This Law regulates the ownership, development, management, operation, and use of housing; housing transactions; and state management of housing in Vietnam, except as provided for in Clause 2 of this Article. Transactions involving the sale, lease-purchase, and lease of commercial housing by enterprises, cooperatives, and cooperative unions engaged in real estate business, as well as transactions involving the transfer of housing purchase contracts, shall be carried out in accordance with the provisions of the law on real estate business.