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456
Global
Height rank
Height rank
56 Leonard
New York City
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Metrics
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Height
250.2 m / 821 ft
Floors
57
Official Name
The current legal building name.
56 Leonard
Type
CTBUH 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 CTBUH '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, 2016
Country
The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.
City
The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.
Address
Postal Code
10013
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 CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.
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 CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.
residential
Structural Material
Steel
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered a “steel” structure as the concrete elements are not acting as the primary structure.
Reinforced Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars.
Precast Concrete
Both the main vertical/lateral structural elements and the floor spanning system are constructed from steel reinforced concrete which has been precast as individual components and assembled together on-site.
Mixed-Structure
Utilizes distinct systems (e.g. steel, concrete, timber), one on top of the other. For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system, with the opposite true of concrete/steel.
Composite
A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used in a composite building’s core, columns, and floor spanning separately.
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered a “steel” structure as the concrete elements are not acting as the primary structure.
Reinforced Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars.
Precast Concrete
Both the main vertical/lateral structural elements and the floor spanning system are constructed from steel reinforced concrete which has been precast as individual components and assembled together on-site.
Mixed-Structure
Utilizes distinct systems (e.g. steel, concrete, timber), one on top of the other. For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system, with the opposite true of concrete/steel.
Composite
A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used in a composite building’s core, columns, and floor spanning separately.
concrete
Official Website
Height
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 Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."
250.2 m / 821 ft
To Tip
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).
250.2 m / 821 ft
Occupied
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
242.6 m / 796 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: CTBUH 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).
57
Floors Below Ground
The number of floors below ground should include all major floors located below the ground floor level.
1
# of Apartments
Number of Apartments refers to the total number of residential units (including both rental units and condominiums) contained within a particular building.
146
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.
46,452 m² / 500,005 ft²
Rankings
-
By function
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By material
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#
456
Tallest in the World
#
69
Tallest in
North America
#
24
Tallest in
New York City
#
84
Tallest Residential Building in the World
#
12
Tallest Residential Building in
North America
#
10
Tallest Residential Building in
United States
#
8
Tallest Residential Building in
New York City
#
202
Tallest Concrete Building in the World
#
27
Tallest Concrete Building in
North America
#
22
Tallest Concrete Building in
United States
#
10
Tallest Concrete Building in
New York City
Construction Schedule
2008
Construction Start
2016
Completed
Structural Engineer
Design
The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
MEP Engineer
Design
The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
Other Consultant
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Civil
Damping
Environmental
Façade
These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.
Geotechnical
Security
Wind
Material Supplier
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Elevator
You must be a CTBUH Member to view this resource.
Owner/Developer
Alexico Group
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.
Herzog & de Meuron Architekten
Architect of Record
Usually takes on the balance of the architectural effort not executed by the "Design Architect," typically responsible for the construction documents, conforming to local codes, etc. May often be referred to as "Executive," "Associate," or "Local" Architect, however, for consistency CTBUH uses the term "Architect of Record" exclusively.
Costas Kondylis Design
Structural Engineer
Design
The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
MEP Engineer
Design
The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
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.
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.
Lendlease Corporation
Other Consultant
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Civil
Damping
Environmental
Façade
These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.
Geotechnical
Roofing
Vidaris, Inc.
Security
Wind
Material Supplier
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Elevator
CTBUH Awards & Distinctions
Construction Award 2018 Award of Excellence
2018 CTBUH Awards
CTBUH Initiatives
CTBUH Study Examines Tallest Buildings with Dampers
22 August 2018 - CTBUH Research
56 Leonard Street Construction Tour
28 October 2015 - Event
Videos
31 May 2018 | New York City
Constructing the ‘Jenga’ Building Was No Game
56 Leonard has been called the “Jenga” building due to its cantilevered floors, as well as the irregular spacing and location of the balconies throughout...
Research
26 October 2015
The Fifth Façade: Designing Nature into the City
Rick Cook & Jared Gilbert, COOKFOX Architects
New York’s most iconic buildings, the early 20th-Century high rises, were designed as aspirational symbols of urban life with carefully sculpted forms that mediate between...
About 56 Leonard
56 Leonard Street has a Jenga-like design with cantilevering floor slabs. Pritzker Prize-winning Swiss architecture firm Herzog & de Meuron describes the building as "houses stacked in the sky" wanting to destroy the common anonymous extrusion of a glass tower. Residences have window walls up to 14 feet and private outdoor spaces to reveal views of the cityscape.
CTBUH Awards & Distinctions
Construction Award 2018 Award of Excellence
2018 CTBUH Awards
Videos
31 May 2018 | New York City
Constructing the ‘Jenga’ Building Was No Game
56 Leonard has been called the “Jenga” building due to its cantilevered floors, as well as the irregular spacing and location of the balconies throughout...
26 October 2015 | New York City
The Fifth Façade: Designing Nature into the City
New York’s most iconic buildings, the early 20th-Century high rises, were designed as aspirational symbols of urban life with carefully sculpted forms that mediate between...
18 September 2014 | New York City
2014 Shanghai International Conference - Closing Plenary - Q & A
2014 Shanghai International Conference Closing Plenary Questions & Answers session with speakers David Malott, CTBUH Chairman-Elect / Kohn Pedersen Fox Associates, David Gianotten of OMA,...
16 September 2014 | New York City
Sustainability and High-Rise Buildings – 56 Leonard Street
56 Leonard, a new 57-story residential development, totaling 480,000 GSF rises 825 feet from street level. At about 78’ in width, the slenderness ratio is...
Research
26 October 2015
The Fifth Façade: Designing Nature into the City
New York’s most iconic buildings, the early 20th-Century high rises, were designed as aspirational symbols of urban life with carefully sculpted forms that mediate between...
22 October 2015
New York: The Ultimate Skyscraper Laboratory
A timeline of skyscraper completions in New York uncannily resembles the boom and bust cycles of the United States in the 20th and early 21st...
MarshallGerometta.jpg)
22 October 2015
Perspectives on the Skyscraper City
To commemorate the CTBUH 2015 International Conference, some of the most prominent voices in the New York tall building industry today – all of whom...
16 September 2014
Sustainability and High-Rise Buildings – 56 Leonard Street
56 Leonard, a new 57-story residential development, totaling 480,000 GSF rises 825 feet from street level. At about 78’ in width, the slenderness ratio is...
14 September 2014
Towards Sustainable Vertical Urbanism
The survival of humanity on this planet relies on a radical repositioning of our cities. In the face of unprecedented global population growth, urbanization, pollution...
CTBUH Initiatives
Filter by
22 August 2018
CTBUH Study Examines Tallest Buildings with Dampers
CTBUH has released a Tall Buildings in Numbers (TBIN) interactive data study on the world's tallest buildings with dampers.
28 October 2015
56 Leonard Street Construction Tour
CTBUH 2015 delegates toured around the construction of 56 Leonard Street, which is set to be one of the top luxury residential towers in downtown Manhattan.
16 September 2014
Building Movement and Damping Workshop, Shanghai 2014
The Building Movement and Damping Technical Workshop reviewed some of the latest strategies and concepts for helping tall buildings avoid movement in seismic and wind events.
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