This information is taken from the statutory List as it was in 2001 and may not be up to date.
In the entry for:-
STOURTON WITH GASPER BONHAM LANE ST73SE (north side) 6/112 Bonham House and Bonham Cottage(formerly listed as Bonham House and the Chapel of St Benedict) GV II The Grade shall be amended to II*
STOURTON WITH GASPER BONHAM LANE ST 73 SE (north side) 6/112 Bonham House and Bonham Cottage (formerly listed as Bonham House 17.12.54 and the Chapel of St Benedict) GV II Roman Catholic Chapel, house, and cottage now two houses. C14, C16, altered C18, late C19 and 1950s. Rubble stone, tiled roof with coped verges to main range, C16 range projecting to front is partly timber-framed stone slate roof, stone stacks. Main chapel and house range under one roof to east with 4-bay C16 range on different axis to west. Two-storey, 5-window main front facing south. Former chapel to right has three single leaded windows to ground floor, three pointed 2-light leaded windows with Y-tracery over, pair to right are stone, left one is wooden, domestic part of range to left has planked door and 6-light 1950s mullioned casement to ground floor, 4-light and 3-light 1950s steel leaded casements to first floor. Hipped attic dormer and C20 bellcote with pointed openings to roof, inserted stack to right gable end, coped verge with cross finial. Right return has blocked opening with moulded pointed arch, possibly C14. Rear of this range has C18 pointed 2- light window with Y-tracery to left and C14 cusped lancet to right, projecting wing has C20 lean-to stone porch to side with reset corbel and fragment of saddleback coping over, north gable has C20 casements and round-arched blocked opening, to right of wing main range continues with lateral gabled stack and C20 two-storey addition. C16 range to west, partly Bonham Cottage has original front facing north with rendered first floor timber-framed jetty over rubble stone ground floor; lean-to porch with plank door to left, 3-light casement and C16 arched light to right. Jetty on timber brackets with stone corbels has scalloped plaster to lower edge; single-light casement, 2-light and fixed light. South- facing rear of this range has lean-to extensions attached to ground floor, 4-light and 2-light first floor casements, east gable end has coped verge and large stone stack with offsets.
Interior considerably remodelled 1950s. Former chapel has rebuilt roof and inserted stack and inserted west gallery with arms of Stourton family, piscina survives on north wall, in cupboard at west end. Domestic part of main range has late C16 plaster ceiling with curvilinear thin ribs and moulded pellets, probably reset, first floor has early C19 six-panelled doors and grey marble fireplace surround with paterae, collar truss roof. Three bays of C16 range are Bonham Cottage, one bay in Bonham House; the interior has exposed jetty within lean-to on south side. Deep chamfered beams with stepped stops to compartmental ceiling in west room, open fireplace with chamfered lintel on stone jambs. Cross frame trusses exposed in first floor, tie-beam and braces with chamfered soffits, jowled main posts. Lords of Stourton lived here from the C14 and worshipped in the chapel, the chapel was closed for worship during 1940s and the whole remodelled by the 22nd baron of Stourton.
Listing NGR: ST7726733210