Rosewell Mains, Carnethie Street, Rosewell

Rosewell Mains is a mid-19th century farm house with later alterations and additions. The main house is a two-storey, symmetrical building with three bays, and a raised central bay, set on a rectangular plan. It is a plain classical design with single-storey, square-plan additions to the rear (northwest) and a single-storey projection to the side (northeast). The front (southeast) elevation is faced with stugged ashlar sandstone, while the remainder is of squared sandstone rubble, featuring droved window tails. Decorative features include polished ashlar cills and door surround, a base course, an eaves course, and long and short quoins. A single-storey range extends to the northeast, with a further single-storey ancillary range at right angles, forming a yard to the rear, which also contains steading buildings.

The southeast (entrance) elevation is three-bay wide, with a long, single-bay screen wall to the right. The central bay is emphasised by a projecting design with an architraved doorpiece, a cornice, a modern timber door, and a rectangular fanlight above. There is a window on each floor. Flanking bays also have windows on both floors. A boarded door is located in the bay to the outer right of the projection.

The northwest (rear) elevation has a single-storey advanced addition to the right of centre with a modern window. A square-plan back entrance porch is set at the angle between the two additions, with a window to the porch and a boarded door to the return. A window is positioned above in the centre bay.

The southwest elevation presents two bays, including a two-bay, single-storey block to the northwest. A window is present on each floor in the bay to the right of centre, and another at the first floor in the bay to the left. A wallhead stack is positioned above. Windows are found in each bay of the addition.

The northeast elevation is four-bay wide, with a two-bay single-storey addition to the right and a lean-to projection in the outer left bay. Windows are positioned on each floor in the bay to the right of centre, a boarded door and single window feature in the lean-to projection, and windows sit in each bay of the addition.

The windows are primarily 12-pane timber sash and case, with a 4-pane and a modern picture window to the addition. The roof is grey slate, with piended slate roofs to the additions and slate to the lean-to. Decorative ashlar coped wallhead stacks are present on the southwest and northeast sides, an ashlar and brick coped stack is on the right hand addition, with ashlar skews and cast-iron rainwater goods completing the exterior.