Is the sewer leaking upstairs or the property management?

Legal analysis: the property should be responsible.

Legal basis: Article 12 of the Measures for the Administration of Maintenance Funds for Facilities and Equipment in Residential Areas * * * * When a property management enterprise changes, it shall be transferred to the custody maintenance fund account after verification by the owners' committee. The account transfer formalities shall be sent to the local real estate administrative department and the owners' committee for the record within ten days from the date of signature and seal by both parties.

Before the establishment of the owners' committee, the use of the maintenance fund was proposed by the selling unit or the management unit entrusted by it, and was allocated after being audited by the local real estate administrative department. After the establishment of the owners' committee, the annual use plan of the maintenance fund is proposed by the property management enterprise and implemented after the approval of the owners' committee.