The Principality, Maldwyn House is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 November 1990. Commercial building. 1 related planning application.

The Principality, Maldwyn House

WRENN ID
fossil-storey-ivy
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
19 November 1990
Type
Commercial building
Address
The Principality, Maldwyn House, 3 Heol Penrallt, Machynlleth, SY20 8AG
OS grid reference
SH 745 008
Coordinates
52.59064, -3.85361
Source
Cadw listing

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

Description

The Principality, Maldwyn House is a three-storey building with a six-window rendered front, featuring alternate bay windows on the upper floors. It has a slate roof that steps down over a slightly set-back bay above the carriage entry, with bracket and dentil eaves. The ground floor has rusticated and carved quoins. The ends and center of the building have splayed bays, each topped with tall hipped roofs; the left bay retains its ridge cresting. Number 3 has original four-pane sash glazing, while Number 5 has been replaced with modern top-hung casements. Architectural details include a first-floor cill band, a dentil cornice on the first floor of the bay at Number 3, and second-floor windows flanking the central bay that have panelled pilasters. The windows below feature heavy foliage-carved surrounds with a classical roundel beneath the cornice. The right-hand bay drops below the cill band and has brackets over a cambered stepped carriage arch with a keystone. The building has modern shop fronts. Maldwyn House has a six-panel door with panelled reveals and a decorative ventilation board. There is a half-glazed door within the carriageway that also has panelled reveals. The rear of the building has undergone modern alterations with slate hanging.

Local climate

The Principality, Maldwyn House 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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  • No EPC on record for this property
  • No sale records on file
  • 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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Nearby listed buildings

  1. T.A. & M. Hughes, Newsagent Grade II 7 m
  2. 1 Heol Penrallt Grade II 11 m
  3. Clock Tower Grade II 17 m
  4. Wynnstay House Grade II 19 m
  5. Barclays Bank Grade II 19 m
  6. 9 Heol Penrallt Grade II 24 m
  7. 11 Heol Penrallt Grade II 33 m
  8. Midland Bank Grade II 34 m
  9. No. 6 including The Pharmacy Grade II 34 m
  10. Royal House Grade II* 39 m