1. The newly bought house is leaking, so you should usually look for the property department first. Because the property department is generally entrusted by the developer to contact the maintenance affairs, the property department (entrusted by the developer) should contact the construction unit for warranty. The developer has a contract with the construction unit, and the developer has the warranty of the construction unit, so as long as it is not the cause of abnormal use, the construction unit must guarantee the "house leakage".

2。 Because there is only a contract and warranty relationship with the developer, you can directly find the developer (or find the representative of the property department or construction unit entrusted by the developer).

3。 It is protected by contract terms and consumer rights law. Property departments and developers can complain whether they want to find the local "construction quality supervision station" or the local "consumer association".

4。 At the end of the warranty period, you can find the property department for maintenance. If it is not the reason for use, it is not necessary to pay (from the housing maintenance fund, it has been paid by property buyers and developers).

5。 Repair method: chisel out the leakage part of the external wall from the outside and fill it with cement mortar with cement content of 1: 2 and 15% alunite expansion agent.