”
  • City Buildings/NYCHA “CP4”

For example, if a building is classified as BOTH CP0 and CP2, the higher tier is CP2 and the building should demonstrate compliance with CP2. Where there is uncertainty regarding a building’s compliance pathway due to the affordability status of the dwelling units in such building, consult the CBL Matrix.

If you believe your building is erroneously listed on the LL97 CBL due to a characteristic of the building other than the square footage, email ghgemissions@buildings.nyc.gov with subject line: CBL Dispute. Please include the following in the email:

• BBL and BIN for such building
• contact information: name, email address and/or telephone number
• explanation of your dispute and any documentation requirements listed on the CBL Matrix for the compliance pathway that you believe your building is subject to.

If you believe that one or more unit, but less than 35% of the dwelling units, or that more than 35% of the dwelling units in your building are rent regulated, and this is not reflected on the CBL, email ghgemissions@buildings.nyc.gov with subject line: CBL Dispute. Please include the following in the email:

• BBL and BIN for such building
• contact information: name, email address and/or telephone number
• explanation of your dispute and any documentation requirements listed on the CBL Matrix for the compliance pathway that you believe your building is subject to
• If the units in the building are rent stabilized only: a Department of Housing and Community Renewal certified ‘Annual Registration Summary’ from the current or previous calendar year. If the units in the building are rent controlled: a signed letter from a lawyer confirming 1 or more units but less than 35% of the dwelling units OR over 35% of the dwelling units in the building are rent regulated (rent controlled or rent stabilized).

LL97 defines “house of worship” as a building whose main use or dominant occupancy is classified as occupancy group A-3 of 2022 NYC BC or equivalent to A-3 from prior codes, i.e., religious house of worship. This means that greater than 50% of the building is used as assembly space for religious worship purposes. Such buildings are subject to Article 321 “CP3.” DOB requires these building owners to self-identify as follows:

• Building owners submit ‘House of Worship Verification Form’, and ‘House of Worship Use Verification Sheet’ along with the Article 321 compliance report in the LL97 Reporting Portal.
• For building owners who have already emailed the two forms above to GHGemissions@buildings.nyc.gov and received an email from BEAM_LL97@buildings.nyc.gov with the subject noting “Verified – House of Worship”, submit the PDF print of the verification email in lieu of the two forms along with the Article 321 compliance report in the LL97 Reporting Portal.

The 421-a Tax Incentive alone is not enough to determine a building’s compliance path under LL97. While in receipt of 421-A tax benefits, the rental units in a building will likely be rent stabilized, but following expiry of the tax benefits these units may be de-stabilized and the building may no longer be subject to Article 321. A building must participate in one of the programs listed on the CBL Matrix to qualify for an alternative compliance path under the law.

If there are multiple BBLs associated with a building, DOB will need the building owner to confirm the preferred BBL to be used going forward. Such building owner should submit their LL97 report under the BBL that best represents the building (the primary BBL), and then submit documentation under any additional BBLs (secondary BBLs) identifying the building’s primary BBL. Note: LL97 compliance, including the submission of reports and assessment of any penalties, is at the level of an individual building (as designated by a Building Information Number, or BIN). Individual buildings are nested under tax lots (as designated by a Borough-Block-and-Lot number, or BBL).

If you need to update the owner information on your building – for example, where a co-op shareholder is receiving communications as if that individual is the owner of entire co-op, you can share contact information for the appropriate person with DOB at ghgemissions@buildings.nyc.gov. You may also update the owner information on your building when submitting the first LL97 compliance report in 2025, the first reporting year for LL97.