 Single-storeyed side verandahs are partially enclosed in places to house a side chapel, confessionals, and entrance to the baptistery, with a single-storeyed vestry and sacristy structure at the rear of the sanctuary.The baptistery is a separate structure with a circular plan which is attached to the northern side of the narthex.The cathedral has a reinforced concrete frame clad externally with red brickwork and internally with cream brickwork.