The four-bedroom property is situated in Shardeloes, a building on Missenden Road surrounded by 50 acres of private parkland and gardens. Inside the maisonette in Amersham(Image: Zoopla)The house, once the ancestral home of the Tyrwhitt Drake family, was built of stuccoed brick, with a top balustrade, a grand pedimented portico of stone, and Corinthian columns and pilasters. The Grade I listed historic house in Amersham(Image: Zoopla)The maisonette, known as the Garden Flat, is believed to be an original billiard room in part. The accommodation is spread over two floors, with the garden hallway leading to a staircase to the first floor and the formal drawing room. Inside the maisonette in Amersham(Image: Zoopla)The maisonette's private garden is accessed via a sweeping driveway with ample parking.