1. Fank Construction 2397 Buffalo Creek Blvd, Winthrop, IA 50682 Coordinate: 42.44296,-91.68453 Phone: (319) 935-3838
2. B & K Construction 1629 Slater Ave, Winthrop, IA 50682 Coordinate: 42.55163,-91.72807 Phone: (319) 935-3214