15 Foundry Terrace is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 10 April 1989. House. 1 related planning application.

15 Foundry Terrace

WRENN ID
long-rampart-gorse
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
10 April 1989
Type
House
Address
15 Foundry Terrace, Llanidloes, SY18 6AY
OS grid reference
SN 956 845
Coordinates
52.44859, -3.53729
Source
Cadw listing

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

Description

15 Foundry Terrace is a pair of 2-storey cottages featuring one window each, built with blue and dark brick fronts. The cottages have a slate roof, boarded eaves, and blue brick stacks shared between each pair. The openings have camber heads and include 6 and 12-pane sash windows, as well as 4-panel doors with plain overlights. The ground floor openings for Nos 15 and 16 are slightly raised. At the rear, there are modern windows that overlook a high revetment wall from a former foundry complex. Each cottage has a front garden with contemporary simple iron railings that are arched at the top.

Local climate

15 Foundry 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
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  • 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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