When the owner sells his property, what costs does he still need to pay?

In case of a sale of the property, the owner has to take care that he has covered several things, like the monthly payments approved by the General Assembly in the budget until the date of the sale, the final balance of the expense report approved by the General Assembly (if the date falls after the date of the sale), all calls for funds made by the building manager before the sale, and all works decided by the General Assembly if the call for funds was noted in the minutes of the meeting. However, the works decided by the General Assembly, without a call for funds or invoices before the sale are to be paid by the new owner.