NYC DOB Announces Changes to Zoning Use Groups
The New York City Department of Buildings (NYC DOB) recently released an important update regarding changes to the Zoning Resolution (ZR) and the classification of zoning Use Groups. These changes impact how buildings are classified and will affect new job applications and alterations that require a Certificate of Occupancy (CO). This change aims to simplify the current system, making it easier for builders, developers, and owners to align with the zoning requirements.
As of June 6, 2024, the Use Groups have been revised from the previous numbering system (1 through 18) to a new set of ten Roman numerals, ranging from I to X. This shift is designed to streamline zoning categories and clarify regulations. Each Use Group category has also been restructured, with new Use Groups and subcategories (like A, B, and C) added where applicable. This means that for new building (NB) and alteration applications impacting the CO (Alt-CO), the correct new Use Group classifications must now be used in documents.
Starting July 1, 2024, all applicants will need to reference the revised Zoning Resolution in their applications, ensuring compliance with the latest Use Group classifications. This change is especially relevant for buildings where alterations affect the CO. For instance, NB and Alt-CO applications submitted after this date will need to use the updated zoning Use Group numbers for any floors involved in the project. To assist with these changes, NYC DOB has provided equivalency tables on the Department of City Planning (DCP) website to help users translate old Use Group numbers into the new system.
For those with existing applications approved before July 1, 2024, there are some allowances. If a Temporary Certificate of Occupancy (TCO) was granted before this date, applicants may continue using the older Use Group classifications, although the DOB encourages updating to the new format whenever possible. For projects still under review or in need of a TCO after July 1, compliance with the revised Use Groups will be required.
Furthermore, post-approval amendments (PAAs) submitted after July 1, 2024, can still use the older Use Group classifications on the initial filing. However, the DOB encourages using the new classifications to align with the latest standards. This change represents a major update in NYC zoning regulations, helping to modernize and simplify zoning data for various building projects.
Stay tuned for more updates and information on this and other NYC DOB initiatives.
For more details, refer to the official service update from the NYC DOB’s official website and consult the DCP’s equivalency tables for translation guidance.
If you have questions or need further assistance navigating these updates, feel free to contact us for expert guidance. Stay informed with the latest DOB updates to ensure compliance and smooth project progress.







