Its ground floor presents an odd trio of doorways to the street: two original pointed-arched Gothic openings flank a larger flat-headed central double door that is a later, non-original insertion. The result is a façade that quietly announces its own altered history, the newer opening sitting between the older arched ones like an edit that never quite convinced. The walls below the first floor lean very slightly outward from the base, a deliberate constructional feature called a batter, intended to add stability to the lower stonework. Above this, a plat band, a projecting horizontal course of stone, runs across the façade and is punctuated by regular corbels, small stone brackets that once supported the floor structure above.

The building dates from the late fifteenth or sixteenth century and was one of several substantial stone houses constructed along Sarsfield Street during that period, when Kilmallock was among the more prosperous towns in Munster. It may appear on Joanes's map of around 1600 as a large square building to the south-west of King John's Castle, which stands nearby on the same street and is itself a National Monument in state ownership. The mansion originally rose to three storeys beneath the roof, though it now stands at two. At first-floor level, three flat-headed windows survive, each topped with a hood moulding, a projecting drip-course designed to carry rainwater away from the opening below. The stone mullions that once divided these windows appear to have been deliberately cut away at some point, presumably to accommodate larger replacement windows. The roof itself was replaced in the nineteenth century. Inside, the ground floor of the front range opens directly into the range behind, with no corridor between them, and connects further to a storage building or barn set at right angles to the main block. A degraded wooden staircase at the northern end of the front range leads upward to the first floor.

The building sits on the western side of Sarsfield Street and is registered as National Monument No. 680. Kilmallock is easily reached from Limerick city and the medieval streetscape of Sarsfield Street repays a slow walk; King John's Castle is the obvious landmark to orient yourself, and the mansion lies just to its south. The architectural description drawn on here was compiled as part of the 2009 Kilmallock Town Walls Conservation and Management Plan, prepared for Limerick County Council, so the building has at least been formally documented even if it rarely draws the same attention as its more celebrated neighbours.