The Sunday School appears to have been built after c.1903 as it is not shown on the OS 1/2500 2nd Edition. A Sunday School seating 40 is listed in the Royal Commission on the Church of England and other religious bodies in Wales and Monmouthshire, Appendix to Volume VI for Carmarthenshire, but the premises are shown as rented and it may not refer to this building. However the building must have been erected about this time as it appears to be a simple round-headed style, gable entry structure. Latterly it has been a Church of the Latter Day Saints and has been added to considerably on the east side.
