Nannau

3-storey 5-bay house in restrained Georgian style; square plan. Of large dressed blocks of local slate-stone with sandstone dressings; shallow, hipped slate roof with plain chimneys. Recessed, wide entrance bay to main (SE) front. Elegant entrance porch with Ionic columns and simple moulded entablature. Within, a large C19 part-glazed door with 12-pane upper glazing and panelled lower section; flanking 8-pane internal windows. Above the porch a tripartite sandstone window in a shallow, segmental arched recess; 12-pane central light with narrow 4-pane vertical flanking lights. Similar, squatter window to third floor, though with 3 equal lights, all with plain C19 sash glazing. Tall 12-pane recessed sash windows to ground floors of main and side elevations and contemporary 6-pane sashes to the upper elevations. The middle floor has plain Victorian sashes to the front and left-hand sides, though the original 12-pane glazing survives to the R; all windows have projecting stone lintels. External stepped cellar access to the first side bays from the front. Good decorative and heraldic lead hoppers survive, 2 ofwhich are original (one dated 1795) and 2 of which bear the date 1872. Plain parapet with moulded cornice; balustrading above entrance bay. Rough-dressed rubble rear with much disturbed masonry. 12 and 16-pane windows and a modern fire escape to first floor. Out of character flat-roofed modern extensions to groundfloor rear.

Adjoining the R side of the house, a triple-arched section of walling, a surviving fragment of the pavilion wings.

The entrance hall has an open segmental arch with around arch within leading to the stairwell; Ionic columns and engaged columns, and a dentilated entablature. Dentilated plaster cornice to hall and a wooden fireplace with moulded egg-and-dart entablature; engaged Doric columns and scallop-headed niches. Well stair on 3 floors with swept mahogany rail and decorative iron balusters. Moulded doorcases off hall with 6-panel mahogany doors. Drawing room to R with decorative plaster cornice; moulded architraves with gadrooned and carved overdoors. These flank a restrained marble fireplace with panelled pilasters and foliate carving to central plaque. Shallow segmental-arched niche to rear wall containing twin doors. Reeded window architraves with panelled shutters. The L ground-floor room has an Adam styleplaster ceiling and cornice and panelled splays as before. Wide segmental-arched opening to rear room with plaster cornice. Modernised upper floors have been partitioned off and false ceilings inserted.