1 Heol Penrallt is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 November 1990. Residential/shop.
1 Heol Penrallt
- WRENN ID
- iron-oriel-swift
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 19 November 1990
- Type
- Residential/shop
- Address
- 1 Heol Penrallt, Machynlleth
- OS grid reference
- SH 745 008
- Coordinates
- 52.59054, -3.85365
- Source
- Cadw listing
Description
1 Heol Penrallt is a three-storey building featuring a three-window front made of scribed stucco with rusticated quoins. The roof is slightly undulating and covered with slate, and there is a slate-hung attic dormer on the right that has a small sash window. The eaves are supported by brackets and have a trefoil-decorated frieze that continues around a full-height oriel window on the right, which has a panelled apron. The first floor has horned four-pane sash windows with bracketed cills, panelled architraves that include mid-rail blocks, and lintels with keystones. The overall shopfront is topped with a bracket cornice featuring a toothed band. Flanking the two recessed domestic doorways are thinly reeded pilasters; the left doorway is boarded and studded, while the right is half-glazed. The left-hand shop window has no glazing bars and features iron columns inside that flank the entry, while the right-hand shop window has mullions and transoms. The rear of the building is slate-hung and includes camber-headed sash windows.
Local climate
1 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.
- 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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