Stucco over rubble stone with low-pitched slate roof behind parapet. Three storeys, 7 bays with 3 forward breaks in 1-2-1-2-1 arrangement, the upper floors very little altered, the ground floor considerably re-arranged. Rendered stacks to left and centre, formerly a third to right, with evidence of originally having been of red brick and arcaded. Upper floors have small-paned long sashes with exposed boxes, some still original, 18-pane sashes to the first floor, 24-pane to top floor with oblong blank panels above and painted stone moulded coping with 7 ornate stone urns, the centre 2 more elaborate. The 3 projected bays have very ornate painted timber carved modillion cornices below second floor sills.
Ground floor is altered but a stone string course survives over first 3 bays and the openings are in original positions, but 20 Century plate glass windows to first 2 in moulded stucco surrounds, probably C19, and modern door with overlight in plain timber architrave to third bay. Centre bay has off-centre 18-pane sash, to right is tall door with fielded panels and glazed top panel, also not aligned with window above, and last 2 bays have late 19tháCentury glass shopwindow of 2-panes with slim column shafts. All the last 4 bays are framed in late C19 applied shopfront of fluted Corinthian pilaster each end and long entablature. The facade is even across the 4 bays, the recession of the fifth and sixth bays being lost in the alterations. The door has probably been moved from centre bay position and may be original, though altered in top panel.
Facade has 2 symmetrically placed lead downpipes with rainwater heads, fixing brackets and the pipes themselves of exceptional quality. Pipe to left is complete, that to right survives except to ground floor. 1714 date beneath heads. West end wall has parapet ramped up to centre, corner urns, two 15-pane upper windows, one similar to first floor left, blank window to right and ground floor late C19 shopfront matching that on main front. Matching lead rainwater head and pipe.
Nos 20 and 22 Vaughan Street is the former rear wing of Llanelly House, projecting slightly forward of main house end wall, 2 storeys, stuccoed, with slate roof, brick south end stack and brick stack on rear east roof. Four original 15-pane large sashes with stone sills to first floor. Ground floor wholly altered by circa 1980 double shopfront with polished black and grey stone cladding and metal-framed windows.