The Adams County Courthouse in Brighton, Colorado, located at 22 S 4th Ave., was built in 1906, and housed the judicial functions of Adams County until the 1970s when the legislation moved out and the building became the Brighton City Hall. It was listed on the National Register of Historic Places in 2006. As of 2020, it was serving as the Brighton City Hall. The original building was designed by John James Huddart and built by contractor A.B. McDonald. Denver architects and designed the expansion.