The 715-acre estate and its outbuildings remained largely intact until the 1970s, when the owners subdivided it to profit from development near Charleston. The central portion of the historic estate, the house and 28 acres, makes up the current site, which was purchased in 1988 by preservationists. Following the passage of enabling legislation by the United States Congress, the National Park Service purchased the current site. Because the site no longer has any structures associated with the Pinckneys, details of their time on the property are limited to archaeological and documentary work.