Marchwiel Hall is a grade II listed building of Georgian style, with a rendered outer facade. It features a grand and symmetric design typical of unique period country houses. The white exterior is adorned with classical architectural elements, including columns supporting a pediment above the central entrance. Large windows with decorative moldings add elegance to the facade, while chimneys and rooftop balustrades contribute to its stately appearance thus exuding a timeless charm and sophistication.