Gwynne House

Gwynne House is a terraced house that is set back slightly from Nos 4-5. It features painted stucco and a slate roof with a renewed eaves cornice adorned with small modillions, along with red brick end stacks, the right stack being lower. The house is three storeys high and has a five-window range, with 12-pane sashes throughout, which are shorter on the second floor. The central doorway has been completely renewed since 1981 to imitate the original design. It includes an open pediment supported by carved brackets, fluted consoles, a fanlight with radiating tracery, panelled reveals, and a 20th-century door with six fielded panels. To the right of the door, there is a plaque that reads: "Here lived Ernest Harold Jones, 1877-1911 Artist and Egyptologist Carmarthen Museum."

The interior has been significantly renovated since 1981. It features an earlier 19th-century staircase with stick balusters, scrolled tread-ends, column newels, and a thin ramped rail. The staircase consists of four flights and a landing, and has a reeded ceiling border with rosettes. There are six-panel doors with shallow fielded panels and panelled shutters with fielded panels. The front left room includes a sideboard recess with reeded pilasters and a reeded elliptical arch with panelled reveals, along with a scrolled ceiling border.