12 High Street is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 10 April 1989. House.
12 High Street
- WRENN ID
- standing-baluster-merlin
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 10 April 1989
- Type
- House
- Address
- 12 High Street, Llanidloes
- OS grid reference
- SN 955 843
- Coordinates
- 52.44733, -3.53832
- Source
- Cadw listing
Description
12 High Street is a group of three-storey buildings with a single window front. Nos 12 and 13 are designed as reflected pairs. They are constructed of red brick with some stock brick headers, featuring a plinth and a first-floor cill band. The buildings have a slate roof, boarded eaves, and stacks made of both stock and red brick, with some areas that are partly slate hung. The windows are small pane sash types, with 9 panes on the second floor and 12 panes on the first floor, and there are two windows flanking the entrance to No 11. Nos 12 and 13 also have small pane sash windows next to four-panel doors.
At the rear, the elevation overlooks a courtyard that is shared with the supermarket at No 10. To the south, the site is bordered by a similar two-storey range that is partly weatherboarded and adjoins the rear of the shallower No 13.
Local climate
12 High Street sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.
It experiences an average of 53 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 32 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 — 2 transactions since 2020
- 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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