IICastellau Congregational Chapel Located at a road junction to the N of Llantrisant Common, on the W side of a lane which joins Castellau Road and Heol Ddu.
II*Castellau House Located on the E side of a narrow lane which runs N from Castellau to Gelli-wion and on to Pontypridd.
IICefn Mabley Farmhouse Fronting the road (B4595), which runs NE from Llantrisant to Beddau.
IIFormer Stable adjoining 2 Yr Allt Located towards the lower end of Yr Allt, a steep narrow cobbled lane which runs S between the church and the castle.
IIThe Guildhall Located on the N side of Castle Plain with the castle to the S. Pedestrian access from George Street.
IIThe Malthouse Fronting the road and facing E on the NW edge of the village.
IIToll House Cottage Cut into the slope at the junction of the B4595 and A473, at the base of the High Street which climbs up to the centre of Llantrisant.
IIWall with bee boles at Tondrugwaer Located in the garden wall in front of the house and facing the lane. The house is to the E of the Llantrisant bypass (A473).