1. Former longhouse dating from the 17th to 18th century, and which was the original seat of the Lloyd family (brief description of exterior & historical note; included as a Grade III item under map ref. 7/17 and under CP of Llanwrtyd Without, in the Welsh Office of Ministry of Housing & Local Government's provisional list of buildings of special architectural or historic interest for Builth Wells R D, surveyed 08/1958). Stone walls, two storeys; five-bay front; sash windows. An annual Congregational meeting was still held here in the 1950s (Welsh Office of MHLG). Status (1958): other (private house).

2. Situated on the south side of a narrow lane approximately 0.3km west of the church of St David, Llanwrtyd, in a raised position overlooking the valley to the south and backing on to the road, Dinas is a sub-medieval gentry house, with the addition in the 18th century of a large service unit or 'back kitchen'. At this time, the original house had a centralised plan with stair-hall flanked by a parlour to the right and hall to the left. A doorway next to the hall fireplace led to the service unit. The house was the seat of the Lloyd family, including John Lloyd (1748-1818), who was captain of an East India Company ship. It is a long 2-storey, 5-window range facing south, and constructed of whitened rubble stone. It has a slate roof with large rendered ridge stack at the junction of the main range and service unit, and a further stack to the right end. The earlier part of the house to the right is symmetrical and 3-window. The upper storey windows are aligned with those below and have flat heads. Most of the sashes are 6-over-6-pane, mainly hornless. A butt joint divides the main range from the service unit. The latter has a planked door offset to the right under a segmental brick head, to the right of which is a 4-over-4-pane sash window. To the left is a 4-pane sash under a flat-arched head of stone voussoirs. To the upper storey are 2 sash windows, not aligned with those below. It was listed as a sub-medieval gentry house retaining its character, the 18th century addition showing the development of this house type.
(Source: CADW Listed Buildings Database, 19 January 2001)
Ian Archer, RCAHMW, 15th February 2005.