External windows of the house are generally painted with a dark green stone sill and cream timber joinery around the window panes with cream louvered timber shutters. Other than shutters there is little decoration on any of the windows. Shutters are not fixed to every window, although there is evidence in the brickwork that this may have been the case. Some smaller shutters are painted cream with a green surround. Windows are all single-pane sash with curved heads, typical of the late Victoria period and Italianate style. Some of the windows form groups of twos or threes, such as on the southern elevation of the house to the family lounge and dining room and the first floor bedroom 3. The groups of two windows have middle timber elements painted cream whilst the groups of three windows have the middle timber elements painted green with cream inners. The windows predominantly have a flat arch of bricks above. Some windows have curved arches and may have been built at a later time or modified. As at 1 December 2008 the internal spaces were reported to be mostly intact however there had been substantial alteration to certain rooms, such as the kitchens and bathrooms that do not have any original fittings or fixtures except window and some door joinery. Intact features in the house include: door and window joinery; ceiling roses and cornice plasterwork; timber stair to first floor; niches in sitting room and family room walls; and most of the chimney pieces, grates, chimney breasts and tiled hearths. It has archaeological potential to reveal further information about the layout of the garden, internal courtyard and other buildings on the site. There were several small buildings adjacent to Llanrth in the 1870s but the one most prominent was a cottage in front at the entrance gates, known as 'coachman's cottage'. Mr Tyne and his family lived in the coachman's cottage for quite some time. Constructed in 1858, Llanarth is a large two storey Victorian Italianate mansion of red face brick under a hipped roof with a complex of brick outbuildings forming an internal courtyard, set in a generous garden area with large, mature trees including Bunya and hoop pines. The property is associated with Mr W Atkins, Thomas Jarman Hawkins of Walmer who was later Coroner, Commissioner of Crown Lands, Gold Commissioner. The first wine grapes west of the Blue Mountains were planted by Rankine and Hawkins on the land between Llanarth and Excelsior. The property is associated with the Hastings and Smith families, the latter living here from the 1860s until 1916 and Mr Fred Roberts who was famous for his discovery of gold at Meekatharra in Western Australia with his brothers Andrew, Jack & Charles.