strategies for increasing the number of smaller housing units can include zoning accessory dwelling units which can be used to increase the supply of small units one such example is manchester s urban cohousing project which supports a residentled group for independent flats and communal spaces for older people a housing relocation system to match housing demand with household size can help satisfy the housing needs of both generations older people living in large houses earn income by renting their houses to younger families with children and moving to accommodation more suitable to later life the japan transhousing institute jti helps to connect house owners over years old with families with young children who are looking for rental accommodation japan transhousing institute