Downton House is a Grade II* listed building in the Powys local planning authority area, Wales. First listed on 21 September 1962. House. 2 related planning applications.

Downton House

WRENN ID
hallowed-iron-alder
Grade
II*
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
21 September 1962
Type
House
Address
Downton House, New Radnor, LD8 2RD
OS grid reference
SO 230 606
Coordinates
52.2382, -3.12794
Source
Cadw listing

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

Description

Downton House is a two-storey building with a rendered exterior, featuring a five-bay south front and two-bay 19th-century additions to the left. These additions include a large apsidal-ended rear wing and a rubble service wing set back from the front elevation. Additional ranges are set at right angles to the rear, all topped with hipped slate roofs and tall brick stacks. The entrance has an open timber porch with a flat roof, leading to a central six-panel door with a fanlight above. The windows are tall twelve-pane sashes with stone cills, while the 19th-century ranges have larger window proportions.

The interior showcases a Neo-classical decorative scheme. The hall and landing feature arches with fluted colonnettes and key-blocks, along with plaster cornice friezes adorned with triglyphs and rosettes. Doors and windows are framed with fluted architraving, and there are panelled shutters and window reveals, as well as a moulded dado rail. The marble fire-surrounds have ornamental friezes, some incorporating 18th-century cast-iron hob grates. Built-in glass-fronted cabinets and bookcases display Chippendale-style glazing patterns. The drawing room boasts an ornate plaster ceiling in the Adam style, which appears to be of a later date. The stairs run axially to the house at the rear of the hallway, featuring a plain turned newel, a ramped rounded handrail, and stick balusters.

Local climate

Downton House receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 54% of listed buildings.

It experiences an average of 50 freeze-thaw cycles a year, more than 91% of listed buildings. Of these, 28 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 EPC on record for this property
  • No sale records on file
  • Related listed building consents — 2 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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  2. Part of L-Plan Ranges of Barns to N of Downton House Grade II 154 m
  3. Part of L-Plan Ranges of Barns to N of Downton House Grade II 164 m
  4. Part of L-Plan Farm Ranges about 20m E of Downton Farmhouse Grade II 171 m
  5. Part of L-Plan Farm Ranges about 20m E.of Downton Farmhouse Grade II 175 m
  6. Part of L-Plan Farm Ranges about 20m E of Downton Farmhouse Grade II 175 m
  7. Part of L-Plan Farm Ranges about 20m E.of Downton Farmhouse Grade II 179 m
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  9. Gate Piers,Walls and Railings at former North Driveway to Harpton Court Grade II 744 m
  10. Lodge at former North driveway to Harpton Court Grade II 758 m