The following text is from the original listed building designation:
TQ 67 41 BRENCHLEY WINDMILL HILL, BRENCHLEY (west side) 15/196 Little Portobello including garden railings to the west 20.10.54 GV II
House. Early C18, probably a remodelling and extension of an earlier building. Additions of the 1960s, 1970s and 1980s. Flemish bond brick, the first floor tile-hung; peg-tile roof; brick stacks.
Plan: The house faces east, fronting Windmill Hill. Double depth plan with 2 principal rooms to the front heated by end stacks with a central entrance into a passage containing the stair. 2 narrow heated rear service rooms are contained within a narrow block roofed on the same axis. There was formerly a separate rear centre service stair to the first floor, the attic flight of which-still survives. Cellar below the north end of the house. 2 small 1960s and 1970s wings have been added at the north end and there is a 1980s south west library wing. The C18 plan is largely intact although the partition between the south end principal and service room has been removed.
Exterior:2 storeys and attic. Gable-ended roof; stacks with corbelled brick cornices. Symmetrical 3-bay east front with a moulded brick cornice at firt floor level below the tile-hanging and a moulded cornice below the eaves. Steps up to an C18 front door with 6 fielded panels and a horizontal porch hood. One-light windows flanking the front door have square leaded panes and may also be C18. The other windows are C18 casements with flat-faced mullions, preserving their original glazing of square leaded panes and window furniture including quadrant catches. The outer bay windows are 3-light, 2- light window above the front door. 3 attic dormers with hipped roofs and 2- light casements with quadrant catches and diamond leaded panes. The rear elevation has end stacks to the service block and a central C18 or C19 half- glazed door. Garden railings on a low brick wall, probably C19, and a contemporary gate are included in the history.
Interior: C18 dog-leg stair with a closed string and turned balusters some exposed carpentry.
Roof: Roof of main block not accessible on survey. C18 or C19 common rafter roof with a ridge board to the rear block.
Listing NGR: TQ6794941859

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