Green Square is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 22 March 1993. Vernacular house.
Green Square
- WRENN ID
- silent-foundation-jay
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 22 March 1993
- Type
- Vernacular house
- Address
- Green Square, 1 High Street, Llanfyllin
- OS grid reference
- SJ 141 195
- Coordinates
- 52.76684, -3.27381
- Source
- Cadw listing
Description
Green Square is a pair of houses built from rubble with a half-hipped slate roof and a central brick chimney that has three stacks. The buildings are two storeys plus an attic and feature two windows on the front, with doors located at each end. The first-floor windows are set deeply below the eaves and have broad camber heads with multi-pane glazing. The ground-floor windows are similar but larger; the left house has a camber-headed doorway with an original boarded door, while the right house has a square-headed doorway with a modern door.
On the right gable elevation, there is a camber-headed window at the attic level. The left gable elevation also features a camber-headed window at the attic level, along with a section in red brick that indicates the former presence of a chimney. The rear elevation, which faces the church, has two camber-headed windows on the first floor and a single taller camber-headed window on the ground floor for each house, all with multi-pane glazing.
Local climate
Green Square 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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- No EPC on record for this property
- 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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