In 1769, George Craster erected an impressive five-bayed, three-storey Georgian mansion adjoining the south side of the Tower, which was reduced to three storeys and recastellated at this time.

In 1838, Thomas Wood Craster (High Sheriff of Northumberland in 1852) employed the architect John Dobson to improve and modernise the property.

The Tower was bought back by his son, Oswin Craster, and his cousins[2] and was restored and converted into three separate residential apartments.

At basement level, the walls are 2 metres (6 ft 7 in) thick and a barrel vault supports the upper building.

[3] The tower originally had four storeys, but this was reduced to three by George Craster's heightening the middle floor during the 18th century.