Ty Llys is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 October 1998. Farmhouse.
Ty Llys
- WRENN ID
- plain-loggia-evening
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 21 October 1998
- Type
- Farmhouse
- Address
- Ty Llys, Tretower, Llanfihangel Cwmdu with Bwlch and Cathedine, Powys
- OS grid reference
- SO 185 212
- Coordinates
- 51.88407, -3.18444
- Source
- Cadw listing
Description
Ty Llys is a two-storey farmhouse built of rubble stone, featuring stone lintels and sills, topped with a slate roof and stone stacks on the left, right, and right of the center. The main house, which has three windows, occupies the center and left side of the front, while the service end is located on the right. The main house includes casement windows with iron-frame glazing in hexagonal and lozenge patterns. The upper storey has two-light windows, with the central window positioned beneath a gablet. The lower storey features larger cross windows to the left and right of the porch.
The porch is timber-framed, has a pitched roof with a boarded gable, and contains a half-lit panelled door flanked by glazed panels that extend around the side walls. There is also a half-lit boarded front door leading into the house. To the left of the porch, a large stone lintel is situated above a cellar window. The service end on the right is a later addition, featuring a small attic cross window inserted into an original opening beneath a gablet, two two-light casements with iron-frame glazing in the upper storey, and two-light casements in the lower storey that have been inserted into original openings.
An attached rubble-stone extension on the right gable end is lower than the main structure and includes a boarded loft door and a wide inserted door below. A lean-to has been added at the rear, and to the right of this, there is a ground-floor casement window that has been inserted into an original opening with a stone lintel. In the upper storey, a central fixed light features patterned iron-frame glazing. The interior was not accessible during the survey in September 1997.
Local climate
Ty Llys sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 74% of listed buildings.
It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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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