Rezoning

A rezoning is an amendment to the zoning map — redrawing district boundaries or replacing one district with another — enacted through the ULURP public process. City-initiated rezonings implement neighborhood plans across many blocks; private applications change the map for a project's defined area. Once adopted, the new districts govern all future development within them.

Rezonings leave the map's most consequential artifacts: boundaries that split lots, Mandatory Inclusionary Housing areas mapped alongside residential upzonings, and recorded commitments negotiated during approval. Existing buildings that exceed the new rules continue as non-complying; existing projects race the adoption date to vest. A lot's zoning is, in effect, the residue of its last rezoning.