Electricity Supply Board — Mount Street Upper

Attached two-bay four-storey former house over basement, built c. 1810 as one of terrace of three, having full-height glazed extension of c. 1980 to rear (shared with adjoining buildings). Now in use as offices. M-profile pitched slate roof to front span, hipped to west end, behind brick parapet with granite coping and parapet gutters. Shouldered brick chimneystacks to east party wall with terracotta pots. Flemish bond red brick walling on masonry plinth course over rock-faced limestone basement walling. Square-headed window openings, diminishing in height to upper floors, with patent reveals and granite sills; block-and-start yellow brick surrounds to basement openings. Replacement timber sliding sash windows with simple horns, six-over-three pane to top floor, three-over-six pane to basement with wrought-iron grilles, and six-over-six pane elsewhere. Decorative cast-iron balconettes to first floor. Round-headed doorway with moulded surround, and painted masonry doorcase comprising pro-style Ionic columns, plain entablature, leaded batwing fanlight and replacement four-panel timber door with beaded muntin and brass furniture. Granite entrance platform with decorative cast-iron boot-scrape and three steps to street level. Basement area enclosed by decorative spear-headed cast-iron railings on moulded granite plinth. Mild-steel steps to basement. Rear enclosed by late twentieth-century building.