When it rains, the wall of my balcony will seep. Is the residential property responsible for maintenance? urgent

The responsibility of external wall seepage should be borne by the developer. The property is not responsible. But if you report to the property, the property should come forward to help you contact the developer. However, the exterior wall also has a shelf life. If you decorate the exterior wall yourself, the exterior wall is waterproof for five years. Five years later, it depends on the conscience of the developer. No matter how to pursue it, the responsibility is not borne by the property.