The western downstairs room opens off the hallway, and the eastern off the stair hall. There is a doorway in the wall between these two rooms, which also have back-to-back fireplaces. The fireplace in the eastern room is much larger than its twin, and it is likely that originally the eastern room was a kitchen with a connecting door to the western room, which was probably a dining room. There is a door in the eastern external wall of the former kitchen, leading to the rear verandah. A door in the north wall of the former kitchen leads to what is now the backyard. Upstairs, there is no hallway, and both rooms open off the stair landing. The western room is the most spacious in the building and opens onto the upstairs verandah. There is a fireplace in this room, but not in the room behind it. During the renovations, two additional doors, one on each floor, were cut in the southern end wall of the brick core, giving access to the weatherboard extension. Apart from this modification, the brick core survives substantially intact and sound. Skilmorlie was listed on the Queensland Heritage Register on 15 October 1998 having satisfied the following criteria. The place is important in demonstrating the evolution or pattern of Queensland's history. Skilmorlie, erected , is significant for its close association with the development of Windsor in the mid-19th century as a middle-class suburb, and with the development of nearby Lutwyche as Brisbane's principal brick-making district late 1860s-1890s. It is one of the earliest surviving residences in the Windsor-Lutwyche district, contemporaneous with adjacent Fernfield, and with brick-maker William Williams' own residence (now known as The Grange) at Lutwyche. The place demonstrates rare, uncommon or endangered aspects of Queensland's cultural heritage. It is a rare surviving 1870s brick, two-storeyed, gable-styled dwelling in Brisbane, and offers a rare and valuable contribution to present knowledge of 1870s brick construction and design in Brisbane. Queensland-wide, buildings of this type and materials are rare. The place has potential to yield information that will contribute to an understanding of Queensland's history. The potential contribution of this building to further research on 1870s building techniques, materials and design, on the development of early brick-making in Brisbane, and on the evolution of Brisbane's inner northern suburbs, cannot be underestimated. The place is important in demonstrating the principal characteristics of a particular class of cultural places.