9 Heol Penrallt is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 January 1952. House.
9 Heol Penrallt
- WRENN ID
- sleeping-pilaster-hawthorn
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 19 January 1952
- Type
- House
- Address
- 9 Heol Penrallt, Machynlleth, SY20 8AG
- OS grid reference
- SH 745 008
- Coordinates
- 52.59086, -3.85354
- Source
- Cadw listing
Description
9 Heol Penrallt is an early 19th century, late Georgian, three-storey building with a four-window rubble front. It features a grouted slate roof, a blue brick chimney stack, and a fluted eaves band. The building has twelve-pane sash windows with lintels and keystones, which are stepped to the second floor. One window on the second floor has been blocked. There are projecting later shopfronts with splayed entrances. The rear of the building is cement rendered and has three windows with camber-headed sash windows; the second floor has four-pane windows while the first floor has twelve-pane windows.
Local climate
9 Heol Penrallt sits in one of the wettest parts of the UK, with an average of 1,320 mm of rain a year. This makes it wetter than 95% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 62% of listed buildings. Of these, 15 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 — 1 transaction since 2022
- 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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