The Yat is situated immediately south-west of St David's Church (NPRN 400392), at the junction of three former roads which converge on the church. The current building is a Seventeenth-century gentry house. A Baptist congregation was formed at Glascwm in the seventeenth century by the Lewis family, who lived at the Yatt. A piece of land immediately east of the house was set aside for a baptisry and burial ground (NPRN 420071) and has burials of the Lewis family and the later Beavan family, who later married into the Lewis family and inherited the Yatt. The burial ground was used for burials until 1876. Samuel Beavan acquired the Yatt by marrying the Lewis heiress, Maria (died 1828). It was he who changed the name of the house to Glascwm Court in the mid-nineteenth century. In the 1960s its name reverted to the Yat.

The current house is a seventeenth-century gentry house. It is thought to have originally been L-shaped, but only the parlour wing has survived. The original hall range was probably replaced in the eighteenth century to create a centrally planned house. The house is constructed of whitened rubble-stone and has slate roofs with cusped barge boards. Its front elevation comprises a 2?-storey gabled bay (incorporating the entrance and constituting the parlour wing of the seventeenth-century house) and a three-storey eighteenth-century extension. The rear elevation has a late twentieth century conservatory. The gable end of the former parlour wing projects forward and has added raked buttresses. Its side wall is built into the bank. Service rooms had been added to the house by 1837, linking the house to a previously detatched dovecote. The former dovecote has a corbelled upper storey under a pyramidal roof and the side facing the road has a blocked segmental window. Behind the dovecote is the two-storey nineteenth service wing with two-light windows in each storey facing the road, and two-light windows in its rear gable end. The gable chimney stacks all have blue and yellow-brick shafts.

Sources include:
Cadw Listed Buildings Database
Radnorshire Society Transactions 23, 1953, `The Lewis Family of Glascwm?.

RCAHMW, 25 April 2014