The second level projection room was built to accommodate silent movies and the ticket vendor's window is still in place. After construction of the Thompson Memorial Building at the other end of Union village, the Town House fell into silence and disrepair, functioning as a warehouse for all sorts of cast-offs until it was threatened with sale, possibly for use as a chicken barn. In 1978 a fortunate bequest from the estate of Esther Morton enabled a major restoration. In 1986 a subsequent update was undertaken to bring the building into conformity with safety standards for public buildings. In 1998 and 1999 the Society performed further major maintenance to the exterior and interior, including stabilizing, repairing and repainting the plaster of the interior curved ceiling and the walls.
Ongoing maintenance receives sensitive attention to authenticity.
The Old Town House was deeded by the town to the Union Historical Society. There is a stage which is usually concealed by a painted hanging showing a composite depiction of Union and its surroundings. Antique quilts hang on the walls and a display cabinet dedicated to the veterans of Union contains memorabilia from the Civil and other wars in which Union citizens fought. The Old Town House is available for rental to the public from April through October for functions such as meetings, dances and wedding receptions. The building is heated but water is turned off in the winter months.