Comcast Building

Click an image to view larger version.
Height: Occupied
252.4 m / 828 ft
Height: Architectural
259.1 m / 850 ft
Comcast Building Outline
Height: Observatory
256 m / 840 ft
Floors Above Ground
# of Elevators
Top Elevator Speed
7.1 m/s
Tower GFA
195,095 m² / 2,099,985 ft²


Official Name Comcast Building
Name of Complex Rockefeller Center
Other Names 30 Rockefeller Plaza, 30 Rock, The Slab, GE Building, RCA Building
Structure Type Building
Status Completed
Country United States
City New York City
Street Address & Map 30 Rockefeller Plaza
Postal Code 10112
Building Function office
Structural Material steel
Construction Start 1931
Completion 1933
Rankings Click arrows to view the next taller/shorter buildings
Global Ranking #416 Tallest in the World
Regional Ranking #63 Tallest in North America
National Ranking #56 Tallest in United States
City Ranking #24 Tallest in New York City

Original Companies Involved

• (not specified) Tishman Speyer Properties
Developer The Rockefeller Group
Design Corbett, Harrison & MacMurray; Raymond Hood; Reinhard & Hofmeister
Structural Engineer
Design Edwards & Hjorth; H.G. Balcom & Associates
Material Supplier
• Elevator Schindler
• Fire Proofing Grace Construction Products

Retrofit Companies Involved

Other Consultant
• Roofing Vidaris, Inc.

About Comcast Building

30 Rockefeller Center is an American Art Deco skyscraper that forms the centerpiece of Rockefeller Center in Manhattan. The observation deck on 30 Rockefeller Center is built to resemble the deck of an ocean liner offering one of the best panoramic city views. It is the longtime home to NBC Studios originating as radio studios and since be converted to television studios.

CTBUH Initiatives

Rockefeller Center Historical Building and Urban Habitat Tour
28 Oct 2015 – Tour Report

Panel Handles Mean, Green Questions at Architect @ Work in China
3 Jul 2015 – Event Report

New York Conference Inaugural Steering Committee Meeting
17-21 Nov 2014 – Event Report


CTBUH Video Interview – James Parakh
18 Oct 2016 – James Parakh, City of Toronto Planning Department

The Space Between: Urban Spaces Surrounding Tall Buildings
18 Oct 2016 – James Parakh, City of Toronto Planning Department

Urban Density and the Porous High Rise: The Integration of the Tall Building in the City
18 Sep 2014 – James von Klemperer, Kohn Pedersen Fox Associates PC

To submit more information or donate images for this project, please use our submission portal.