Llys Maldwyn is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 November 1990. Hospital.

Llys Maldwyn

WRENN ID
gentle-vault-hyssop
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
19 November 1990
Type
Hospital
Address
Llys Maldwyn, Machynlleth, SY20 8BQ
OS grid reference
SH 745 009
Coordinates
52.59219, -3.85288
Source
Cadw listing

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

Description

Llys Maldwyn is a single-storey Tudor Gothic building dating from the 19th century. It features a five-bay front with pebbledash, including a prominent gabled bay at the center, along with a plinth and end pilaster strips. The hipped slate roof has wide overhanging eaves and stone chimney stacks at the rear, complemented by decorative bargeboards, a pendant, and a finial on the central gable. The building has architraves with rosette bosses surrounding 3-light casement windows that have high transoms and small pane Gothic top lights, although the lower glazing bars have been removed.

At the center, there is a pointed arch entrance with chamfered edges and bosses; the keystone rises to a blind panel that once displayed the name Londonderry Cottage Hospital. A recessed modern door retains the original ogee traceried fanlight. The side elevations are finished with scribed render, and there is a 3-light small pane window on the right. The rear features a swept roof dormer and a cross range with a brick chimney stack, which was formerly the operating theatre. A rubble wall encloses the rear courtyard, and a doorway that once led to the mortuary is also present.

In front, there is an iron-railed forecourt with spearhead finials and acorn finials on the principal uprights, along with a similar gate to the right between tall rubble gate piers. The interior of the building has been remodelled.

Local climate

Llys Maldwyn 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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