Ga. Code § 35-2-41
Subject to the provisions of Code Section 35-2-41.1, any municipality or county of this state is authorized to purchase and convey property by deed, gift, rent, or lease for the use of the department for division or district headquarters. If the deed from the municipality or county to the property to be used for such headquarters contains a reversionary clause to the effect that the property shall revert to the municipality or county in the event it ceases to be used for the headquarters, the commissioner shall not be authorized to enter into any contract or agreement relative to the construction of quarters, barracks, or other facilities for such headquarters which shall, in any manner whatsoever, obligate the department to pay for more than one-half the costs of construction of the quarters, barracks, or other facilities. Any such contract or agreement must be approved by the board.
OCGA § 35-2-41