Legal analysis: the housing maintenance fund should be renewed when it is used up. If the balance of the special maintenance fund of the owner's sub-ledger is less than 30% of the initial deposit, it shall be renewed in time. If the owners' meeting is established, the renewal plan shall be decided by the owners' meeting. If the owners' meeting is not established, the specific management measures for renewing the lease shall be formulated by the local authorities. When selling commercial housing, the purchaser and the selling unit shall sign the relevant housing maintenance fund payment agreement, and the purchaser shall pay the housing maintenance fund to the selling unit according to the proportion of 2% to 3% of the purchase price. The maintenance fund collected by the selling unit belongs to all owners and is not included in the residential sales income. The current deposit standard of the first special maintenance fund is: 90 yuan per square meter for high-rise buildings with elevators and 50 yuan per square meter for multi-storey buildings with villas.

Legal basis: Article 17 of the Measures for the Administration of Residential Special Maintenance Funds. If the balance of residential special maintenance funds in the owner's account is less than 30% of the first deposit amount, it shall be renewed in time. If the owners' meeting is established, the renewal plan shall be decided by the owners' meeting. If the owners' meeting is not established, the specific management measures for renewal shall be formulated by the construction (real estate) department of the people's government of the municipality directly under the central government, the city and the county jointly with the finance department at the same level.