Burnham is a suburb which lies within the Territorial Authority of Selwyn, one of 31 residential suburbs which form the wider region. Burnham is the 16th largest suburb of Selwyn in terms of the total number of residential housing stock. Burnham 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 1990 - 1999. Residential housing stock in Burnham is made up of approximately 9% residential housing and 91% lifestyle properties.