One City apartments in Philadelphia, PA
One City, by BLTa 2
One City, by BLTa
One City, by BLTa 1
One City, by BLTa 3
One City, by BLTa 4

One City

Philadelphia, PA, USA

Formerly known as the United Gas Improvement Company Building, this historic office building has been transformed as a multi-family residence.

This historic office building is a newly adapted multi-family residence that houses 323 apartments, mostly studios, targeting young professionals. Residents enjoy amenities in the ground floor club room, a grand room with historic high ceilings, and views from the rooftop lounge and outdoor deck overlooking City Hall and the Thomas Paine Plaza. Both Arch and Broad streets will host new retail spaces to enliven the building’s streetscape.

This project was completed by BLTa prior to becoming a Perkins Eastman Studio.

Project Facts

  • Client:

  • Alterra Properties
  • Size:

  • 221,500 sf | 20,577 sm
  • Markets:

  • Renovation + Historic Buildings, Residential
  • Region:

  • United States
  • Studios:

  • Philadelphia


  • 2021 Preservation Alliance Grand Jury Award