Sumner is a suburb which lies within the Territorial Authority of Christchurch, one of 116 residential suburbs which form the wider region. Sumner is the 47th largest suburb of Christchurch in terms of the total number of residential housing stock. Sumner provides a range of housing stock, with the earliest residential housing recorded in the area constructed between 1890 - 1899. The majority of the residential housing stock in the locality was constructed between 1990 - 1999. Residential housing stock in Sumner is made up of approximately 98% residential housing and 2% residential investment housing properties.