Islwyn is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 20 July 2004. House.

Islwyn

WRENN ID
stony-lancet-primrose
Grade
II
Local Planning Authority
Ceredigion
Constituency
Ceredigion Preseli MP: Ben Lake (PC)
Country
Wales
Date first listed
20 July 2004
Type
House
Address
Islwyn, Pontrhydfendigaid, Ystrad Meurig, Ystrad Fflur
OS grid reference
SN 730 666
Coordinates
52.28338, -3.86207
Source
Cadw listing

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

Description

Islwyn is a small house built from colourwashed rubble stone, featuring a close-eaved slate roof and large colourwashed rubble end chimneys with dripstones and capstones. The house is two storeys high and has a double-fronted design that is significantly offset to the left, making the parlour side, located to the left of the door, very narrow. It has four 4-pane horned sash windows, with the upper two positioned under the eaves and square, longer windows on the ground floor, all equipped with rough slate sills. The door is situated closer to the left window and is positioned to the left of centre, with a stone slab lintel above it, as well as above the right-hand ground floor window. Both end walls of the house are windowless. At the rear, there is one ground floor square 4-pane horned sash window with a slate sill. There is no outshut. The property has not been inspected.

Local climate

Islwyn sits in one of the wettest parts of the UK, with an average of 1,280 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 89% of listed buildings.

It experiences an average of 44 freeze-thaw cycles a year, more than 85% 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 — 5 transactions since 1996
  • 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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