Maintenance funds are calculated according to the construction area. Among them, the house without elevator shall be deposited by the owner according to 35 yuan/㎡; Houses with elevators shall be paid according to 65 yuan/㎡. After the maintenance fund is used, if the book balance is lower than 30% of the first deposit amount, the owner shall renew it, and the amount shall not be lower than the standard for the first deposit of the owner. For second-hand houses, owners can negotiate with buyers. Second-hand housing owners can postpone the payment of the housing maintenance funds they have paid to the buyers for free, or they can charge a certain percentage of fees, but they can't exceed the amount paid at that time. The Measures for the Administration of Housing Special Maintenance Funds stipulates that maintenance funds shall be paid before the contract is filed. After obtaining the pre-sale certificate, the developer should register the information of the community and building at the maintenance fund window of the Housing Authority in time. The owner shall deposit the maintenance fund within 30 days after signing the commercial housing sales contract. If the developer is entrusted to pay for it, the developer shall deposit the maintenance funds into a special account within 30 days after receiving the maintenance funds.

Legal objectivity:

"Property Management Regulations" Article 53 The owners of residential properties, non-residential properties in residential quarters or non-residential properties connected with a single residential building structure shall pay special maintenance funds in accordance with the relevant provisions of the state. Special maintenance funds shall be owned by the owners, and shall be used exclusively for the maintenance, renewal and transformation of property parts and facilities after the expiration of the property warranty period, and shall not be used for other purposes. Measures for the collection, use and management of special maintenance funds shall be formulated by the construction administrative department of the State Council in conjunction with the finance department of the State Council.