9.1. This Division applies to any contract made between a natural person and a broker, lawyer or notary under which the latter agrees to act as an agent for the sale, rental or exchange of:(1) part or all of a chiefly residential immovable of less than five dwellings;
(2) a fraction of a chiefly residential immovable subject to a declaration of co-ownership covered by articles 441b to 442p of the Civil Code of Lower Canada.