Glasbury House is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 18 September 1960. Cottage. 2 related planning applications.

Glasbury House

WRENN ID
veiled-arch-wagtail
Grade
II
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
18 September 1960
Type
Cottage
Address
Glasbury House, HR3 5NW
OS grid reference
SO 177 391
Coordinates
52.04464, -3.20088
Source
Cadw listing

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

Description

Glasbury House is a large house dating from the 18th century and early 19th century, with later alterations. It was converted into an outdoor education centre for the London Borough of Redbridge around 1975. The building is rendered and features a slate roof that is hipped to the south, along with a later two-storey cross wing at the north end.

The main elevation of the main block consists of five bays, with the three southern bays showcasing a plat band that indicates they were built in the mid to late 18th century. There is a central door set within a Doric portico that has a deep entablature; this portico is now glazed and fitted with double part-glazed doors. Each bay has twelve-paned sash windows, except for the southern end bay which contains a door. The eaves are dentilled, and there is a gable stone stack that has been raised in brick.

The north cross wing, likely added around 1840, is also two storeys and consists of two bays, hipped as well, with a stack at the west end. It features a six-panelled door set within a round-headed opening and has a later lean-to canopy. The east elevation reflects the earlier three-bay building and is two storeys with an attic. It has a 20th-century central doorcase with pilasters and a pediment, leading to a six-panelled door over two steps. The ground floor includes late 19th-century flat-roofed square bays, while above the plat band, there are twelve-paned sashes on the first floor, along with a fine central Venetian window that has intersecting glazing bars and crown glass. The cornice is modillioned, and there are three segmental-headed six-pane sash dormers. The north cross wing is set back and also features twelve-pane sashes, though the ground floor windows were replaced in the 20th century. Extensions were built on the north side around 1975, with a flat-roofed extension added in 1993 on the west side of the north extension.

Inside, the hall features basket arches around the openings. The drawing room has an enriched cornice, and there is a well stair with a pilastered dado. In the cellar, ogee-moulded cross beams are present, which may date from the mid-18th century or could be reused from another location.

Local climate

Glasbury House sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 82% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 68% of listed buildings.

It experiences an average of 52 freeze-thaw cycles a year, more than 93% of listed buildings. Of these, 29 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
  • Sale history — 1 transaction since 2019
  • 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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