Exterior
Two storeys with attics. Long main range with cross-wing to L. Main range is 3-window with tall gabled porch wing to centre; cross-wing to L (formerly No 21) is advanced with hipped swept roof. Rendered and lined on a plinth under slate roofs with brick stacks: large clustered stack at angle of main range and cross-wing, diagonally-set stack to R, slightly behind ridge; tall stack to L end (at junction of 21 & 22). Porch is open to ground floor, supported on 2 Ionic columns on tall moulded sandstone bases; moulded and dentilled jetty bressumer. Inside the porch, moulded wooden doorcase containing an old boarded door. Above jetty, to 1st floor and attic, a 2-light wooden casement with quarries, probably early C19; each side of porch has single light to 1st floor. Gable has cusped barge boards and a finial. Ground floor to R of porch has cross-window with quarry glazing; to L, a lean-to with wide 16-pane horned sash, slightly projecting into porch. Upper storey has 2-light casements with quarries flanking porch; attic has very small dormer to L, with hipped swept roof and 4-pane window. Cross-wing has hipped swept roof, the openings asymmetrically arranged. Pedimented doorcase with panelled pilasters to R, containing a 6-panel door, the upper panels glazed; to L, a narrow 12-pane hornless sash. Upper storey has 2-light small-pane casement offset to R of centre.
No 22 is advanced from the return wall of this wing, and therefore there is no facade detail visible externally, but roof-pitch has 2 raked attic dormers with 2-light casements. To rear, cross-wing is advanced to R, also with hipped swept roof. Across centre, a slightly advanced 4-window block with hipped roof. Gabled service wing to L (adjoining rear of No 18). The advanced blocks are roughcast with horned sash windows: Cross-wing has large 16-pane sash to ground floor, and 12-pane sash to upper storey, offset to R. Central block has flat-roofed porch on narrow columns to R, containing a half-glazed panelled door under a gothic overlight with intersecting glazing; 16-pane sash to L. The 1st floor has 4 evenly-spaced 12-pane sashes; attic has central dormer with hipped roof containing a 2-light small-pane casement. Service wing to L is of one-and-a-half storeys, rendered under a slate roof with tall brick ridge stack. Two-light small-pane casement to gable, under which is an added small stone block; N side has panelled door and further gable with cross-window.