The Home Ownership Scheme (HOS) is a subsidized-sale programme of public housing in Hong Kong managed by the Hong Kong Housing Authority. It was instituted in the late 1970s as part of the government policy for public housing with two aims - to encourage better-off tenants of rental flats to vacate those flats for re-allocation to families in greater housing need; and also to provide an opportunity for home ownership to families unable to afford to buy in the private sector.