Existing sitesOlder buildings and existing rooftop equipment
Existing buildings get a narrow break, but it is easy to misunderstand.
Limited exemption: Equipment lawfully installed on or before December 5, 2024 may be exempt if it does not rise above the rooftop parapet and does not rise more than 6 feet above roof level. Even then, equipment that already required screening under older rules must still be screened on all sides.
Replacements: New equipment must meet current screening rules unless the swap is in-kind (same footprint and same height) and the old unit was in place before December 6, 2023. If you upgrade size, height, or capacity, treat the job as a fresh compliance review.
NYC rules change and staff interpretations evolve. Confirm every assumption with your authority having jurisdiction before you buy material or lock a layout.