The house, a Grade II* listed building, remains a private residence and is not visible from the public highway, although the gatehouse can be seen.

In the early 20th century the Dukes of Beaufort sold off their extensive Monmouthshire estates, centred on Troy House.

[1] The site of Tredean was purchased by a Mr Henry Simpson,[2] who began the construction of a large house in the Arts and Crafts style.

[6] Cadw records its terraced setting, on the side of a steep hill, "two-storey and-attic with a full basement due to the artificial ground level".

[2] It describes the interior as "more Norman Shaw 'olde English' than Voysey" and notes the "very high standard" of the house's restoration in the very late 20th century.