Cwmavon House is a Grade II listed building in the Torfaen local planning authority area, Wales. First listed on 28 July 1997. House. 3 related planning applications.

Cwmavon House

WRENN ID
outer-joist-yew
Grade
II
Local Planning Authority
Torfaen
Constituency
Torfaen MP: Nick Thomas-Symonds (Lab)
Country
Wales
Date first listed
28 July 1997
Type
House
Address
Cwmavon House, Pontypool, Abersychan, NP4 8XH
OS grid reference
SO 270 065
Coordinates
51.75326, -3.05835
Source
Cadw listing

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

Description

Cwmavon House is a building of group value, likely dating from the 18th century. It appears as a square block but is in fact a U-shaped building constructed of rendered and painted material, probably over rubble stone, and covered by stone slate roofs. The west elevation presents four windows, unevenly spaced, with six-over-six sash windows on the ground floor and eight-over-eight sashes above. The third bay on the ground floor incorporates a partly glazed door. A hipped roof is topped by a stack on the left wall and between the third and fourth bays. The south elevation has five windows, comprising a mix of eight-over-eight and one-over-one sash windows. A projecting porch is situated on the ground floor. The north elevation also features four windows. The rear elevation is not visible. The interior was not inspected during a resurvey in January 1997.

Local climate

Cwmavon House sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 24 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 4 transactions since 2015
  • Related listed building consents — 3 applications
  • 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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