Zoning shapes the city. Compared with architecture and planning, zoning has a relatively short history as a means of organizing the way land is used. Zoning determines the size and use of buildings, where they are located, and in large measure, the density of the city’s diverse neighborhood. As early as the 1870s and 1880s, New Yorkers began to protest the loss of light and air as taller residential buildings began to appear in Manhattan. In response, the state legislature enacted a series of height restrictions on residential buildings.
By then, New York City had become the financial center of the country and expanding businesses needed office space. With the introduction of steel frame construction techniques and improved elevators, technical restraints that had limited building height vanished. The Manhattan skyline was beginning to assume its distinctive form. In 1915, when the 42-story Equitable Building was erected in Lower Manhattan, the need for controls on height and form of all buildings became clear. Rising without setbacks to its full height of 538 feet, the Equitable Building cast a seven acre shadow over neighboring buildings, affecting their value and setting the stage for the nation’s first comprehensive zoning resolution. The concept of enacting a set of laws to govern land use and bulk was revolutionary, but the time had come for the city to regulate its surging physical growth.
The groundbreaking Zoning Resolution of 1916, though a relatively simple document, established height and setback controls and designated residential districts that excluded what were seen as incompatible uses. It fostered the iconic tall, slender towers that came to epitomize the city’s business districts and established the familiar scale of three to six story residential buildings found in much of the city. The new ordinance became a model for urban communities throughout the United States as other growing cities found the New York’s problems were not unique. While other cities were adopting the New York model, the model itself refused to stand still. The Zoning Resolution was frequently amended to be responsive to major shifts in population and land use caused by continuing waves of immigration that helped to swell the city’s population.
By mid-century, many of the underlying planning principles of the 1916 document no longer stood the test of time. New theories were capturing the imaginations of planners. Le Corbusier’s “tower-in-the-park” model was influencing urban designers of the time and the concept of incentive zoning, where trading additional floor area for public amenities began to take hold. The last, still vacant areas on the city’s edges needed to be developed at densities that recognized the new, automobile oriented lifestyle. Also, demands to make zoning approvals simpler, swifter and more comprehensible were a constant. Eventually, it was evident that the original 1916 framework needed to be completely reconsidered. After lengthy study and public debate, the current Zoning Resolution was enacted and took effect in 1961.
The 1961 Zoning Resolution was a product of its time. It coordinated use and bulk regulations, incorporated parking requirements and emphasized the creation of open space. It introduced incentive zoning by adding a bonus of extra floor space to encourage developers of office buildings and apartment towers to incorporate plazas into their projects. In the city’s business districts, it accommodated a new type of high-rise office building with large, open floors of a consistent size. Elsewhere in the city, the 1961 Zoning Resolution dramatically reduced residential densities, largely at the edges of the city. Although based upon the leading planning theories of the day, aspects of those zoning policies have revealed certain shortcomings over the years. The emphasis on open space sometimes resulted in buildings that overwhelm their surroundings, and the open spaces created by incentive zoning provisions have not always been useful or attractive. Urban design theories have changed as well. Today, tower-in-the-park developments, set back far from the city street, are often viewed as isolating and contrary to the goal of creating a vibrant urban street scape. Time passes, land uses change, and zoning policies accommodates, anticipates and guides those changes. In a certain sense, zoning is never final; it is renewed constantly in response to new ideas and to new challenges.
References:
http://www.nyc.gov/html/dcp/html/zone/zonehis.shtml
http://www.nytimes.com/2003/12/14/realestate/the-alchemy-of-a-zoning-bonus.html?page wanted=all&src=pm
http://www.nytimes.com/1988/03/20/realestate/perspectives-inclusionary-zoning-new-bonuses-spur-low-income-units.html?pagewanted=all&src=pm
