In this subchapter, "bank facility" means real property, including an improvement, that a state bank owns or leases, to the extent the lease or the leasehold improvement is capitalized, for the purpose of:
(1) providing space for bank employees to perform their duties and for bank employees and customers to park;
(2) conducting bank business, including meeting the reasonable needs and convenience of the public and the bank's customers, computer operations, document and other item processing, maintenance and storage of foreclosed collateral pending disposal, and record retention and storage;
(3) holding, improving, and occupying as an incident to future expansion of the bank's facilities; or
(4) conducting another activity authorized by rules adopted under this subtitle.