The ground has subsided by more than ten square meters. Is the property to be maintained?

It definitely belongs to the property management in the management area, but it depends on who will pay the maintenance fee. If it is the ground subsidence of the new community, you can find the developer. If it is an old community, it depends on what causes the settlement and find the responsible party. For example, the settlement caused by subway construction can be found by subway development and construction units. If it is a natural settlement, the old community can only find the owner and pay the maintenance fee from the maintenance fund.