Gwaun-y-bara is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 20 September 1977. A Contemporary House. 8 related planning applications.

Gwaun-y-bara

WRENN ID
hallowed-spindle-winter
Grade
II
Local Planning Authority
Caerphilly
Constituency
Caerphilly MP: Chris Evans (Lab)
Country
Wales
Date first listed
20 September 1977
Type
House
Period
Contemporary
Address
Gwaun-y-bara, Rudry, CF83 3DG
OS grid reference
ST 183 879
Coordinates
51.58467, -3.18016
Source
Cadw listing

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

Description

Gwaun-y-bara is a two-storey house, likely dating to the 18th century, originally composed of five bays of unequal width, with the central three bays forming a hall and the outer bays serving as a parlour and kitchen. The house has roughcast walls painted white. It features a slate roof with a brick stack on the right side, an external stack on the left, and a large, stepped stack set back on the right side. A porch with a hipped roof of stone tiles originally sheltered the centrally placed doorway, which has a segmental head and a half-lit boarded door. Late 19th-century sash windows, set within original openings and with contemporary brick sills, are present in the right-hand section of the house, which now functions as a Mountain Ranger Centre. The right gable end has a small stair window to the left and an inserted boarded door to the right.

The rear elevation is dominated by a full-height gabled projection housing the staircase. This section has late 19th-century three-light casement windows, and to the left, a large stack serves the hall fireplace. A cottage, originally located to the left, was almost entirely rebuilt between 2008 and 2009, retaining the appearance and layout of the earlier building.

The interior of the cottage was completely rebuilt after a fire around 2008-2009. The interior of the Mountain Ranger Centre retains a stone fireplace and staircase to the right of the hall fireplace, including a recess positioned at mid-height.

Local climate

Gwaun-y-bara sits in a wetter-than-average part of the UK, with an average of 1,060 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 81% of listed buildings.

It experiences an average of 32 freeze-thaw cycles a year, fewer than 59% of listed buildings. Of these, 13 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 3 transactions since 2017
  • Related listed building consents — 8 applications
  • 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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