The Equitable Building: The Shadow That Wrote a Law

The Equitable Building stands at 120 Broadway, between Pine and Cedar Streets, on the block where the old Equitable Life Assurance Society had stood for fifty years before a fire in January 1912 destroyed it. The current building opened in 1915. From the outside it does not announce itself as historically important. It is a tall H-shaped office block in pale stone, with a flat top and no decorative crown. People walk past it on Broadway every day without registering that it is there.

What this building did to Lower Manhattan in 1915 produced the first citywide zoning code in the United States. Every Manhattan skyscraper built between 1916 and 1961 was shaped, directly or indirectly, by the law that the Equitable Building forced into existence. The setback silhouette of the Chrysler Building, the wedding-cake mass of 40 Wall Street, the stepped pyramid of the Empire State Building. None of those silhouettes was an aesthetic choice. All of them were the regulatory consequence of this one tower.

The building's design

The site was a relatively narrow lot on the east side of Broadway. The Equitable Life Assurance Society, which had owned the lot since the 1860s, rebuilt after the 1912 fire with a building designed to maximise rentable floor area on a constrained footprint. The architects were Ernest R. Graham of D. H. Burnham and Company, with Peirce Anderson as architect-in-charge. Daniel Burnham, the firm's founder, had died in 1912; the Equitable was one of the major late projects of the firm under Graham's direction.

The design was an H-shaped plan, with two long wings running east-west and a connecting bar in the middle. The H shape was a daylighting strategy. Every office on every floor was within roughly twenty feet of an exterior window, which was the maximum distance an office could be from natural light in the era before practical fluorescent illumination. Sheet-glass and electric lighting had improved through the 1900s and 1910s, but the standard rule was that an interior office without a window was unrentable. The H plan delivered maximum window perimeter for the floor plate.

The building was forty stories. The total height was 555 feet at the cornice. The construction was a steel frame with masonry cladding, in the standard pattern of New York commercial construction since the 1890s. The structural type was unremarkable. What was unprecedented was that the building rose sheer from the property line on all four sides, with no setbacks. The earlier generation of tall Manhattan office buildings (the Singer Building of 1908 at 612 feet, the Metropolitan Life Tower of 1909 at 700 feet, the Woolworth Building of 1913 at 792 feet) had all carried significant setbacks in their upper stages, partly for aesthetic reasons inherited from Beaux-Arts composition and partly because their lots had been large enough that voluntary setback did not significantly compromise rentable area. The Equitable's lot was narrow. The economic calculation favored a sheer wall.

The total floor area inside the H was 1.8 million square feet on a lot of slightly less than one acre. The floor area ratio (in the language of zoning that the Equitable would help invent) was about thirty. By the 1916 code that followed, the maximum allowable FAR in the same district was twelve. The Equitable, on its own lot, contained more floor area than the law that followed it would have permitted on the same ground by a factor of two and a half.

The shadow

The architectural object the public confronted in 1915 was not the H plan or the floor area ratio. It was the shadow.

A sheer 555-foot wall in a dense Lower Manhattan block casts a substantial shadow. The Equitable's shadow at noon on the winter solstice covered roughly seven acres of surrounding property. The Singer Building across Broadway was put into permanent shadow on its lower twenty-seven floors. The City Investing Building, immediately south, lost direct sunlight on its lower twenty-four floors. The street-level pedestrian environment on Broadway between Pine and Cedar was in shadow for most of the working day through most of the year.

The press response was severe. A 1916 article in the Manhattan Real Estate Record called the building "a monstrous parasite on the veins and arteries of New York." Critics described the Equitable as a violation of the public's right to sunlight and air. Adjacent property owners filed for reduced tax assessments on the grounds that the Equitable had taken rentable value from their buildings without compensation. Public health advocates argued that the building set a precedent that, if generalized, would produce a downtown of permanent shadow with attendant public-health consequences for residents and workers.

