The housing maintenance fund is valid for five days, and it is valid for five natural days from the date of issuance.

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.