Ask a lawyer to answer, whose responsibility is it that the iron fence outside the building falls off and hits people?

For buildings and their components that exceed the developer's warranty period, the owner shall bear the responsibility of maintenance and warranty, and the general property management content does not include maintenance. So, you are the main responsible person. If the fence falls and causes casualties, this responsibility can only be borne by you. If you want to repair, you should take the initiative to contact the property or developer. They should bear the responsibility of maintaining or contacting other maintenance personnel, and the expenses should be borne by you.