Manhattan’s Commercial Real-Estate Surge: Groundbreakings, Demolitions, and High-Profile Acquisitions

During the week of July 12, 2026, three high-visibility actions underscored a robust Manhattan office market. Silverstein Properties broke ground on the new American Express headquarters at Two World Trade Center, marking the first construction phase of the long-delayed World Trade Center redevelopment. Full-scale demolition began on the 1,414-foot 350 Park Avenue tower, a project led by Vornado, Rudin, and Citadel founder Ken Griffin. Simultaneously, Airbnb purchased 281 Park Avenue South for $81.5 million, acquiring a landmark building previously owned by a Protestant church organization and later held by Aby Rosen’s RFR.

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Mayor Zohran Mamdani praised the Amex project, stating, “I am proud to welcome American Express’s new global headquarters to Lower Manhattan. This is not just a sign of confidence in the future of our city — it is an investment in thousands of good jobs, the local economy, sustainability and the final piece of the rebuilt World Trade Center.” Rosen, whose firm restored the Airbnb acquisition, added, “Great buildings reward great stewardship. We bought 281 Park Avenue South because it’s a masterpiece, restored it with the care a landmark deserves, and this outcome is the result.” Griffin’s near-million-square-foot lease commitment for two Citadel companies was noted as a further indicator of confidence.

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Quarter-two surveys from major brokerages reported Manhattan vacancy rates ranging from 13.4 % (Colliers) to 19.3 % (Cushman & Wakefield). Cushman’s vice-president for U.S. corporate communications Garrett Derderian explained the higher figure: “We keep the leased availability in our statistics until the tenant is presumed to physically occupy the space.” He added, “It’s the most accurate way to calculate absorption which is why we use this methodology.” Other firms—JLL, CBRE, Newmark, and CoStar—cited vacancy rates between 13.4 % and 14.4 %.

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Mayor Mamdani and Democratic congressional candidate Brad Lander have publicly criticized Airbnb’s short-term-rental model, a stance echoed by earlier regulations introduced under Mayor Eric Adams. Critics argue that such corporate moves could exacerbate housing affordability concerns, even as developers and investors highlight the economic benefits of sustained office-space demand.

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• “I am proud to welcome American Express’s new global headquarters to Lower Manhattan. This is not just a sign of confidence in the future of our city — it is an investment in thousands of good jobs, the local economy, sustainability and the final piece of the rebuilt World Trade Center.” — Zohran Mamdani, Mayor of New York City

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• “Great buildings reward great stewardship. We bought 281 Park Ave. South because it’s a masterpiece, restored it with the care a landmark deserves, and this outcome is the result.” — Aby Rosen, Founder of RFR

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• “We keep the leased availability in our statistics until the tenant is presumed to physically occupy the space.” — Garrett Derderian, Vice-President, U.S. Corporate Communications, Cushman & Wakefield

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• “ He said, “It’s the most accurate way to calculate absorption which is why we use this methodology.” — Garrett Derderian, Vice-President, U.S. Corporate Communications, Cushman & Wakefield

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