Great House (Post Office) is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 8 July 1966. House.

Great House (Post Office)

WRENN ID
muted-spandrel-sedge
Grade
II
Local Planning Authority
Carmarthenshire
Constituency
Caerfyrddin MP: Ann Davies (PC)
Country
Wales
Date first listed
8 July 1966
Type
House
Address
Great House (Post Office), Llangadog
OS grid reference
SN 706 283
Coordinates
51.9388, -3.88314
Source
Cadw listing

Also on this page: sale history · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The Great House, also known as the Post Office, is a three-storey house built in 1766 by William Powell. It features a rough-cast exterior and a slate roof with flat 20th-century eaves that were formerly dentilled, along with rendered end stacks and ornate bargeboards on the left side. The front has a three-window range, with the centre section slightly projecting. There are three small square 6-pane sash windows under the eaves, while the first and ground floor windows are 20th-century hardwood 6-pane sashes. Flanking the plain centre 20th-century door in a stucco surround are two small triangular bays with red tiles. The right ground floor bay includes a door and window for the Post Office, featuring a 20th-century glazed door and a 6-pane sash window. Above the centre door is a plaque stating the house was built in 1766.

To the left, there is a one-bay section with a cambered-headed through arch and a small window above. The rear wing has 20th-century windows. Although the house has undergone significant alterations, the original staircase remains intact. It is a dog-leg design with four flights, closed-string construction, broad treads, turned balusters, and chamfered newels. There is also one oak doorcase leading into the entrance hall.

Local climate

Great House (Post Office) sits in one of the wettest parts of the UK, with an average of 1,450 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.

It experiences an average of 42 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 21 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

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  • No EPC on record for this property
  • Sale history — 2 transactions since 2005
  • 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
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  6. Llwyn-yr-adar Grade II 55 m
  7. Telephone Call-box outside the Goose and Cuckoo Public House Grade II 59 m
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  9. The Limes Shop Grade II 89 m
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