I am surprised there is not a historical marker for the courthouse but I found a description on Wikipedia.
In 1900, voters approved the construction of a stone courthouse.Plans were drawn by Jackson-based architect Claire Allen, and the cornerstone was laid in September 1900. However, work soon stopped as the contractor demanded more money, and lawsuits were initiated by the county and by the contractor’s bondsmen. The issue was soon resolved, and construction resumed, this time by A. W. Mohnke of Grand Rapids. The final cost of construction was $75,000. A clock was added to the clock tower in 1905.