Ice fell into the property.

The responsibility lies with the private construction party, and the property has the responsibility of informing, persuading and reporting.

Buildings and structures built without permission should be demolished. If they are built in public areas without permission, it is even more undesirable. If the property informs, persuades and issues a rectification notice, and reports it to the relevant government departments, then the property will fulfill its obligations, and the property will not be responsible after problems occur. Private builders don't have to tear it down, but if there are any problems, especially in winter, and if pedestrians are hit, then private builders will be responsible.