The building is cast in the Italianate style and was designed by Bradley and Son of Rockford, Illinois. The building's design was based on a sketch by Rochelle alderman Sam J. Parker. The two-story rectangular building is constructed from soft, red local bricks. All four elevations have decorative metal brackets and a brick entablature with dentils beneath the metal eaves. Each of the exterior corners of the building are adorned with white brick quoins. The City and Town Hall's original hip roof was metal, it has since been replaced with asphalt roofing materials.