Porirua is a suburb which lies within the Territorial Authority of Porirua, one of 19 residential suburbs which form the wider region. Porirua is the 17th largest suburb of Porirua in terms of the total number of residential housing stock. Porirua provides a range of housing stock, with the earliest residential housing recorded in the area constructed between 1910 - 1919. The majority of the residential housing stock in the locality was constructed between 1910 - 1919. Residential housing stock in Porirua is made up of approximately 95% residential housing and 5% lifestyle properties.