Excuse me, are you sure that your boyfriend's original land has a title certificate? Land belongs to the state, and individuals are not allowed to buy or sell it. The methods of transferring state-owned land include bidding, auction and transfer. If there is a house on the original land and it is later demolished, is there a title certificate? If not, it is illegal construction. Developers can buy land from the state and demolish local buildings unconditionally. In this way, the property you are talking about is a relocated house, and there is no possibility of selling land. The developer can use his land for construction.
If you still don't understand, please come to our group to ask about real estate: 16 162 1830.