The tower-house of the castle had a large C. I 8 wings along a rusticated doorway added to it along with the C.17 range. Moreover, the front of the Deel Castle was edged by a wall and a low office range, which probably comprised the old bawn. By the end of 18th century, Deel Castle was leased to James Cuff, Lord Tyrawley along with other lands. In 1791, he built a house besides the old Bourke Castle which was severely damaged during the Rebellion of 1798. However, in the year 1922, the house was burnt and was never rebuilt.
The Deel Castle also known as the Castle Gore was left to the illegitimate son of Lord Tyrawley, Colonel James Cuff who outraged the whole country by keeping a French mistress there. The estate of the castle was again under the hold of the Earls of Arran after the death of James Cuff. Intact till the early 20th century, the Deel Castle no longer retains its original form. The Deel Castle, although in ruins, is one of the most attractive places to visit in Ireland.