Castle House is associated with two important Sedgemoor families, the Boards and the Ackermans; John Board (1802-1861) who extended his family's brick company into cement in 1844, and his grandson William Ackerman who joined the company in 1871 and is credited with the first ‘true’ Portland cement.’ Built in 1851 to resemble a Tudor gatehouse, the construction uses panels of prefabricated concrete, with significant further usage of concrete throughout the building.

[3] The house is two storeys high and designed to look like an ornate Tudor gatehouse.

[1] Inside, the building includes more concrete features, such as the staircase, the handrails and the window frames.

[2] Castle House was a finalist in the 2nd BBC television series Restoration in 2004 and was supported by friends of Joe Strummer.

[7] In 2012 a grant of £300,000 was made by NNB Generation Company (part of Électricité de France) as part of monies paid to the local community for the development of Hinkley Point C nuclear power station to the SAVE Trust for the restoration of Castle House.