Plas-uchaf is a Grade II* listed building in the Powys local planning authority area, Wales. First listed on 4 January 1966. House.

Plas-uchaf

WRENN ID
inner-rubble-falcon
Grade
II*
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
4 January 1966
Type
House
Address
Plas-uchaf, Llangedwyn
OS grid reference
SJ 176 245
Coordinates
52.81204, -3.22311
Source
Cadw listing

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

Description

Plas-uchaf is a two-storey, symmetrical six-window house, originally with three-window return elevations to the left and right, and a six-window rear elevation. The house dates to the 18th century and is constructed of red handmade brick in two sizes; smaller bricks are used at the rear and sides up to the upper window sill height, with larger bricks of a more typical 18th-century appearance used at the front and elsewhere. The brickwork is entirely in Flemish bond. The roof is slate, laid in small random courses, with metal ridges and hips, appearing to be of an "M" form with a leaded flat. Modern brick chimney stacks are present.

The front (east) elevation features a moulded cornice with large square modillions, stone rusticated quoins, a stone platband, and a stone moulded plinth. Windows are arranged in two groups of three, with a double-square proportion of 18 panes each, using hornless sashes. Rubbed brick arches define the window openings, with no sills. The windows immediately flanking the main door are narrower, originally with 12 panes, and are now restored. Three small, hipped dormer windows with 12 panes and casements are located above the eaves. A modern, semi-glazed door is topped with a bracketted canopy.

The left elevation mirrors the front with similar cornice and quoins. The upper window on the right has been walled up with brickwork matching the colour and texture of the existing brick. The lower storey has been altered by the addition of two octagonal bays with 19th or 20th-century French windows.

The right elevation has quoins but lacks a cornice. The windows are arched with segmental arches, and the top left window has been walled up with matching brickwork. A low, lean-to range with a modern door and steel windows has been added.

The rear elevation is the most heavily altered. Original segmental arches are present on only one window; modern doors or windows are in the other positions. Lean-to structures and a fire-escape staircase are incorporated into the rear. Six attic rooflights have been added.

The interior layout is broadly symmetrical, featuring a large entrance hall, and at the rear, an open-well two-storey Georgian staircase. Notable features include good 18th-century fireplace surrounds and grates.

Local climate

Plas-uchaf 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 56% of listed buildings.

It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 24 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.

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