Greenvale House — Patrick Tierney Street

Detached three-bay two-storey former mill house, built c. 1850. Two-storey return to rear (east), single-storey flat-roofed extension to south-west corner. Hipped slate roof, clay ridge and hip tiles, unpainted smooth rendered flat-capped chimneystacks, moulded cast-iron gutters on red brick corbel course, cast-iron downpipes. Random uncoursed rubble walling, squared rubble quoins; unpainted roughcast rendered walling to return. Square-headed window openings, red brick block-and-start surrounds, flat brick arches, stone sills, aluminium casement windows. Segmental-headed door opening to main entrance, partially infilled, red brick block-and-start surround reveals, triple row brick arch, plain-glazed overlight, painted timber double doors each with single bottom panel and glazed top panel, flanked by engaged painted timber pilasters set on limestone plinths; square-headed door opening to south elevation, red brick dressings, painted timber glazed double doors. Set in grounds; approached by driveway from west; four-bay three-storey former grain store c. 1820 to north-east, now in use as office, pitched slate roof, random rubble walling, red brick quoins, red brick eaves corbel course, square-headed window openings with red brick dressings, timber casement windows, masonry sills. Single-storey extensions to north and south of grain store; mill race (no longer in use), weir and River Dee to south.