24 Castle Street, Dumfries

18 Castle Street in Dumfries is a terrace of houses built between 1806 and 1819, likely designed by Robert Burn. The terrace consists of two storeys with attics and cast-iron-railed basements. The exterior features fainted droved ashlar stone, pilastered doorpieces, round-arched doorways, and recessed panelled doors with fanlights, with original decorative fanlights found at Nos 16 and 22. Each house typically has three bays with the door on the left, except for No 24, which has five bays with a central door and aproned first-floor windows. Sash windows are present throughout, with few retaining the original 12-pane glazing pattern. The design includes band courses between floors, string dormers, straight skews, end stacks, and a slate roof.

The interior retains some notable features, including cornice plasterwork, chimney pieces, and cantilevered stairs with decorative balustrades. Some iron railings have been partly replaced, and there is a good overthrow at No 24.