Legal analysis: law. Commercial housing owners need to deposit maintenance funds into the special housing maintenance fund account before handling the house occupancy formalities. This is to ensure the later maintenance of the house and ensure that the owner can live safely. Therefore, it is legal to pay the maintenance fund before handing over the house. Commercial housing with non-single property right, non-residential housing in residential quarters and non-residential housing connected with housing structure shall be paid by the owners according to the standard of 1 yuan per square meter of their own houses to 20 yuan. Single-property detached houses in residential areas shall be paid by the owners according to the standard from 20 yuan to 80 yuan per square meter. In the garage connected with the building structure, the owner's exclusive parking spaces obtained through legal transfer shall be deposited by the owner in the parking spaces used by all owners according to the standard of 3,000 yuan to 5,000 yuan per parking space, and the deposit shall not be counted separately. For houses with elevators, the construction unit shall pay the maintenance funds owned by the owners in one lump sum according to the standard of exclusive area per square meter owned by the owners.

Legal basis: Measures for the Administration of Special Maintenance Funds for Residential Buildings Article 12 The owner of commercial housing shall deposit the first special maintenance fund for residential buildings into the special account for special maintenance funds for residential buildings before going through the house occupancy formalities. The owner of the sold public housing shall deposit the first special maintenance fund of public housing into the special maintenance fund account of public housing or hand it over to the selling unit for deposit into the special maintenance fund account of public housing before going through the housing check-in formalities. Units selling public housing houses shall deposit the extracted special maintenance funds for public housing houses into the special account of special maintenance funds for public housing houses within 30 days from the date of receiving the payment for selling houses.

3. All floors and call button boxes (external calls) in halls and stations should be replaced. Floor indicator: replace all lighting circuits on all floors, all cabinets and instruments in high-voltage cabinets, repair and replace circuit breakers, disconnectors, load switch operating mechanisms, transformer fuses, lightning arrester grounding switches, handcart and mechanical locks, replace insulating oil for cooling fans, control boxes and cabinet temperature indicators, and repair and replace windings, insulating oil pillows and heat sinks.

So in the process of buying a house, you need to pay a lot of expenses, including the maintenance fund of the house. Among them, commercial housing with non-single property rights shall be paid to 20 yuan according to its own exclusive housing area of one yuan per square meter, and this housing maintenance fund shall be paid before delivery.