For the purpose of section 41-724 [41-721], Idaho Code, “improved real property” means:
(1) Farmland used for tillage, crop or pasture;
(2) Real estate on which improvements, or improvements under construction or in process of construction, suitable for residence, institutional, commercial or industrial use, are situated; and
(3) Real estate to be developed for the use or uses set forth in subsection (2) of this section on which durable structural improvements, or durable structural improvements under construction or in process of construction, including but not limited to streets, sidewalks, sewers, and utilities which will become an integral part of such development, are situated or abut.