Legal analysis: the property should be responsible for the rain leakage on the top floor, and you can apply for a maintenance fund to repair the rain leakage area. If the owner is at fault for leaking rain on the top floor, he shall bear the responsibility within the fault range.

Legal basis. Article 20 of the Regulations on the Administration of Adjoining Houses with Different Properties in Cities shall be shared according to the following provisions: (1) The cost of maintenance, renewal and transformation of residential buildings or commercial buildings and non-residential buildings shall be shared by the relevant owners in proportion to the construction area of their respective properties.