The following terms, wherever used or referred to in this article, have the following meaning:
(a) "Approved modifications or construction of courthouse facilities" means any modification or construction of a courthouse facility which has been recommended for assistance by the authority according to the requirements of section four of this article;
(b) "Authority" means the West Virginia courthouse facilities improvement authority;
(c) "Cost" means the cost of construction, renovation, repair and safety upgrading of courthouse facilities; the cost of land, equipment, machinery, furnishings, installation of utilities and other similar items convenient in connection with placing a courthouse facility in operation; and the cost of financing, interest during construction, professional service fees and all other charges or expenses necessary, appurtenant or incidental to the modification or construction of a courthouse facility; and
(d) "Courthouse facility" means buildings or structures which are occupied exclusively by offices of county and judicial officials or by courtrooms, county jails or detention centers.