(a) At any time after the exclusion or detachment of any county from the area of operation of a regional housing authority, as provided in Code Sections 8-3-114 through 8-3-116, the governing body of any such county may adopt a resolution declaring that there is need for a housing authority in the county if the governing body shall find such need according to the provisions of Code Sections 8-3-4 through 8-3-6. Thereafter a public body corporate and politic to be known as the housing authority of the county shall exist for such county, and five commissioners shall be appointed for such authority by the governing body of such county. The authority may transact business and exercise its powers in the same manner and shall have the same rights, powers, and immunities as though created by said Code Sections 8-3-4 through 8-3-6.

(b) Nothing contained in this Code section shall be construed as preventing such county from thereafter being included within the area of operation of a regional housing authority as provided in this article.