No.18 Llandaff Row (Old Castle Farm B & B) is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 December 1976. Farmhouse.
No.18 Llandaff Row (Old Castle Farm B & B)
- WRENN ID
- quiet-frieze-dust
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 16 December 1976
- Type
- Farmhouse
- Address
- No.18 Llandaff Row (Old Castle Farm B & B), Powys
- OS grid reference
- SO 036 283
- Coordinates
- 51.94518, -3.40343
- Source
- Cadw listing
Description
No. 18 Llandaff Row, also known as Old Castle Farm B & B, is a former farmhouse dating from the 18th century. The building is two storeys high and has a four-window front, with the left end being a later addition that is set slightly back from the main three-window section. It features painted roughcast render and a plinth. The slate roof has three rooflights and flanking stacks at the three-window block, as well as at the left end. The windows are four-pane sash types. The doorway is located at the centre of the three-window block, with deep reveals, a six-panelled door, and a gabled hood. At the southwest end, there is a lower two-window rear wing that is positioned at right angles to the main structure and constructed with the same materials.
Local climate
No.18 Llandaff Row (Old Castle Farm B & B) sits in one of the wettest parts of the UK, with an average of 1,260 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.
It experiences an average of 56 freeze-thaw cycles a year, more than 96% of listed buildings. Of these, 32 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