(1) Where, after the commencement of this Act, an interest in any immovable property of an intestate, or in any business carried on by him or her, whether solely or in conjunction with others, devolves upon two or more heirs specified in class I of the Schedule, and any one of such heirs proposes to transfer his or her interest in the property or business, the other heirs shall have a preferential right to acquire the interest proposed to be transferred.