Richards Mansion, also known as The Mansion House, is a historic

mansion A mansion is a large dwelling house. The word itself derives through Old French from the Latin word ''mansio'' "dwelling", an abstract noun derived from the verb ''manere'' "to dwell". The English word '' manse'' originally defined a property l ...

located at Georgetown,

Sussex County, Delaware Sussex County is located in the southern part of the U.S. state of Delaware, on the Delmarva Peninsula. As of the 2020 census, the population was 237,378. The county seat is Georgetown. The first European settlement in the state of Delaware w ...

. The oldest section was built between 1796 and 1799, and is a two-story, four-bay, single pile Federal style structure that is now the rear wing. The main house was built between 1835 and 1845, and is a three-story, five-bay, frame structure in the Greek Revival style. The third floor was added in 1883, with the addition of a

mansard roof A mansard or mansard roof (also called a French roof or curb roof) is a four-sided gambrel-style hip roof characterised by two slopes on each of its sides, with the lower slope, punctured by dormer windows, at a steeper angle than the upper. The ...

in the Second Empire style. and ' The site was added to the National Register of Historic Places in 1979.

References

Houses on the National Register of Historic Places in Delaware Second Empire architecture in Delaware Federal architecture in Delaware Greek Revival houses in Delaware Houses completed in 1883 Houses in Georgetown, Delaware National Register of Historic Places in Sussex County, Delaware {{Delaware-NRHP-stub