79
Global
Height rank

Comcast Technology Center

Philadelphia
Height
1
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).

341.4 m / 1,120 ft
2
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."

339.1 m / 1,112 ft
3
Occupied:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.

267.1 m / 876 ft
1 2 3 Comcast Technology Center Outline
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).

59
Below Ground

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

2
Height 339.1 m / 1,112 ft
Floors 59
Official Name
The current legal building name.

Comcast Technology Center

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

Comcast 2.0, Comcast Innovation and Technology Center

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, 2018

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

United States

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

Philadelphia

Postal Code

19103

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.

hotel / office

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.

composite

Core
Reinforced Concrete
Columns
Steel
Floor Spanning
Steel
Energy Label

LEED Platinum

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."

339.1 m / 1,112 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).
341.4 m / 1,120 ft
Occupied
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
267.1 m / 876 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).

59

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

2

# of Hotel Rooms
Number of Hotel Rooms refers to the total number of hotel rooms contained within a particular building.

217

# of Parking Spaces
Number of Parking Spaces refers to the total number of car parking spaces contained within a particular building.

70

# of Elevators
Number of Elevators refers to the total number of elevator cars (not shafts) contained within a particular building (including public, private and freight elevators).

30

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.

123,560 m² / 1,329,989 ft²

Rankings
#
79
Tallest in the World
#
13
Tallest in North America
#
13
Tallest in United States
#
1
Tallest in Philadelphia
#
38
Tallest Mixed-use Building in the World
#
4
Tallest Mixed-use Building in North America
#
4
Tallest Mixed-use Building in United States
#
1
Tallest Mixed-use Building in Philadelphia
#
45
Tallest Composite Building in the World
#
4
Tallest Composite Building in North America
#
4
Tallest Composite Building in United States
#
1
Tallest Composite Building in Philadelphia
Construction Schedule
2013

Proposed

2014

Construction Start

2018

Completed

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.

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).

Façade Maintenance
Wind
Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

Cladding
Façade Maintenance Equipment
Owner
Liberty Property 18th & Arch L.P.; Comcast Corporation; Liberty Property Trust
Developer
Liberty Property 18th & Arch L.P.
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.

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.

Kendall / Heaton Associates
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.

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.

LF Driscoll
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).

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.

Vidaris, Inc.
Façade Maintenance
Interiors
Rottet Studio
Landscape
Olin Studio
LEED
Atelier Ten
Lighting
Tillotson Design Associates
Wind
Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

Cladding
Concrete
B. Pietrini & Sons
Façade Maintenance Equipment

CTBUH Awards & Distinctions

Best Tall Building 300-399 meters 2021 Award of Excellence

2021 CTBUH Awards

CTBUH Initiatives

CTBUH Releases Year in Review: Tall Trends of 2018

12 December 2018 - CTBUH News

2018 Tall Building Predictions

17 January 2018 - CTBUH News

Research

20 March 2020

Tall + Urban Innovation 2020: Dominant Trends

CTBUH Research

Providing a global overview of tall building development, design and construction, the CTBUH Awards Program and related Tall + Urban Innovation Conference annually survey projects,...

About Comcast Technology Center

Built as a companion structure to the Comcast Center, the Comcast Technology Center will soar above the city’s skyline as the tallest building in Philadelphia, upon completion. The centrally located site lies between the residential and social hub of Rittenhouse Square and the cultural district around Ben Franklin Parkway.

The mixed-use structure features a concrete central stepping core, a steel frame and deck, and a unitized curtain wall system with stainless steel screen cladding. The core is split, creating a visual axis through the building to Comcast Tower and a clear orientation spine. This central column is articulated at the top of the building with illuminated glass beams, which extend 38 meters above the tower, adding a dramatic presence to the skyline. The tower is vertically stepped, with state-of-the-art television studios for NBC at the base, and a 12-story hotel above. The modern offices have large, open floor plates that offer tenants a great deal of flexibility in terms of how to organize their space. The tower’s façades are adorned with a series of thirteen three-story sky gardens, which elegantly draw a continuous strand of vegetation through the building. Of special note, elevator services are built into the exterior at the corners of the building, flooding the glass elevator cabs with natural light and exposing them to views of the city.

With special consideration given to Philadelphia’s climate, the project is expected to achieve LEED Platinum certification. The scheme takes advantage of the city’s temperate spring, summer, and autumn to welcome as much daylight as possible, and incorporates a chilled beam system to help cool the interior. The building’s structure and podium shelter the outdoor spaces, protecting Comcast Plaza from harsh winter winds.

CTBUH Awards & Distinctions

Best Tall Building 300-399 meters 2021 Award of Excellence

2021 CTBUH Awards

20 March 2020

Tall + Urban Innovation 2020: Dominant Trends

CTBUH Research

Providing a global overview of tall building development, design and construction, the CTBUH Awards Program and related Tall + Urban Innovation Conference annually survey projects,...

25 April 2019

Tall Buildings in Numbers: World's Tallest Offset-Core Buildings

CTBUH Research

There has long been an interest in separating the service cores of tall buildings from the main programmed areas – to create more column-free, easily-configured...

12 December 2018

Year in Review: Tall Trends of 2018

CTBUH Research

The astronomical growth in tall building construction observed over the past decade continued in 2018, though the total number of completed buildings of 200 meters’...

12 December 2018

The astronomical growth in tall building construction observed over the past decade continued in 2018, though the total number of completed buildings of 200 meters’ or greater height leveled off at 143, after hitting an all-time record of 147 in 2017.

17 January 2018

2018 Tall Building Predictions

Check out all of our 2018 Tall Building Predictions, and dive into the full 2017 Tall Building Year in Review data report.

13 October 2016

The Council is pleased to announce the Top Company Rankings for numerous disciplines as derived from the list of projects appearing in 100 of the World’s Tallest Buildings.