Mairehau is a suburb which lies within the Territorial Authority of Christchurch, one of 116 residential suburbs which form the wider region. Mairehau is the 13rd largest suburb of Christchurch in terms of the total number of residential housing stock. Mairehau 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 1950 - 1959. Residential housing stock in Mairehau is made up of approximately 98% residential housing , 1% residential investment housing and 1% lifestyle properties.