Sec. 21.041.  EVIDENCE.  As the basis for assessing actual damages to a property owner from a condemnation, the special commissioners shall admit evidence on:
(1)  the value of the property being condemned;
(2)  the injury to the property owner;
(3)  the benefit to the property owner's remaining property;  and
(4)  the use of the property for the purpose of the condemnation.
Acts 1983, 68th Leg., p. 3504, ch. 576, Sec. 1, eff. Jan. 1, 1984.