Porthmadog Telephone Exchange is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 26 September 2005. Commercial.
Porthmadog Telephone Exchange
- WRENN ID
- empty-steeple-solstice
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 26 September 2005
- Type
- Commercial
- OS grid reference
- SH 566 391
- Coordinates
- 52.93022, -4.13363
- Source
- Cadw listing
Description
Porthmadog Telephone Exchange is a neo-Georgian building dating from the 20th century. It has two storeys and an L-shaped plan, constructed from snecked rock-faced stone with pale freestone dressings, topped by a hipped slate roof. The front is symmetrical and features five bays, with a central panelled door set in a moulded round-headed surround that includes an overlight protected by half-moon pattern ironwork. Above the door, the words 'telephone exchange' are displayed in raised letters.
The lower storey has round-headed small-pane windows made from iron frames with radial glazing, while the upper storey features 12-pane sash windows. The right side of the building has one window, and the left side has four windows, all similar in style and located in yards that are concealed by contemporary coped walls. At the rear, there is a large modernist two-storey extension.
Local climate
Porthmadog Telephone Exchange sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% 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.
- Sale history — 4 transactions since 1996
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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