This is what Ms Elliot had to say about it.
(2019 - Margaret Elliot)
It is consistent to the Newall style. An L-shaped wing was added mid19th century – it is thought this addition was where the shepherd to the estate was housed, and the dairy is adjoining this to the back. Some of the farm buildings and out houses of the present day have been converted into dwelling houses.
The main house has three bays, with steps leading to a Roman Doric, column porch, and a round-archway door with fanlight. At the rear of the main house, there is a projecting full-height, semi-circular stair turret with roof light. The windows on the outside of the turret are false, like many other buildings of that time, they are for appearance only. Internally, the cantilevered stair way leads to a beautiful domed cupola. The railings are straight in this part of the house and continue to the basement.
Kilquhanity stayed in the Ferguson family ownership until November 1913. When the estate was sold to Robert Lake, (Luke?) a retired paper manufacturer. He retained for his own use the remaining farm of 584 acres, with house and farm buildings, and sold Kilquhanity Mansion House (as it was then called) to a Mrs Reid. The house with seven acres of lawns and gardens was then sold by Mrs Reid to General Desmond Maxwell, who in turn transferred ownership to his son John Maxwell. The latter sold it to John Aitkenhead.