Housing leakage property rights exist in name only, regardless of developers. Which department should I go to complain?

First of all, you have to see whether the contract you signed with the property company indicates that the house maintenance is included in the property fee. If not, the water leakage problem belongs to the housing quality problem. For the housing quality problems during the warranty period, you should ask the property management company to contact the development unit for timely maintenance. If the public parts are waterproof after the warranty period, it is necessary to use maintenance funds.

In the second case, I don't understand what you mean by drain pipe. If the drainage pipe (for example, blocked) causes your house to leak rain, all the responsibilities shall be borne by the property management company. The reason is that the drainage pipe belongs to public facilities, and the property management company has the responsibility to maintain it and ensure its normal use. Blocking is mismanagement.

The department can find the local property management office, and it is recommended to consult the property manager for claim first. If not, go through legal procedures and pay attention to collecting evidence.

I hope it helps you.