Supporting houses refer to supporting houses used to provide service facilities in public areas. Mainly to serve all residents in the area, it is generally used to do community services, such as medical and health facilities or community recreational facilities, as well as commercial service facilities, etc. Simply understood, it is the type of special-purpose housing that matches the housing. For example, the common basements, garages, and distribution rooms in the community are all supporting houses used to serve the residents' lives. The property right of supporting houses is generally about 41 years, and supporting houses cannot be sold separately. Although there is a real estate license, they can also be listed and traded, and there is no special arrangement for the use of houses. Under the requirements of the policy, supporting houses can also be used for catering or cultural entertainment. The use of the house can be arranged by the owner or others in the form of renting or selling. At present, the public housing has been included as a supporting project in the project of building or rebuilding residential quarters.