The Chatham, located at 135 S 20th St, Philadelphia, PA 19103, is a high-rise, multi-family apartment building situated one block from Rittenhouse Square in Center City West. Built during an era known for craftsmanship, the property features a stone façade and period details. The building provides doorman services, controlled access, and shared laundry facilities. Apartment units include hardwood flooring, high ceilings, and updated finishes. The location offers proximity to cultural destinations, dining, and retail corridors, as well as convenient access to public transit via SEPTA rail and subway systems. Walkability and transit access in the area are rated among the highest in Philadelphia.