[1] The castle is a 19,669 sq ft (1,827.3 m2) Category A listed building[2] and the grounds are included in the Inventory of Gardens and Designed Landscapes in Scotland.
After control for some time (during an unspecified period) by Lord Forbes of Geanies, then baron of Dunbeath, the property was reacquired by John Sinclair circa 1624.
[5] In March 1650, Dunbeath was attacked by the Royalist forces of James Graham, 1st Marquess of Montrose, during the Wars of the Three Kingdoms.
[2] The major modification was making the "northern front of the castle symmetrical and [laying] out an approach down a three-quarter-mile-long, arrow-straight, tree-lined drive".
More modern additions have been made to the north and east, in a Scots Baronial style to match the earlier building.
The defensive site was enhanced by a dry ditch on the landward side, which cuts across the narrow promontory on which the castle stands.