24 High Street (Y dderwen Werdd) is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 22 March 1993. House.

24 High Street (Y dderwen Werdd)

WRENN ID
fossil-moulding-birch
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
22 March 1993
Type
House
Address
24 High Street (Y dderwen Werdd), Llanfyllin
OS grid reference
SJ 141 195
Coordinates
52.76662, -3.27399
Source
Cadw listing

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

Description

This building, known as 24 High Street (Y dderwen Werdd), is a three-storey house featuring a three-window design. The front is made of local brick, which has been painted, while the sides are constructed from rubble. It has a slate roof and rectangular end chimneys made of red brick.

On the second floor, there are three nine-pane hornless sash windows with stone sills. The first floor has three twelve-pane hornless sash windows. The ground floor includes a central square-headed doorway, which is framed by a doorcase with a cornice and panelled returns, leading to a panelled door. Flanking the doorway are two twelve-paned hornless sash windows.

Local climate

24 High Street (Y dderwen Werdd) sits in a wetter-than-average part of the UK, with an average of 960 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 61% of listed buildings.

It experiences an average of 45 freeze-thaw cycles a year, more than 86% of listed buildings. Of these, 25 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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  • 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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