Bates-Englehardt Mansion, also known as St. Johnsville Community House, is a historic home located at St. Johnsville in Montgomery County, New York, United States. It was built in 1869 as a three-story Italianate style mansion. It has a 35 feet by 40 feet main block with a two-story kitchen wing in the rear. A brick solarium was added in 1916 and enlarged and converted to an auditorium in 1934. The original Italianate style flat roof with cupola was replaced in 1916 with a Georgian style roof. The front entrance features a Colonial Revival style porch added in 1909. It was added to the National Register of Historic Places in 1989.