Pylewell Park is a medium-sized country house, much enlarged. Mid C18 much enlarged by early C20. Ashlar stone and yellow brick, partly stuccoed, slate and lead roofs, moulded brick stacks. Original C18 building as depicted by Kip was 2 storey and attic on basement, 7 x 3 bay central block and single storey on basement, 3 bay flanking ranges; some C18 enlargement took place; then early C20 house greatly enlarged to form 3 storey on basement, 7 x 3 bay main block, with 2 storey on basement, 4 x 4 bay flanking wings, although on the entrance front the upper storey of both parts is formed by a mansard. Entrance front of yellow brick in centre and stuccoed wings looks all C20. Centre 3 bays slightly projecting of 3 storeys with pediment in front of it above 10 steps rectangular Doric flat-roofed porch with projecting centre bay with pediment, round all parapet. Bays each side have basement windows. Sashes in architrave frames on ground and 1st floors, moulded strings. Centre 2nd floor has aprons below small windows in similar frames. Over oculus in pediment. Each side large coved cornice to mansard with 7-pane pedimented dormers. Above hipped upper roof with stacks on corners and large stacks in front of ridge to LH and on ridge in centre. Wings have 6-pane windows in basement, either side panelled plinth to Doric columns on ground floor with pair at each end. 12-pane sash in each bay. Entablature and tented mansard roof; on it 12-pane pedimented dormer. Leaded upper roof face with stack in centre. Garden front 3 storey, 3 wide bay centre block with full-height canted bay surmounted by glazed cupola. 2 storey, 4 bay flanking bays. Round-headed 12-pane sashes on ground floor, on 1st floor 12-pane sashes in architraves, and smaller sashes on 2nd floor. Balustraded parapet to all parts. The interior of the building is difficult to date but it seems to consist of high quality c1900 work of Early Georgian Style and some of the genuine C18 rooms of the original house.