Pentwater Blue - When you see it you\'ll say, \"I guess that\'s why they call it The Blue (Pentwater Blue)\". 82 E. First Street, Pentwater, MI The Blue is a newly renovated historical home in the heart of Pentwater Village. It was built in 1879, one of the most desirable homes in the village. The Blue is set up to accommodate 3 separate families or one large family. The total of all living space is approximately 3000 square feet.