L-shped Block to rear of is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 November 1990. Block.

L-shped Block to rear of

WRENN ID
guardian-ember-peregrine
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
19 November 1990
Type
Block
Address
L-shped Block to rear of, 46-50 Heol Maengwyn, Machynlleth
OS grid reference
SH 747 007
Coordinates
52.59042, -3.85041
Source
Cadw listing

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

Description

This L-shaped block at the rear dates from the early to mid 19th century. It has three storeys at the front and a two-storey cross range at the rear, which may have originally been similar to the cross range at No. 44, consisting of cottages with a weaving loft above. The building is constructed of rubble, with part of the front whitewashed, and features slate roofs with cut down rubble chimney stacks. The front has three windows, including several 9-pane sash windows and one cross-frame small pane casement window to the left, next to a blocked window. There are boarded doors on the ground floor and a small brick lean-to. The right gable end and the rear have blocked openings. The cross range features cambered arched ground floor openings with red brick voussoirs, while the gable end is cement rendered and includes a cut down chimney breast.

Local climate

L-shped Block to rear of sits in one of the wettest parts of the UK, with an average of 1,320 mm of rain a year. This makes it wetter than 95% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 62% of listed buildings. Of these, 15 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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  • Detailed attributes — period, style, materials, features
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  • Radon risk assessment
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