As used in this article, the term:

(1) "Authority" means the Georgia Building Authority.

(2) "State" means the State of Georgia and any of its offices, agencies, authorities, departments, commissions, boards, divisions, instrumentalities, and institutions but does not include counties, municipalities, school districts, other units of local government, hospital authorities, or housing and other local authorities.

(3) "State building" means a building owned by the state or under the custody or control of the state or insured by the program of self-insurance established under Code Sections 50-16-8 through 50-16-11.

(4) "State entity" means either of the entities listed in paragraph (2) of this subsection.