Henllys is a Grade II* listed building in the Carmarthenshire local planning authority area, Wales. First listed on 8 July 1966. A Georgian House.
Henllys
- WRENN ID
- broken-remnant-grove
- Grade
- II*
- Local Planning Authority
- Carmarthenshire
- Constituency
- Caerfyrddin MP: Ann Davies (PC)
- Country
- Wales
- Date first listed
- 8 July 1966
- Type
- House
- Period
- Georgian
- Address
- Henllys, Cilycwm, SA20 0EW
- OS grid reference
- SN 755 366
- Coordinates
- 52.01406, -3.8154
- Source
- Cadw listing
Description
Henllys is a grade II* listed building featuring colourwashed roughcast and two parallel low-pitched slate roofs with four rendered end stacks. The structure is two storeys high and has a five-window long east front with flat boarded eaves. Originally, there were dormers in the front roof. The windows consist of hornless 9-pane sashes on the upper level and 12-pane sashes below, with a tall half-glazed door at the centre, set within a large earlier 19th-century Doric porch. This porch has paired 20th-century stucco columns, which replaced the original timber, and features a Greek cornice adorned with triglyphs and mutules. The north end of the building has bargeboards and one window on the first floor, while the south end includes a single-storey addition with a hipped roof. The rear of the building, likely constructed in two parts, has 12-pane sashes, with the second bay arranged at mid-heights for stair lights. There are doors located between the first and second window ranges, as well as between the third and fourth.
Inside, the building showcases earlier 19th-century plasterwork, featuring a square hall and an elliptical arch leading to an inner hall, which also has a similar arch leading north to the stair hall. The room to the right of the entry has been opened up by two simpler arches into the stair hall and two similar arches leading to the stair hall. The piers are decorated with slightly Gothic plaster mouldings, and the cornices include dentils and roundels. The inner hall features a west apsed recess. A dog-leg stick baluster stair, possibly partly from the 18th century, is present, along with panelled shutters and six-panel doors. Within the roof, remnants of a steeper pitched 17th-century or earlier 18th-century stone-tiled roof can be found.
Local climate
Henllys sits in one of the wettest parts of the UK, with an average of 1,390 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 23 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
Sign in or create a free account to unlock:
- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings