Ystrad Isa

Medium-sized F-plan house consisting of a two-and-a-half storey primary L-shaped block, with additional rear wing and a lower service wing recessed slightly to the L (NE). Of red/brown brick construction, the service wing on a limestone rubble plinth; slate roofs with stone ridge to the primary block and slab-coped gable parapets. Simple flush end and lateral chimneys. The main facade is symmetrical and is of 3 bays, with an advanced storeyed porch occupying the central bay. This has chamfered corners to the lower stages and a gabled upper section curiously squinched out with large corbels of shaped limestone. Flat-arched entrance with fine brick voussoirs and a panelled Regency wooden doorcase; contemporary 6-panel door, cross window to the L return. Segmentally-arched windows with wooden ovolo-moulded mullions and transoms and leaded glazing; projecting tiled sills. The 2-light attic floor windows are contained within flat-roofed early C20 dormers.

C-shaped rear (SE) elevation, facing the garden. This has projecting outer wings to the L and R, the latter marginally longer; C20 3-light mullioned and transomed windows to the first floor of each, with 5-light mullioned windows to the ground floor. The recessed central section has a 4-light transmullioned window to the first- and a 5-light mullioned window to the ground floor. All have early C20 chamfered sills and lintels of brown sandstone; decorative iron window furniture. Two-bay brick service wing to the NE with windows as before and boarded door to rear entrance.

Beamed former hall with stopped-chamfered main beam and plain joists. Wide, depressed-arched brick fireplace with small round-arched flanking niches; these with 6-panel fielded oak doors. Fine full-height oak dogleg stair with turned columnar balusters and paired broad baluster newels; moulded rail with flat capping and scrolled tread ends. The stair ascends to the attic where it terminates in a short gallery. The first and second-floor landings have a curious early C20 storeyed gallery adjoining to the rear and conceived in similar style to the stair. Lugged and moulded primary doorcases to the principal ground-floor rooms, with 6-panel fielded doors. The drawing room has 2 such entrances, having originally been 2 rooms and united presumably during the early C20 restoration. Moulded plaster cornices and a C20 Adamesque wooden fireplace to the front part.