(a) There is created a body corporate and politic and an instrumentality and public corporation of this state, to be known as the Georgia Building Authority (Markets). It shall have perpetual existence. In such name it may contract and be contracted with, sue and be sued, implead and be impleaded, and complain and defend in all courts.

(b) The authority is assigned to the Department of Administrative Services for administrative purposes only as prescribed in Code Section 50-4-3.