Port Sanilac Light was built in 1886 by the US Lighthouse Establishment. It was first lit October 20, 1886 as a fixed-white light. The Lighthouse is constructed with white brick, has a red roof and has a foundation of dressed stone and timber. The octagonal brick tower has a focal plane of 52 feet about the ground. The light was electrified in 1924 and automated in 1927. Dwelling and grounds sold at government auction in 1928 and has been privately owned ever since.

Privately owned and operated, the Port Sanilac Lighthouse is open to public tours in the summer months through the Sanilac County Historic Village and Museum. The light is viewable all year from the exterior grounds.