The Royal Oak Historical Commission designed a plaque that can be placed on a house or a business in town, indicating the year that the structure was built. This plaque is now available and can be ordered at Frentz Hardware, located at the corner of N. Main St and Gardenia, in what used to be referred to as the North End of the Village of Royal Oak.
The plaque is constructed of a heavy gauge aluminum. Round, with the words HISTORIC ROYAL OAK along the perimeter, the year of the structure is displayed in the center. It has a black background with raised silver letters and numbers. It is 7 ½ inches across. The cost of the plaque is $70. If your building was built at least 50 years ago it is eligible. All of these plaques are made in Michigan.