The Equitable was not, in 1915, an unusually tall building by Manhattan standards. The Woolworth Building, finished two years earlier, was 237 feet taller. The Singer Building was 57 feet taller. What made the Equitable different was the combination of sheer mass with a narrow lot. The Singer and the Woolworth had carried their height in slim towers set on broader bases; their massing was vertical. The Equitable was nearly cubic. It read, from the sidewalk, as a wall, not a tower.

The shadow was the political fact. The shape was the architectural fact. Both fed directly into the law.

The 1916 Zoning Resolution

The Manhattan Borough President, Edward F. Boyle, appointed a Heights of Buildings Commission in 1913 that had been working on a draft zoning code for two years when the Equitable opened. The political opposition to comprehensive zoning, mostly from real-estate interests who feared restrictions on their development rights, had been substantial. The Equitable's shadow, and the public response to it, broke the political deadlock. A revised draft was prepared in early 1916. The Board of Estimate and Apportionment adopted the Zoning Resolution on 25 July 1916.

The 1916 code was the first comprehensive zoning ordinance in any major American city. It divided the city into use districts (residential, business, unrestricted) and bulk districts (with different height envelopes). The bulk envelope was the part the Equitable produced.

The 1916 envelope formula required that, above a certain height equal to a multiple of the street width, the building had to step inward inside a diagonal plane. The multiple was 1.5 in some districts, 2 on wider streets, 2.5 on the widest. The diagonal plane sloped inward at a fixed angle from the property line. A building could rise straight up to the first setback line, then it had to step back. It could rise again to the second setback line, then step back again. The pattern continued up the height of the building.

The code also permitted a tower of unlimited height on twenty-five percent of the lot, set back from the property line. This was the "tower-on-base" provision that made the slim spire on a broad podium architecturally legal at unlimited height as long as the slim portion occupied no more than a quarter of the ground.

The combination of the setback envelope and the twenty-five percent tower produced the wedding-cake silhouette. Architects of the next four and a half decades worked inside this envelope. The stepped pyramidal massing of the Chrysler, the 40 Wall Street, the Empire State, the Daily News Building, the AT&T Building, 70 Pine Street, 20 Exchange Place, and One Wall Street is in every case the setback envelope filled to its legal maximum. The Art Deco ornamental programme is the decorative finish; the silhouette is the law.

What survived

The Equitable was designated a National Historic Landmark in 1978, on the grounds that it was the building that produced the 1916 Zoning Resolution. The designation language explicitly named the regulatory consequence as the historical significance. There is no Equitable Building cult, no architectural celebration of its design, no postcard market for the building itself. Its importance is what it caused, not what it is.

It still stands. Its tenants have changed many times. The H plan still works, though most modern office configurations have abandoned the rigid window-perimeter rule that the H plan was designed to optimize. The shadow it casts is still there, though it has been incorporated into the lighting plans of the surrounding buildings for over a century. The block of Broadway it sits on is still in shadow through most of the working day in winter.

What to look for

Stand on the west side of Broadway between Pine and Cedar, looking east at the building's main façade. The two H wings are visible. The flat top with no setback is the visible feature that produced the law. There is no decorative crown, no spire, no upper massing. The building stops abruptly at the cornice line at the property edge.

Then walk south along Broadway one block to the corner of Cedar and Trinity Place. Look back north at the south face. From this angle you can see the full sheer wall: 555 feet from sidewalk to cornice, no setbacks, no relief. This is the wall that produced the seven-acre shadow.

Now compare what you are seeing with any other Lower Manhattan tower built after 1916. 40 Wall Street, one block east, has setbacks at the 17th, 19th, 21st, 26th, 33rd, and 35th floors. 70 Pine Street, two blocks east, has a regular stepped silhouette. One Wall Street, three blocks west, has curving inward-bowed setbacks. Each of those buildings is filling the regulatory envelope that the Equitable's shadow forced into law.

The Equitable is the building that has no setbacks, because the law that required setbacks did not exist yet when it was built. Every other tall building in this district was shaped by the response to it.

You are standing in front of the question. The next two miles of the tour are the answer.