Spectrum is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 November 1990. House.
Spectrum
- WRENN ID
- grey-obsidian-solstice
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 19 November 1990
- Type
- House
- Address
- Spectrum, 27 Heol Maengwyn, Machynlleth
- OS grid reference
- SH 746 008
- Coordinates
- 52.59073, -3.85171
- Source
- Cadw listing
Description
Spectrum is a three-storey building with a three-window symmetrical front, featuring light Victorian Gothic ornamentation. It has a plinth and an impost band at the first floor. The slightly undulating slate roof is topped with end chimney stacks, one of which is made of blue brick, and includes a pointed arch eaves band. The building has horned four-pane sash windows; the second-floor windows have semi-circular arched heads with trefoils in the spandrels. The lower windows are square-headed and feature ornamented tympani under semi-circular arched hoods with panelled ornament, and there are stopped labels at the ground floor. The entrance is marked by an arched and gabled Gothic hood adorned with trefoils and pendants flanking the doorway, which has a half-glazed door beneath a punched circular tympanum. The rear of the building is made of rubble with red brick voussoirs above small pane sash windows, and it steps back at the eastern end.
Inside, the central passage walls have been removed to create a full-width shop, but the arches from the former hallway have been retained.
Local climate
Spectrum 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- No sale records on file
- No related consent applications matched
- 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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