It is a three-storey brick and stone building planned along an elongated north-south axis, terminating in a projecting wing with bay windows at the northern end and a four-storey Italianate tower at the southern end. Decorative sandstone elements on the sills, pediments, chimneys and column capitals are used as ornamental features. The red brickwork is laid in Flemish bond with tuck pointing. The Principal's Flat forms a small wing to the south west of the tower. The main building sits prominently and dramatically at the top of artificially constructed grassed terraces, affording views to the surrounding gardens.