The public housing maintenance fund refers to the maintenance fund for the public parts of residential buildings and public facilities and equipment. The principal is raised jointly by the selling unit and the buyer, and the ownership belongs to the payer. The interest is used for the repair and maintenance of the public parts of the sold residential building and the public facilities and equipment. When the interest is insufficient, shared by property owners.

The public maintenance fund for commercial housing is paid by the buyer when purchasing the house, and the proportion is 2% of the purchase price. The new standard method will be implemented from February 1, 2008.

Previously, Beijing paid 2% of the total housing price to the public housing maintenance fund. The updated standards are: 100 yuan per square meter for multi-story residential buildings and 200 yuan per square meter for high-rise buildings. The relevant person in charge of the Municipal Construction Committee said, "This is because the construction and installation costs of different residences are different."

The establishment of a maintenance fund is a guarantee mechanism to improve the maintenance of the most used parts of the house. Owners of residential properties, non-residential properties in residential communities, or non-residential properties structurally connected to a single residential building must pay special maintenance funds in accordance with national regulations. The maintenance fund is specially used for the maintenance, updating and transformation of residential parts, public equipment and public facilities in the property management area after the warranty period has expired. It is collected by the developer on behalf of the developer and supervised by the housing management department. The ownership belongs to the home buyer and cannot be used for other purposes.