Is the maintenance of long hair and mildew on the interior wall of the house the scope of work of the property?

No, please remember that the property is not responsible for everything in your home. This belongs to the exclusive part of the owner. During the warranty period, both the developer and the construction unit are responsible. Outside the warranty period, you can only bear it yourself.

But you can ask the property engineering department to go to your home to help find out what caused it.

Usually it's either the window or the wall. The wall belongs to the general contractor and the window belongs to the door and window construction unit.

If you can provide evidence that this problem occurred before the insurance and has been repaired. Then you can also find the construction unit for maintenance after insurance.

You can find a property company to help communicate, or you can directly find the developer's customer service after sales.