Housing overhaul fund is also called the Housing Maintenance Fund. Housing maintenance fund refers to the fund set up after the sale of commercial housing and public housing, which is specially used for the overhaul, renewal and transformation of residential parts and facilities after the warranty period expires. The full name of the house maintenance fund is * * * used parts and * * * used facilities and equipment maintenance fund, which is specially used for the maintenance and update of * * * used parts and facilities and equipment such as roofs and elevators after the warranty period expires. The maintenance fund can be said to be the "pension" of the house in terms of the maintenance guarantee of the parts and facilities used by * *. Overhaul fund is generally 2%-3% of the purchase price. Generally speaking, when the buyers get the keys to check in, the developers will collect the housing maintenance funds. Housing maintenance fund refers to the fund set up after the sale of commercial housing and public housing, which is specially used for the overhaul, renewal and transformation of residential parts and facilities after the warranty period expires. The full name of the house maintenance fund is * * * used parts and * * * used facilities and equipment maintenance fund, which is specially used for the maintenance and update of * * * used parts and facilities and equipment such as roofs and elevators after the warranty period expires. The maintenance fund can be said to be the "pension" of the house in terms of the maintenance guarantee of the parts and facilities used by * *. Overhaul fund is generally 2%-3% of the purchase price. Generally speaking, when the buyers get the keys to check in, the developers will collect the housing maintenance funds.