Gelli Faia

The central entrance hall leads to the main rooms on the R and rear, service rooms on the L, and the stair on the L side. The hall has elliptical arches with panelled soffits. The steep semi-circular newel stair has a balustrade to the landing. Rooms on the R and to the rear incorporate outer chambers (within the lean-to) with quadripartite plaster vaults. At the service end is a quarter-turn service stair. Main rooms retain panelled shutters.

A Regency villa near square in plan of 2 storeys, of whitened roughcast walls with Tuscan pilasters articulating the bays, and pyramidal slate roof on bracketed eaves, with central rendered stack. In the lower storey is a continuous lean-to (similar to Plas Ynys Tywyn, built for Madocks' engineer John Williams). The W entrance front has unequal bays in the lower storey, articulated by pilasters. The entrance bay is offset to the L of centre and has a half-glazed panel door with Gothic pointed side lights, and renewed glazed in doors in the outer bays, of which the R-hand is wider, in openings designed for French doors. The upper storey has two 2-light casement windows. In the S garden front are 2 similar upper-storey windows, and in the lower storey a flat-roofed extension of the 1980s, with wide central bow window, flanked by 3-light windows. The E front also has 2 upper-storey windows, replacement glazing and doors in 2 openings for French windows, and an inserted window on the L side in the flat-roof extension.

The higher service wing on the N side is 2 storeys with attic, under a half-hipped roof. Its W end wall is set back from the entrance front of the main house. It has 16-pane sash windows in lower and middle storeys and a 9-pane sash window in the attic. On its R side is a lower 2-storey projection, with small-pane sash windows in the N wall and 2-light window over a later C20 gabled addition at right angles. The N face, of rubble stone, faces a sheer cliff face and has an inserted upper-storey window and dormer on the L side A narrow single-pitched projection under a corrugated iron roof has a round-headed door and vents to a pantry or game store. On the E side the wing projects beyond the main house. It 2-window E wall has replacement windows in earlier openings, and cross window in the attic, and in the short S wall a small-pane window in the upper storey and paired 8-pane sash windows to the attic under a gable.