1,600-ft Midtown Manhattan Supertall Enters DOB Review as Citadel Secures Majority Stake

Vornado filed a brand new constructing utility on Oct. 3, 2025, describing the development of the commercial high-rise at 340 Park Ave., the DOB umbrella handle for the assemblage that features 350 Park. 

The submitting lists whole constructing flooring space of two,077,720 sq ft and enrolls the undertaking within the company’s Main Initiatives Improvement Program. DOB records determine Michael F. Ritchie of AAI Architects P.C., related to Adamson Associates, as architect of file. The filings don’t but record a basic contractor.

The undertaking has now accomplished town’s Uniform Land Use Overview Process, securing Midtown Particular District approvals that enable switch of improvement rights from landmarked properties and grant a public concourse bonus and qualifying website waivers, based on metropolis planning data. The motion was categorised as a Sort I overview beneath the Metropolis Environmental High quality Overview course of, a designation utilized to tasks presumed to have the potential for important environmental impacts.

2M-Sq-Ft Program, 82-Month Buildout

Environmental overview paperwork present an in depth image of the tower’s scale and execution profile. The CEQR determination describes an workplace constructing rising about 1,600 ft and containing roughly 1.57 million sq ft of workplace and trading-floor house, 22,604 sq ft of retail, roughly 303,694 sq ft of mechanical house and 156,220 sq ft beneath grade for parking and constructing methods. The evaluation anticipates an roughly 82-month development interval.

The unusually massive mechanical allocation displays the ability and cooling calls for of high-density buying and selling operations and the shift to completely electrical constructing methods, each of which improve gear flooring space in contrast with conventional fossil-fuel-based HVAC crops.

The 1,600-ft determine displays the architectural mass studied for environmental impacts. In contrast, the DOB submitting lists a high-rise dedication of 1,112.43 ft measured from the best occupied flooring to the bottom hearth division vehicular entry for constructing code functions.

Approvals verify the undertaking will incorporate a 12,500-sq-ft public concourse and switch improvement rights from landmarked properties, together with St. Patrick’s Cathedral and St. Bartholomew’s Church, to realize its allowable flooring space.

As a part of the environmental determinations, the location carries a brand new (E) designation requiring soil, groundwater and vapor testing earlier than development and mandating that HVAC and sizzling water methods be powered by electrical energy reasonably than on-site combustion. The dedication additionally requires a Building Safety Plan to safeguard adjoining historic properties and a restrictive declaration incorporating Division of Environmental Safety air pollution controls, together with particulate matter emission limits and on-site mud administration throughout development.

In its Feb. 9 Securities and Change Kind 8-Ok submitting, Vornado described the undertaking as a 1.85-million-sq-ft workplace tower anchored by Citadel. The bigger gross flooring space mirrored in CEQR and DOB filings seemingly represents whole development flooring space, whereas the SEC disclosure seems to replicate rentable or zoning flooring space used for investor reporting. Vornado didn’t instantly reply to a request to reconcile the figures.

Underneath the three way partnership construction outlined within the Feb. 9 submitting, Vornado and the Rudin household have till July 2026 to find out whether or not to retain a minority stake or train a $1.2-billion put choice tied to the assembled 350 Park website, which additionally contains 39 E. 51st St. and 40 E. 52nd St.

Individually, Vornado is advancing redevelopment of 623 Fifth Ave., a 36-story, 383,000-sq-ft workplace condominium it acquired Sept. 4, 2025, for $218 million and plans to reposition for 2027 supply, based on the identical submitting.

Taken collectively, the filings present considered one of Midtown Manhattan’s largest proposed workplace towers advancing by way of technical overview with a multi-year development timeline, substantial mechanical capability, deep below-grade work and outlined environmental compliance necessities shaping execution.