These rules are adopted by ________ County, Texas, under the authority of the Local Government Code, Chapter 232 and Water Code, §16.350. Notwithstanding any provision to the contrary, these rules apply only to a subdivision which creates two or more lots of five acres or less intended for residential purposes. Lots of five acres or less are presumed to be for residential purposes unless the land is restricted to nonresidential uses on the final plat and in all deeds and contracts for deeds.