Any contract for the sale or exchange of residential property subject to the provisions of this division, including escrow contracts, shall not be invalidated as a result of the information furnished in said report unless it reveals a material misrepresentation or concealment by the owner or unless it reveals a material mistake by both owner and prospective buyer or transferee which would justify a rescission of the sale or exchange in the absence of this division. Should such report reveal such misrepresentation, concealment, or mistake, the sale or exchange may be rescinded or cancelled at the option of the buyer or transferee.