Erwood Hall is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 3 August 2001. House. 1 related planning application.

Erwood Hall

WRENN ID
watchful-forge-jay
Grade
II
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
3 August 2001
Type
House
Address
Erwood Hall, Builth Wells, LD2 3EZ
OS grid reference
SO 097 430
Coordinates
52.07854, -3.31772
Source
Cadw listing

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

Description

Erwood Hall is a house dating from the 18th century, constructed of grey coursed squared stone with slate roofs and stone end stacks. The right-hand stack forms an L-shape where the gable end returns. The main front of the house has two storeys and an attic, with a three-window arrangement. Two flat-roofed dormers have been added, each containing a pair of four-pane casement windows. The formal front elevation is in a Georgian style, featuring a central pediment, painted timber modillion cornices along the eaves, and a moulded base. A lunette window is set within the pediment, surrounded by stone voussoirs. Ground-floor and first-floor windows are casement windows with stone voussoirs, the first floor windows having six-over-six panes and the ground floor windows having eight-over-eight panes. The central doorway is within an earlier 20th-century stone porch with a flat roof and a stepped cornice. The porch has a large arched doorway with stone voussoirs, a radiating-bar fanlight, and half-glazed double doors with side-lights. A two-storey flat-roofed stone addition has been constructed to the right, featuring a one-window range to the front and the side. A rear wing is also present, with a stack at one end. The house is not available for internal inspection but is believed to have a centre hall plan with principal rooms on each side and a staircase to the rear.

Local climate

Erwood Hall sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 69% of listed buildings.

It experiences an average of 46 freeze-thaw cycles a year, more than 87% of listed buildings. Of these, 25 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 — 6 transactions since 2001
  • 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
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