5 Highgate Terrace is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 10 April 1989. Cottages, former gaol.

5 Highgate Terrace

WRENN ID
vast-step-plum
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
10 April 1989
Type
Cottages, former gaol
Address
5 Highgate Terrace, 5 Penygreen Road, Llanidloes
OS grid reference
SN 952 845
Coordinates
52.44871, -3.54284
Source
Cadw listing

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

Description

5 Highgate Terrace is a group of four three-storey, one-window red brick cottages, accompanied by a two-storey, two-window former gaol on the right end. The cottages feature a renewed slate roof, boarded eaves, and modern brick chimney stacks, with a black painted plinth. They have small pane sash windows with voussoirs, including 15-pane windows on the second floor and 20-pane windows on the first and ground floors. The entrances have camber heads and boarded doors. Between cottages 3 and 4, there is a round arched entry to a tunnel passage, now fitted with a metal door and a plain fanlight.

The former gaol has an old slate roof with a brick stack and part of it is slate hung. It features a 15-pane sash window on the first floor and a 20-pane window below, next to a similar entrance. The left end is largely made of shale, rendered at the top where a weaving loft door has been blocked up. The right gable end is pebbledash, while the gable end of the gaol is slate hung and has an attached boarded lean-to shed. A colourwashed passage leads to the shale rear elevation with brick dressings, cambered voussoirs, and modern casement windows. There are brick privy lean-tos for cottages 1 and 3, and a later one for cottage 4, along with small cellar windows and boarded loft openings that conceal windows. The rear of the gaol is constructed of shale above rubble and features small pane metal frame windows.

The second floor of the building is open throughout and served as a weaving loft. Cottages 2 and 3 have been combined into one house. The interior of the gaol retains two cells with barred windows, where chartist rioters were held, and accommodation for policemen is located above.

Local climate

5 Highgate Terrace sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.

It experiences an average of 53 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 32 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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