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

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

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

The undertaking has now accomplished the town’s Uniform Land Use Evaluate Process, securing Midtown Particular District approvals that permit switch of improvement rights from landmarked properties and grant a public concourse bonus and qualifying website waivers, in accordance with metropolis planning information. The motion was labeled as a Sort I overview underneath the Metropolis Environmental High quality Evaluate course of, a designation utilized to tasks presumed to have the potential for vital 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 programs. The evaluation anticipates an roughly 82-month building interval.

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

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

Approvals affirm 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 attain 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 building and mandating that HVAC and scorching water programs be powered by electrical energy moderately than on-site combustion. The willpower additionally requires a Development 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 building.

In its Feb. 9 Securities and Trade Kind 8-Okay 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 doubtless represents complete building flooring space, whereas the SEC disclosure seems to mirror rentable or zoning flooring space used for investor reporting. Vornado didn’t instantly reply to a request to reconcile the figures.

Beneath 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, in accordance with the identical submitting.

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