The station concourse and ticket machines are located on the second basement ("B2F") level.

The station has one island platform located on the 4th basement ("B4F") level, serving two tracks.

Roppongi-itchome Station opened on 26 September 2000 on the Namboku line.

[1] The station facilities were inherited by Tokyo Metro after the privatization of the Teito Rapid Transit Authority (TRTA) in 2004.

[1] The main station exit is connected directly to basement levels of the Izumi Garden Tower building.