The skyscraper has of rentable space, including of restaurant and retail space called The Market at the Comcast Center. of retail space is on the underground concourse while the rest is located on the street level. The building features high ceilings with some floors having a ceiling height of . The lower floors on the south side of the building feature four three-story stacked atrias. The building also features a 500-seat concourse level dining court and an 87-space private underground parking garage. ThyssenKrupp provided the building's 30 gearless elevators, seven hydraulic elevators, and two escalators.