Complex sentence: Southdown Old Farmhouse is a small manor which dates from the 18th century and has undergone 20th century restorations and extensions; the manor was designated as a listed building on 31 May 1985.
Split into simpler sentences: Southdown Old Farmhouse is a small manor which dates from the 18th century and has undergone 20th century restorations and extensions. The manor was designated as a listed building on 31 May 1985.