Philadelphia

United States

Facts

Population

5,441,567 (2010)

Area

1,800 km² • 695 mi²

Density

3,023.1 people per km²

7,829.8 people per mi²

First 150m+ Building

Philadelphia City Hall (1901)

Tallest Building

Comcast Technology Center (339 m)

Rankings

by no. of 150m+ completed buildings

Tallest City in

the World

Tallest City in

North America

Tallest City in

United States

Buildings

RANK	Name	Height
1	Comcast Technology Center	339.1 m / 1,112 ft
2	Comcast Center	296.7 m / 974 ft
3	One Liberty Place	288 m / 945 ft
4	Two Liberty Place	258.5 m / 848 ft
5	BNY Mellon Bank Center	241.4 m / 792 ft
6	Three Logan	225.3 m / 739 ft
7	FMC Tower at Cira Centre South	222.5 m / 730 ft
8	G. Fred DiBona Jr. Building	190.5 m / 625 ft
9	The W Philadelphia and Element Philadelphia	188 m / 617 ft
10	The Laurel	182.6 m / 599 ft

Building Completions Timeline

Philadelphia CTBUH Members

Name	Level	# of 150m+ buildings	Fields Of Expertise ACAD: Academic / University ARCH: Architecture BACS: Building Automation Control Systems BMNT: Building Maintenance CIV: Civil Engineering COMP: Computers / IT / Software CON: Construction / Contractor COST: Cost Consulting DEV: Developer ENGO: Engineering, Other ENVE: Environmental Engineering ENVP: Environmental Protection FAC: Façade Design / Engineering FIN: Financial Industry FIRE: Fire Engineering GEO: Geotechnic / Foundations HIST: Historical Preservation INSU: Insurance / Risk INTR: Interior Design LAND: Landscape Architecture LEGL: Legal MRKT: Marketing / Sales MATR: Materials / Products / Systems Supplier MEP: Mechanical, Electrical & Plumbing NONP: Non-Profit Org. / Assoc. / Gov't OWN: Owner (Buildings, Land) PMNG: Project Management PROP: Property Management RES: Research Institute SEC: Security Consultancy SEIS: Seismic Design STRC: Structural Engineering SURV: Surveying TRAN: Transportation / Urban Infrastructure URB: Urban Design VERC: Vertical Transportation Consultant WIND: Wind Engineering OTHR: Other FACS: Façade Systems VERS: Vertical Transportation Supplier ENGM: Engineering, Multi-discipline
Thomas Jefferson University	Nonprofit/Governmental	0	ACAD
University of Pennsylvania	Nonprofit/Governmental	0	ACAD
Langan	Platinum	102	CIV • LAND • ENVE • ENGM • GEO • SEIS • SURV
RWDI	Platinum	515	WIND • ENVE • ENGO
Thornton Tomasetti, Inc.	Platinum	233	CIV • STRC • URB • ARCH • ENVE • PMNG • COMP • ENGM • ENGO • FAC • FACS • FIRE • GEO • HIST • INSU • MEP • SEC • SEIS • TRAN
IMEG Corp	Gold	4	ENGM
Alderson Engineering, LLC.	Silver	2	ENGM
BALA Engineers	Silver	12	ENGO
National Real Estate Development	Silver	1	DEV
O'Donnell & Naccarato	Silver	1	STRC

CTBUH People & Events

Chair

Kirk Harman

IMEG Corp

CTBUH Philadelphia Presents: Creating a Campus within the Urban Habitat

24 April 2024

Join us for a keynote presentation by Pete Cramer…

CTBUH Philadelphia Presents: Greening High-Density Cities

26 February 2024

Join the CTBUH Philadelphia Chapter for a keynote…

Videos

16 February 2021

Building Tall and Going Deep: What It Takes to Support Tall Buildings in the San Francisco Bay Area

Have you ever looked into the sky and wondered, “What does it take to support a tall building?” Perhaps you may have even grown more...

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Research

22 August 2022

The World’s Highest Pools: A Deep Dive

Tall building design has diversified and adapted to accommodate increased demand for distinctive amenities at a range of heights. Swimming pools are a classic feature...

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Global News

19 March 2025

Philadelphia’s Children’s Hospital Receives $125 Million for New Inpatient Tower

Children’s Hospital of Philadelphia (CHOP) has received a 125 million USD donation from Aileen K. and Brian Roberts and their family to support the construction...

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