Southbridge is a suburb which lies within the Territorial Authority of Selwyn, one of 31 residential suburbs which form the wider region. Southbridge is the 7th largest suburb of Selwyn in terms of the total number of residential housing stock. Southbridge provides a range of housing stock, with the earliest residential housing recorded in the area constructed between 1900 - 1909. The majority of the residential housing stock in the locality was constructed between 2000 - 2009. Residential housing stock in Southbridge is made up of approximately 73% residential housing , 1% residential investment housing and 27% lifestyle properties.