Mahina Bay is a suburb which lies within the Territorial Authority of Lower Hutt, one of 38 residential suburbs which form the wider region. Mahina Bay is the 30th largest suburb of Lower Hutt in terms of the total number of residential housing stock. Mahina Bay 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 1960 - 1969. Residential housing stock in Mahina Bay is made up of approximately 92% residential housing , 3% residential investment housing and 5% lifestyle properties.