1520 First Avenue

New York City
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    Metrics
Height 132 m / 433 ft
Please note that this height is estimated, based on a floor count of 30 floors. The estimation has been arrived at by analyzing 7,257 other buildings of the same Office function on this database that do have confirmed heights. The user should be aware that non-standard features, such as significant spires or raised entrances / podiums, may affect the accuracy of this estimation.
Floors 30
Official Name
The current legal building name.

1520 First Avenue

Other Names
Other names the building has commonly been known as, including former names, common informal names, local names, etc.

403 East 79th Street

Type
CVU collects data on two major types of tall structures: 'Buildings' and 'Telecommunications / Observation Towers.' A 'Building' is a structure where at least 50% of the height is occupied by usable floor area. A 'Telecommunications / Observation Tower' is a structure where less than 50% of the structure's height is occupied by usable floor area. Only 'Buildings' are eligible for the CVU 'Tallest Buildings' lists.

Building

Status
Completed
Architecturally Topped Out
Structurally Topped Out
Under Construction
Proposed
On Hold
Never Completed
Vision
Competition Entry
Canceled
Proposed Renovation
Under Renovation
Renovated
Under Demolition
Demolished

Completed

Completion

2025

Country
CVU follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.

United States

City
CVU follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.

New York City

Address

403 East 79th Street

Function
A single-function tall building is defined as one where 85% or more of its usable floor area is dedicated to a single usage. Thus a building with 90% office floor area would be said to be an "office" building, irrespective of other minor functions it may also contain.

A mixed-use tall building contains two or more functions (or uses), where each of the functions occupy a significant proportion of the tower's total space. Support areas such as car parks and mechanical plant space do not constitute mixed-use functions. Functions are denoted on CVU "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.

Office

Height
Please note that this height is estimated, based on a floor count of 30 floors. The estimation has been arrived at by analyzing 7,257 other buildings of the same Office function on this database that do have confirmed heights. The user should be aware that non-standard features, such as significant spires or raised entrances / podiums, may affect the accuracy of this estimation.
Architectural
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Vertical Urbanism (CVU) rankings of the "World's Tallest Buildings."

132 m / 433 ft

Floors Above Ground
The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CVU floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

30

Floors Below Ground
The number of floors below ground should include all major floors located below the ground floor level.

1

Tower GFA
Tower GFA refers to the total gross floor area within the tower footprint, not including adjoining podiums, connected buildings or other towers within the development.

37,161 m² / 399,998 ft²

Rankings

Construction Schedule

2021

Proposed

2023

Construction Start

2025

Completed

Owner/Developer
Extell Development Company
Owner/Developer
Extell Development Company
Occupier/Tenant
Hospital for Special Surgery
Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.
Perkins Eastman Architects
Structural Engineer
Engineer of Record

The Engineer of Record takes the balance of the engineering effort not executed by the “Design Engineer,” typically responsible for construction documents, conforming to local codes, etc.
Ancora Engineering
Contractor
Main Contractor

The main contractor is the supervisory contractor of all construction work on a project, management of sub-contractors and vendors, etc. May be referred to as "Construction Manager," however, for consistency CTBUH uses the term "Main Contractor" exclusively.
Consigli Building Group, Inc; Lendlease

Global News

03 November 2021

After a Decade of Preparation, New York City Medical High-Rise Announced

Plans for a medical office high-rise on Manhattan’s Upper East Side have been announced. To be located at 403 East 79th Street, Extell Development Company...

 

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