When buying a house, you must pay the house maintenance fund. According to the provisions of the first and second paragraphs of Article 12 of the Measures for the Administration of Residential Special Maintenance Funds, commercial housing owners should deposit the first phase of residential special maintenance funds into the special account of residential special maintenance funds before handling the house occupancy procedures. 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. Article 13 stipulates that the development and construction unit or the public housing sale unit shall not deliver the house to the purchaser if the first special maintenance fund of the house is not deposited in accordance with the provisions of these measures. Article 12 (1) and (2) of the Measures for the Administration of Residential Special Maintenance Funds, commercial housing owners shall deposit the first phase of residential special maintenance funds into the special account of residential special maintenance funds before handling the house check-in procedures. 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. Thirteenth not according to the provisions of the deposit of the first residential special maintenance funds, development and construction units or public housing units shall not be delivered to the buyer.