Trewern is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 29 August 2003. Farmhouse.
Trewern
- WRENN ID
- dark-sill-swallow
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 29 August 2003
- Type
- Farmhouse
- Address
- Trewern, Llanrhaeadr-Ym-Mochnant
- OS grid reference
- SJ 135 262
- Coordinates
- 52.82711, -3.28388
- Source
- Cadw listing
Description
Trewern is a large farmhouse built in a style that features quasi-rubble masonry, with a low rendered porch on the north side that is likely made of brick and painted white. The building has a slate roof with tile ridges, and the newer part has a taller triple roof compared to the original house. Yellow brick chimneys are located at both ends and in the middle.
The north elevation of the original range has three windows, featuring 12-pane horizontally sliding sash windows on the upper level and a single 16-pane sash window below. There is a low modern lean-to porch on the left side.
The south elevation, designed in the 19th century to serve as the front, is the most prominent feature of the farmhouse. It consists of three gables, with a datestone in the central gable that reads 'Rebuilt by / William and Mary Morris / 1867'. The left and center gables have a three-window arrangement with vertically aligned 16-pane sash windows and a central semi-glazed main door. The windows have stone sills and timber lintels, and the left ground storey window is set in a small canted bay. The doorway is framed by a timber porch with brick footings, a slate roof, and lattice panels. The right gable features two similar upper windows positioned lower, with the outline of a bricked-up attic window above and a small window below. There is one similar window on the east elevation and two on the west elevation. Most of the sashes are hornless, although several have been restored with horns.
Inside, the hallway at the 19th-century entrance has straight stairs on one side. The stairs in the central unit of the earlier north range are now secondary. A large lateral farmhouse chimney is located in the west unit, along with stop-chamfered main beams and rough joists. There is a boxed-in oven believed to still exist in the east unit.
Local climate
Trewern 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
Sign in or create a free account to unlock:
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings
Nearby listed buildings
- 7 Park Street including railings at front
- 8 Park Street including railings at front
- Milestone at Green Ucha
- 9 Park Street including railings at front
- 10 Park Street including railings at front
- The Green Stone
- Honeysuckle Cottage (Former Master's House of Llanrhaiadr National School)
- Former National School
- Trigfan (including building at the rear of Y Bwthyn)
- Y Bwthyn including iron railings at front