London House is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 22 March 1993. Commercial building.
London House
- WRENN ID
- little-spire-scarlet
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 22 March 1993
- Type
- Commercial building
- Address
- London House, Llanfyllin
- OS grid reference
- SJ 141 194
- Coordinates
- 52.76618, -3.27364
- Source
- Cadw listing
Description
London House is a three-storey building located on High Street, featuring a rendered elevation divided into two bays that are highlighted by Ionic pilasters. The top floor has two windows with twelve-pane hornless sash glazing, while the first floor has two windows with sixteen-pane hornless sash glazing. On the ground floor, there are two mid-19th century shopfronts. The shopfront on the left has an advanced doorway with a dentil cornice above and a shop window to its right. The shopfront on the right is double-fronted, featuring a central doorway between two shop windows, with classically-derived shallow pilasters and a fascia that has a bracketed cornice.
The premises extend along Narrow Street and incorporate former separate shops. The left section has a painted brick façade with a window on each floor. To the right of this, there is a rubble-fronted section with a square window on the second floor, a camber-headed window with a small-pane Yorkshire sash on the first floor, and fixed small-pane glazing in the camber-headed window on the ground floor. Further to the right, there is a two-bay painted brick fronted section that has a camber-headed window on the top floor, a square-headed first floor window with small-pane horned sash glazing, and an off-set camber-headed doorway with a broad window to its right. This section also features tall loading bay doors on the top and first floors, with a camber-headed entrance doorway beneath.
Local climate
London House 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.
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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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