St Ann's Mount, Polton Bank, Polton

St Ann's Mount is a hillside villa, originally dating to circa 1810, with additions made in the mid-19th century. It is a two-story, five-bay structure with picturesque detailing and a diverse range of architectural elements, situated to take advantage of its hillside location. The front (west) elevation is constructed of stugged grey sandstone ashlar, while the remaining portions are of pink sandstone rubble. Notable features include a base course, a dividing cornice, raised cills to the additions, a balustrade between the ground and first floors in the center and to the right, an eaves course and cornice, crenellations to a tower, and long and short quoins.

The west-facing entrance elevation presents an architraved doorway with multi-pane, two-leaf doors and a letterbox fanlight above, positioned to the left of the center. To the right is an advanced tripartite window. There is a window in each bay at the first floor level, and a balustraded balcony spans both bays at sill level, supported by two large consoles flanking the door. A full-height three-light canted window is set to the outer left, while a full-height two-light semi-circular tower occupies the penultimate bay to the right, featuring a window at each floor. The final bay to the right has a window.

The east-facing rear elevation is asymmetrical, with five bays arranged in a grouped 3-2 configuration. The three-bay group to the left includes a part-glazed, timber-panelled door with a window to the left in the central bay, and a window above. A boarded door is at ground level in the outer left bay, with a window above. Windows are present at each floor in the right bay, and a lean-to addition extends from the ground floor to the outer right. The two-bay group to the right features a single-light, three-quarter circular tower on the left, with a window at each floor. A window is present at each floor in the right bay.

The south-facing side elevation has a blank wall with a square-plan, piend-roofed addition to the left of the center, featuring a square window facing south. A wallhead stack is located above. The north-facing side elevation also has a blank wall, with a barred window at ground level in the outer right bay, and a central wallhead stack above.

The windows display a variety of glazing patterns, including lying-pane timber sash and case windows to the canted addition, and 12-, 8- and 2-pane timber sash and case windows elsewhere. The roof is covered with grey slate, along with the outbuilding. Ashlar coped wallhead stacks are located on the north and south sides, and ashlar skews are present on the outbuilding. Cast-iron rainwater goods are in place.

The interior boasts an original stone staircase with decorative cast-iron banisters and a timber handrail, and architraved doors. A pilastered marble fireplace and original fitted cupboards at the return of the first-floor landing also remain. Later additions include a kitchen on the ground floor and some original light fittings on the first floor. Various alterations have been made over time.

To the northeast is a piend-roofed, rectangular-plan garage constructed of pink sandstone rubble with a brick lean-to addition.