New Yorks zoning code was the first in the country, meant to promote a healthier city, which was then filling with filthy tenements and office towers. Since it was approved in 1916, the ever-evolving, byzantine code has changed many times to suit the needs of a swollen metropolis. Just in March, the administration of Mayor Bill de Blasio won approval for a vast citywide plan that would encourage sleeker, more affordable developments.
Yet many of New Yorks buildings remain stuck in the past.
Whole swaths of the city defy current zoning rules. In Manhattan alone, roughly two out of every five buildings are taller, bulkier, bigger or more crowded than current zoning allows, according to data compiled by Stephen Smith and Sandip Trivedi. They run Quantierra, a real estate firm that uses data to look for investment opportunities.
Mr. Smith and Mr. Trivedi evaluated public records on more than 43,000 buildings and discovered that about 17,000 of them, or 40 percent, do not conform to at least one part of the current zoning code. The reasons are varied. Some of the buildings have too much residential area, too much commercial space, too many dwelling units or too few parking spaces; some are simply too tall. These are buildings that could not be built today.
