Brynheulog is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 26 August 2005. House.

Brynheulog

WRENN ID
low-vault-woodpecker
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
26 August 2005
Type
House
Address
Brynheulog, Trecastle, Llywel, Powys
OS grid reference
SN 880 291
Coordinates
51.94955, -3.62978
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Brynheulog is an attached house dating from the 19th century, constructed of painted rubble stone with slate roofs. The building consists of two sections that step downhill. The upper section features a one-window range with a large rendered stack on the left end and flat eaves that continue with those of the adjacent Three Horseshoes. On the first floor, there is a horned 6-pane sash window above a tall doorway on the ground floor that has a cambered head. The stone voussoirs in the wall above indicate that this doorway may have replaced a window.

The main range to the left is double fronted, with two similar 6-pane sash windows on each floor, flanking a central sash window above a blocked doorway. The windows have stone sills and cambered heads. The interior has not been inspected.

Local climate

Brynheulog sits in one of the wettest parts of the UK, with an average of 1,410 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.

It experiences an average of 55 freeze-thaw cycles a year, more than 95% of listed buildings. Of these, 31 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 sale records on file
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  • 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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Nearby listed buildings

  1. Three Horseshoes Grade II 10 m
  2. The Castle Inn Grade II 28 m
  3. Danycoed and front garden railings Grade II 54 m
  4. Neuadd Grade II 96 m
  5. Barn at Neuadd Farm Grade II 181 m
  6. Former National School and National School House Grade II 263 m
  7. Fingerpost at Pont Newydd, Trecastle Grade II 512 m
  8. Mynydd Bychan Cottage Grade II 856 m
  9. Gatepiers and gate on E side of Llywel churchyard Grade II 1.4 km
  10. Church of Saint David Grade I 1.5 km