As used in this chapter, unless the context otherwise requires:
(1) “Commission” means the state building commission;
(2) “Improvement to real property” means: The construction or erection of new buildings or structures in which the state of Tennessee or any of its departments, institutions or agencies have an interest, whether financed by public or private funds or both;
(3) The major maintenance of any building or structure in which the state of Tennessee or any of its departments, institutions or agencies have an interest; or
(4) The renovation of any building or structure in which the state of Tennessee or any of its departments, institutions or agencies have an interest;
(5) “Major maintenance” means the repair or renovation of any building or structure or any portion thereof in which the state of Tennessee or any of its departments, institutions or agencies have an interest and that is being funded by direct appropriations for major maintenance or that will cost in excess of one hundred thousand dollars ($100,000); and
(6) “Renovation” means the change in the functional use or operation of space in existing buildings or structures in which the state of Tennessee or any of its departments, institutions or agencies have an interest.