19 Heol Pentrehedyn is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 November 1990. House.
19 Heol Pentrehedyn
- WRENN ID
- salt-string-yarrow
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 19 November 1990
- Type
- House
- Address
- 19 Heol Pentrehedyn, Machynlleth, SY20 8DG
- OS grid reference
- SH 745 007
- Coordinates
- 52.58981, -3.85304
- Source
- Cadw listing
Description
19 Heol Pentrehedyn is a late Georgian building dating from around 1800. It is a two-storey structure with two-window fronts. Numbers 17 and 19 are reflected pairs and are rendered, while number 15 is pebbledashed. The building features ornamental cement quoins at the ends and to the right of number 15. It has a steep hipped slate roof, which is grouted to numbers 17, with wide boarded eaves and large rubble chimney stacks.
The sash windows at numbers 17 and 19 have architraves, with the 12-pane glazing retained only on the first floor of number 17; the other windows are mostly horned and have 4-pane glazing. Numbers 17 and 19 also feature simple classical doorcases with modern panelled doors flanked by pilasters, while number 15 has a recessed small pane door. Additionally, numbers 17 and 19 have cellar openings.
There are modern flat roof extensions at the rear and one older gabled cross range at number 17, which also has 12-pane sash windows at the rear.
Local climate
19 Heol Pentrehedyn 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 — 3 transactions since 1997
- 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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