The following text is from the original listed building designation:
TQ 53 3 SPELDHURST GROOMBRIDGE HILL (east side), OLD GROOMBRIDGE 16/499 Mill House
GV II*
Former miller's house. Probably late C17 with some minor later alterations. Timber-framed. Ground floor is underbuilt with English bond red brick with a large number of burnt headers giving a banded effect in places. Frame above hung with peg-tile. Brick stack and chimneyshaft. Peg-tile roof.
Plan: 2-room lobby entrance plan house facing north north west, say north. Central axial stack serving slightly larger left (east) room. Stair rises to rear of stack in probably secondary 2-storey outshots. The Mill (q.v.) adjoins to left and until the C20 the mill race ran by the back of the house.
2 storeys with attics in roofspace of main block.
Exterior: Nearly symmetrical 3-window front of old casements containing diamond panes of leaded glass (particularly small panes in the hip-roofed dormers). Central front doorway contains a plain plank door under a shallow flat-roofed hood. Roof is half-hipped both ends. Rear elevation more recent but 3-window elevation in same style with half dormers.
Interior: Only limited internal inspection was available at the time of this survey. Main ground floor room has a large brick fireplace with an oak lintel. This lintel and the crossbeam are chamfered with scroll stops.
Mill House is one of the very important group of listed buildings in Old Groombridge.
Listing NGR: TQ5306037579 (1)

Description from record TQ 53 NW 16 :
Former miller's house. Probably late C17 with some minor later alterations (TQ 5306 3758 not named). Grade II*. (2)

<1> English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.

<2> DOE (HHR) District of Tunbridge Wells, Kent (Bidborough et al) 24th Aug 1990 484 (OS Card Reference). SKE40536.