The Bastrop County Courthouse is a three-story, stuccoed brick, Neo-classical Revival structure with a copper-domed clock tower in the center of a flat roof. Designed by J. W. Preston and Sons and reviewed by F. E. Ruffini, the courthouse was built in 1883-1884 and utilized the traditional cross-corridor plan of Victorian courthouse design.
Immediately adjacent to and west of the courthouse, stands the three-story tan and red brick Victorian Old Bastrop County Jail, designed and built by Martin, Byrnes, and Johnston in 1891-1892. During this era of romanticism, the designers made no effort to symbolically represent the function of the building, as was the style of the day. Rather, with the contrasting red brick in the pilasters and stilted arches, the intent was to create a dignified and interesting building, which appears essentially the same today as it did when it was built.