The following text is from the original listed building designation:
TR 03 NE MERSHAM THE FORSTAL (east side)
Bell House 7/113 Cottage
GV II
House. Late C18. Painted brick with plain tiled roof. Two storeys and half-hipped roof with central stack. Regular fenestration of 2 glazing bar sashes with central blank window space on 1st floor and 2 glazing bar sashes on ground floor. Central half-glazed door with flat hood on brackets. Two glazing bar sashes to right return on ground floor, and 1 glazing bar sash and 1 half-glazed door on 1st floor. Outshot to rear.
Listing NGR: TR0502039190

From the Delisting report:
Bell House Cottage is mainly constructed of red brick, although the original rear wall is of Kentish ragstone and the rear extension is weatherboarded, and has a half-hipped tiled roof with central brick chimneystack. The original part of the cottage is of two storeys with two sash windows. The north-west or entrance front has two C20 12-pane sash windows but the first floor windows have concrete lintels and there is a central blank, also with concrete lintel. All windows have C20 sloping brick cills. The central half-glazed door has a moulded architrave and flat roof on wooden brackets. An attached section of brickwork to the north is ramped down over a blocked pedestrian entrance, infilled with bricks of a different colour. There is an attached post 1938 single storey brick extension to the north. The south-west elevation also has two 12-pane sash windows. The north-east elevation has brickwork matching the north-west elevation up to eaves level but later brickwork above, suggesting that the roof was heightened in the C20. there is a C20 casement window. The south-west elevation has two C20 12-pane sash windows but the left first floor window is adapted from a longer opening. The rear or south-east elevation has a lower two storey weatherboarded late C20 extension with a roof in two hips. Entrance is into a small lobby directly opposite the straight flight staircase. The south-east ground floor room has an introduced early C19 wooden fire surround which is wider than the chimney opening. The rear wall has wide C20 folding doors opening out into the late C20 rear extension. The north-east ground floor room has some four-panelled doors. The north east room, now kitchen is in the C20 north extension. The first floor does not retain any visible original features. The roof was not accessed but recent photographs show C20 brickwork and the chimney supported on old metal railway tracks.

Bell House Cottage is thought to have been used as servants' accommodation for a larger detached house, Bell House (Listed at Grade II), situated to the south east. At a later date it was in the ownership of British Rail. It is now in separate private ownership. It appears on the 1871 Ordnance Survey map as a rectangular outline which appears to be attached to a walled orchard at the north-west corner and is linked to other boundary walls of Bell House. There is no
change on the 1898 map. By the 1907 map the building has been extended considerably to the south-east. By the 1938 map the outline has reverted to the smaller rectangular shape last shown on the 1898 map. The current map outline has a C20 extension added to the north and the building is no longer linked by walls to Bell House. The latest map does not show the recently constructed detached houses now flanking Bell House Cottage. The building was statutorily listed on 16 February 1989, at which stage the brickwork was painted. It was photographed for Images of England on 7th August 1999 when the brickwork was still painted, it had a catslide roofed rear extension and the C20 north extension is visible in the photograph. Subsequently Bell Cottage was refurbished, and this included the paint being removed from the brickwork, the single storey rear lean-to being replaced by a two storey weatherboarded extension and interior alterations. It is now surrounded by some detached houses and situated in Bell Field Close, off Church Road.

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.