Nant-y-Groes is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 16 March 1992. House. 3 related planning applications.
Nant-y-Groes
- WRENN ID
- buried-ember-wind
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 16 March 1992
- Type
- House
- Address
- Nant-y-Groes, Pilleth, Whitton, LD7 1NP
- OS grid reference
- SO 265 679
- Coordinates
- 52.30456, -3.0782
- Source
- Cadw listing
Description
Nant-y-Groes is a two-and-a-half storey house with a cellar, accompanied by a two-storey, gable-ended range of 1938, all finished with roughcast render. A two-storey brick wing extends to the rear, along with a lean-to. Further rear additions include a brick lean-to to the kitchen, under a catslide roof. The roofs are slate-covered. A modern stone stack is present on the left side, alongside a brick stack with oversailing courses and two flues on the right. Three gable dormers, featuring bargeboards, pendants, and sixteen-pane sashes, are positioned to the left of centre. Other windows are three-light sashes, with a plain sash on the centre of the first floor and a bay window beneath a flat lead roof on the ground floor to the left.
A modern conservatory porch, covered by a slate roof, provides entrance via a half-glazed front door. The adjoining right-hand range features modern casement windows and a glazed door.
Inside, the house retains a fine, turned baluster staircase dating from the early 19th century. There is also good original woodwork detailing around the windows and doors. The ground floor rooms are characterised by chamfered beams and high ceilings.
Local climate
Nant-y-Groes receives an average of 900 mm of rain a year. This makes it wetter than 67% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 51% of listed buildings.
It experiences an average of 52 freeze-thaw cycles a year, more than 93% 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 13 transactions since 1996
- Related listed building consents — 3 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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