The Merchants House consists of five levels including basement kitchen, ground floor dining room, first floor drawing room, bedrooms and servants quarters. The planning is typical of a late Georgian period townhouse with kitchen, scullery, and cellars in the basement; ground floor dining room, parlour, and entrance hall; first floor drawing room with french doors onto a cantilevered balcony, and bedrooms on the upper two floors.
The style is Greek Revival. Typical details include the water leafs motifs on the stone brackets supporting the first floor window cornices, front door fanlight, heavy cornice, stone architrave mouldings to the upper windows, the fine timber geometric staircase and other interior details.