The station has two entrances, one at the west via a domed building dating from the 1920s, and one at the east via a modern curved-steel and glass pavilion.

Clapham Common is one of two remaining deep-level stations on the underground that has an island platform in tunnel serving both the northbound and southbound lines, the other being Clapham North.

Clapham Common is one of eight London Underground stations that have a deep-level air-raid shelter underneath them.
Both entrances to the shelter are north of the station on Clapham High Street.
The station has two entrances, one at the west via a domed building dating from the 1920s, and one at the east via a modern curved-steel and glass pavilion.
Clapham Common is one of two remaining deep-level stations on the underground that has an island platform in tunnel serving both the northbound and southbound lines, the other being Clapham North.
Clapham Common is one of eight London Underground stations that have a deep-level air-raid shelter underneath them. Both entrances to the shelter are north of the station on Clapham High Street.
Clapham Common tube station