This chapter does not apply to:
(1) the sale, lease, or rental of real estate by an unlicensed owner of real estate who owns any interest in the real estate if the interest being sold, leased, or rented is identical to the owner's legal interest;
(2) an attorney at law acting within the scope of his duties involved in the legal representation of a client/owner;
(3) agencies and instrumentalities of the state or federal government and their employees acting within the scope of their official duties;
(4) foresters registered under Chapter 27, Title 48, if the sale of any land is merely incidental to the sale of timber on the land; or
(5) court-appointed receivers and trustees while acting within the scope of their appointment.