Forge House is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 19 July 1963. House. 1 related planning application.

Forge House

WRENN ID
hushed-cellar-winter
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
19 July 1963
Type
House
Address
Forge House, Glangrwyne, the Vale of Grwyney, Powys, NP8 1EW
OS grid reference
SO 239 161
Coordinates
51.83903, -3.10572
Source
Cadw listing

Also on this page: sale history · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Forge House is a Grade II listed building that features a single-storey front range with an entrance in a lean-to on the right side. The two-storey farmhouse is located centrally behind this front range, with a later wing on the left side that forms the garden front. The older section of the house has a long single-storey projection on the right side, likely originally built as a coach house but now serving as a garage. The exterior walls are pebble-dashed and painted cream. The front range has a hipped roof, while the rear wings have gabled roofs.

The three-bay front has eaves that project on brackets and includes round-headed hornless sash windows. In the center, there is a canted bay featuring a central pedimented doorcase with panelled pilasters and a half-lit door beneath an overlight with radial glazing. The side walls contain round-headed sash windows that are offset to the rear, along with a basement door on the right side and a barred basement window on the left side. Set back from the right end wall is a lean-to entrance porch accessed by stone steps, which has a doorway with a three-pane overlight and a door with two vertical panels.

To the right of the lean-to porch, the older part of the house features two sash windows on the lower storey, with more recently inserted windows on the upper storey and attic. The steeply-pitched roof has a stack on the left side. The right gable end of the old house includes a lean-to, and in front of it, the former coach house has a blocked doorway under a keyed lintel, with a hornless sash window to its right. The garden front wing is two storeys and three bays, with the central bay under a gablet and replaced windows.

Internally, the earlier house has been modernised. The front range includes panelled doors and shutters.

Local climate

Forge House sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% 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

Sign in or create a free account to unlock:

  • No EPC on record for this property
  • Sale history — 2 transactions since 2003
  • Related listed building consents — 1 application
  • 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
Create free account

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.

Nearby listed buildings

  1. Former Paper Mill at Usk Vale Mill Grade II 77 m
  2. Brick Sheds of former Paper Mill at Usk Vale Mill Grade II 110 m
  3. Bell Hotel Grade II 145 m
  4. White Hall Grade II 167 m
  5. Glangrwyne Court Grade II 473 m
  6. South Stable and Service Block at Glangrwyne Court Grade II 479 m
  7. Glangrwyne Court Lodge Grade II 540 m
  8. Stables and Coach House at Danygraig Grade II 823 m
  9. Danygraig Grade II 825 m
  10. Bridge 107 over the Brecknock & Abergavenny Canal including Iron Sign Grade II 921 m