Lower Trewylan (Trewylan Isaf) is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 31 January 1953. House.
Lower Trewylan (Trewylan Isaf)
- WRENN ID
- turning-floor-stoat
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 31 January 1953
- Type
- House
- Address
- Lower Trewylan (Trewylan Isaf), Llansantffraid
- OS grid reference
- SJ 216 187
- Coordinates
- 52.76054, -3.16265
- Source
- Cadw listing
Description
Lower Trewylan, also known as Trewylan Isaf, is a Grade II listed building. The northeast portion of the structure is timber-framed with brick nogging, featuring ground floor nogging from the 18th century and upper floor nogging from the 19th century. It has a modern brick stack located against the gable end and includes two windows on the south side and one on the west side.
The southwest portion dates to the early 18th century and is constructed of brick, with two windows on the south side and two windows in the gables. The gables themselves are timber-framed, with brick nogging and plaster. The southwest side is dominated by two large early 18th-century brick stacks, each topped with clusters of tall, finely moulded brick chimneys. A brick gable rises between the stacks, which has one blocked window in the gable; there is a modern window in the top storey, but no other windows below.
Local climate
Lower Trewylan (Trewylan Isaf) receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 56% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 24 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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