Maintenance fund, also known as "public maintenance fund" and "residential special maintenance fund", means that the owners of residential properties pay a certain amount of money to a special account for the maintenance of common parts and shared facilities and equipment in the property area.

Housing maintenance fund actually includes housing public facilities special fund and housing maintenance fund. The special fund for housing public facilities is referred to as the special fund, which is used for projects such as the renovation of common parts of property and public facilities and equipment, and shall not be used for other purposes. Special funds to implement the principle of "money with the house". When the house is transferred, the remaining funds in the account are also transferred to the new owner of the house.