(a) The commissioners court of a county may purchase, construct, reconstruct, improve, equip, or provide for by other means, including by lease or lease with an option to purchase, a branch office in the unincorporated area of the county.
(b) Any county officer may maintain an office and the county may provide any county service at the branch office authorized by this section. The maintenance of an office or the provision of a service at the branch office must be in addition to an office maintained or service provided at any other location required by law.