How a massive Manhattan skyscraper became the world's largest privately owned office building
In short: Completed in 1972, 55 Water Street transformed the Lower Manhattan waterfront. Spanning 3.5 million square feet, this architectural giant was built on reclaimed land and required a unique concrete cofferdam foundation. It remains a landmark of urban planning, featuring an elevated public plaza that helped its developers bypass strict zoning laws.
When the Uris Buildings Corporation proposed 55 Water Street in October 1968, it was the first project under the Lower Manhattan Plan. To construct the 53-story tower, developers had to close two streets, Cuylers Alley and Front Street, and combine four city blocks into a single superblock. Because the site was originally part of the East River, the foundation required a specialized concrete cofferdam that descended to bedrock, allowing for underground offices and a massive bank vault for Chemical Bank.
The building’s design, led by Emery Roth & Sons, prioritized views of the East River by orienting the rectangular south tower parallel to the site’s boundary. To secure extra floor area beyond standard zoning limits, the developers committed to creating public spaces, including the Elevated Acre—a 40,000-square-foot plaza 30 feet above street level—and the expansion of Jeannette Park, later rededicated as Vietnam Veterans Plaza in 1985. These amenities were central to the building's identity as a premier financial hub.
By the time it topped out on June 18, 1971, the project had secured record-breaking financial backing, including a $150 million mortgage from Prudential Insurance. However, the building faced significant volatility. After the 1970s, it transitioned through various owners, including Olympia and York, before being purchased by the Retirement Systems of Alabama in 1993. Throughout its history, the structure has undergone multiple renovations, replacing original travertine lobbies with modern LED displays and upgrading mechanical systems to reduce carbon emissions, reflecting the shifting demands of Manhattan's competitive office market.
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- Summary by Intellect · source: 55 Water Street
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