I went with some friends to study a very old ( for Alabama) house. The original room sits on hand hewn beams and appears to be pre-1830. The second room was added and sits on 2x12 floor joists. The next two rooms were added to the front of the house probably in the 1920's when the front porch was removed. One of the two rooms is old enough to be antebellum. The fifth room is a kitchen added to the house when the original detached kitchen was probably torn down.