Rhonllwyn is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 11 August 1993. Residence.

Rhonllwyn

WRENN ID
ghost-nave-khaki
Grade
II
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
11 August 1993
Type
Residence
Address
Rhonllwyn, Llandegley, Penybont
OS grid reference
SO 140 642
Coordinates
52.26964, -3.26119
Source
Cadw listing

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

Description

Rhonllwyn is a two-storey building constructed of red brick with a slate roof. It features a central ridge stack and a projecting end stack. The windows are arranged regularly, consisting of twelve-pane sashes set under flat voussoir heads. There is a modern enclosed porch at the front. A lower wing projects from the right side, built in rubble stone with a brick upper section leading to the end stack. This wing is likely a contemporary service area but may also be part of an earlier dwelling. Although an internal inspection was not possible, the building appears to retain period interior details.

Local climate

Rhonllwyn sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 73% of listed buildings.

It experiences an average of 51 freeze-thaw cycles a year, more than 93% of listed buildings. Of these, 30 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
  • 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
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