Information from
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House type- Fortified Manor House , timber castle
Amount of remains- masonary ruins, remnants
Site description- Betchworth Castle is a fortified medieval house with later alterations and additions, situated on a sandstone spur which overlooks the western bank of the River Mole. Its north eastern end built of sandstone and brick survives in a ruinous state to 9m in height, whilst the south western end survives only largely below ground. Historical records indicate that Betchworth Castle dates to at least 1377, when Sir John Fitzalan, Marshal of England, was granted licence to crenellate his residence there. It is likely that the fortified house was constructed on the site of an earlier castle, traces of which may survive beneath the later buildings. The house subsequently underwent several phases of alteration and redevelopment, including a major remodelling during the mid-C15.
The site is a scheduled ancient monument, and is Grade II listed.