The12 office property is a five-storey building which, in addition to around 3,900 sqm of office space, also includes around 900 sqm of retail space and additional storage space. The three largest tenants, who together use around 60 percent of the rental space, are a law firm, the Finnish Ministry of Justice and the software company Vainu.

The12 office property with the address Eteläesplanadi 12 is located at the well-known Esplanadi Park in the centre of Helsinki. The main railway station of the Finnish capital is about 700 meters away from the building and the central pedestrian zone of Helsinki is within walking distance.