With a few exceptions, air rights can only be transferred to contiguous parcels (the two exceptions in Manhattan that I know of are the "Special West Chelsea Ai

With a few exceptions, air rights can only be transferred to contiguous parcels (the two exceptions in Manhattan that I know of are the "Special West Chelsea Air Rights District" and the midtown rezoning around Grand Central). Curious quirk of NYC real estate: as valuable as air rights are, the City has no formal process to track them other than through the building permit process. There isn't an "air rights" database for example.