Titahi Bay is a suburb which lies within the Territorial Authority of Porirua, one of 19 residential suburbs which form the wider region. Titahi Bay is the 2nd largest suburb of Porirua in terms of the total number of residential housing stock. Titahi Bay provides a range of housing stock, with the earliest residential housing recorded in the area constructed between 1880 - 1889. The majority of the residential housing stock in the locality was constructed between 1950 - 1959. Residential housing stock in Titahi Bay is made up of approximately 96% residential housing and 4% residential investment housing properties.