Maintenance fund invoices are issued by the local housing authority, and maintenance funds are sometimes collected by developers or paid by the housing authority. The housing maintenance fund is used for large and medium-sized repair and renovation projects of the main structure, public parts and public facilities and equipment of the house after the warranty period expires. Maintenance costs are paid by all owners and belong to all owners.

The maintenance fund is managed by the Housing Authority, and the application process is complicated. It is mainly used for the overhaul and reconstruction of the main load-bearing structure of the house and public facilities and equipment, in which the public parts refer to outdoor walls, hallways, staircases, corridors, etc. Public facilities and equipment refer to elevators, public lighting, fire fighting facilities, green spaces, roads, etc. Houses and related supporting areas.