The Cutchogue Old House was furnished for the period when Joseph and Sara Wickham lived there. As one of the plan houses of eastern Long Island, it follows an unusual arrangement in which the kitchen, or keeping room or hall, to the left of the chimney pile is much smaller than the parlor, or living room and bedroom, on the right. This design may have been conceived with the idea of adding service areas later. The Wickham-Landon House had a full-width lean-to added across the north side soon after it was inherited by the builder's son in 1734. Its heavy-timber frame consists of eight vertical posts connected by the sills on the foundation, girts between the posts, and plates along the tops of the posts. The chimney bay includes the porch or stairwell, the chimney pile, and two closets. The east and west ends of the frame are distinguished by diagonal up-and down-braces, a configuration not seen elsewhere in seventeenth-century New England architecture, possibly reflecting concern for high gale winds on the exposed North Fork of Long Island.