Corner House inlcuding mile post, boundary walls and railings, 65 Closeburn, Thornhill

Corner House is a late 18th century, symmetrical, end of terrace house, with later additions, located on the corner of two main streets at the southeast end of Closeburn Village. It is a two-storey, three-bay, L-plan building in a classical style with broadly spaced windows and it was formerly used a shop and public house. The side elevation is narrow with a single window at each floor.

The house is built of rubble (painted) and has droved quoins and projecting smooth margins at its corners and the door and window openings. There is also a smooth eaves band course on the street elevations. The entrance is at the centre of the principal elevation and has a two-leaf timber boarded door with a triple glazed fanlight above it.

The windows in the street elevations are timber sash and case with a twelve pane glazing pattern. There is a piended slate roof with stone ridge tiles, hips and a pair of rendered ridge chimney stacks.

There are two 20th century single storey pitched-roof additions to the rear, each with more steeply pitched, slate roofs than the house. The southernmost early 20th century addition is painted brick and the other late 20th century addition is smooth rendered.

At the south corner of the building is a stone milepost with an angled top that is inscribed '12'. An Ordnance Survey bench mark is inscribed on the stone corner margin next to the milepost. There is a low coped wall to the front elevation with plain iron railings. There is a rubble built wall enclosing the rear garden which has rounded stone copes sitting on a lying stone course.

The interior was seen in 2018 and has detailing dating to the late 18th century. The entrance hall runs along the front of the house and has a pair of archways. One archway leads to an enclosed staircase. There are six-panel doors with decorative moulded architraves and some plainer boarded doors. The windows have timber boarded shutters and fielded panelling below. There are some contemporary fire surrounds, plain cornicing and picture rails. The first floor bathroom has timber panelling and a bespoke timber cupboard and mirror detailing.