47 Mountstuart Road, Rothesay, Bute

48 Mountstuart Road is a double villa designed by John Duncan and dated 1877. It is an asymmetrical, two-storey, five-bay building in the style of Alexander Thomson, forming part of a symmetrical terrace. The layout is grouped as 1-3-1, with single bays recessed to the outer left and right. There is a full-height gabled bay offset to the left of center and an engaged tower offset to the right. The villa is constructed from yellow sandstone ashlar with polished ashlar dressings, featuring a raised base course, timber bracketed eaves over a ground floor canted window, a stepped eaves course beneath a French-pavilion roof, and overhanging timber eaves. The windows are square-headed with chamfered reveals, sandstone mullions, and chamfered cills, while the sides and rear are finished in random rubble sandstone.

On the north (entrance) elevation, there are two-leaf timber panelled doors recessed at ground level in the outer bays, with decorative fretwork on the gabled canopies above. Single windows are aligned at the first floor. A cast-iron brattishing surmounts a three-light canted window at ground level, offset to the left of center, and there is a bipartite window at the first floor beneath the apex. Additional single windows are positioned at both floors, offset to the right of center, with a gabled window at the first floor. The full-height engaged octagonal tower in the penultimate bay to the outer right features three-light windows at both floors and a decorative cast-iron bracketed balcony.

The glazing at No. 47 has been replaced, while No. 48 retains 2-pane timber sash and case glazing. The roof is covered with graded grey slate, featuring fish-scale detailing on the tower and replacement rainwater goods. There are corniced ridge and apex stacks with various decorative cans.

The interiors were not seen in 1996. The boundary walls consist of a coped random rubble wall along Mount Stuart Road, with an oval datestone set in a segmental-arched surround at the center, inscribed "Royal Terrace 1877" and surmounted by an anthemion and flanking consoles. The square-plan gatepiers have a raised base course, consoled broken pediments on each facet, armorial panels centered below, and ball-finials on top, along with various cast-iron pedestrian entry gates.