58 Mountstuart Road, Rothesay, Bute

57 Mountstuart Road is a double villa designed by John Duncan and dated 1882, showcasing the Alexander Thomson style. This symmetrical, two-storey building features four bays and is part of a symmetrical terrace. The design includes advanced end bays and a decorative cast-iron columnar verandah that spans the recessed central bays. The exterior is constructed of coursed yellow sandstone, which shows slight weathering, with polished yellow sandstone dressings. Notable architectural details include a raised base course, dentil detailing beneath the canted eaves on the outer left and right, overhanging timber bracketed eaves, and decorative timber bargeboards on the gableheads. The building also features polished quoins, polished long and short surrounds around the openings, architraved panelling between floors, and consoled brackets beneath the projecting sills. The sides and rear are finished in random rubble sandstone.

On the north elevation, the entrance features a pair of timber panelled doors at the center with plate-glass fanlights above. The projecting verandah below the first-floor windows consists of paired and triple sets of cast-iron Ionic columns, with dentil detailing beneath the eaves and decorative cast-iron balustrading. The first floor has single windows aligned above, while the outer left and right gabled bays contain three-light canted windows on both floors.

The windows are predominantly timber sash and case, with two lower panes and plate-glass upper sections. The roof is covered in graded grey slate, and original rainwater goods are present at the front, along with coped ridge and apex stacks featuring various circular cans.

The boundary walls consist of a part-rendered stepped random rubble wall along Mount Stuart Road, with a circular datestone inscribed "Albany Terrace 1882." Flanking the entrances are square-plan polished sandstone panelled gatepiers, which have bracketed cornices and projecting plinths, along with cast-iron pedestrian entry gates.