Red House remained a private residence for various individuals from 1866 until 2002, during which period various alterations were made to the interior design. In 1950 it was designated a Grade I listed building by English Heritage. From 1952 to 1999 the architect Edward Hollamby lived at the House, initiating attempts at preservation and establishing the Friends of Red House charity in 1998. In 2003, the National Trust purchased the property, undertaking a project of conservation and maintaining it as a visitor attraction with an accompanying tea room and gift shop.