21 Pencei (Cornhill) is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 1 April 1974. House. 1 related planning application.
21 Pencei (Cornhill)
- WRENN ID
- cold-lintel-moss
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 1 April 1974
- Type
- House
- Address
- 21 Pencei (Cornhill), Porthmadog, LL49 9AT
- OS grid reference
- SH 568 384
- Coordinates
- 52.92411, -4.13056
- Source
- Cadw listing
Description
21 Pencei is a three-storey corner house built in a range with No 20 Cornhill and Nos 1-3 Lombard Street. It features a whitened scribed roughcast exterior, a slate roof that is hipped at the corner, and a stone end stack on the longer Lombard Street side. The building has single-window fronts on both Cornhill and Lombard Street, each with 2-pane sash windows. The entrance is located at the corner, with a splayed design on the lower storey and corbelled out above. It has a replacement half-glazed door. On the Lombard Street elevation, the words 'Lombard Street' are inscribed into the roughcast, although this inscription is now painted over. The property has not been inspected.
Local climate
21 Pencei (Cornhill) 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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- No EPC on record for this property
- Sale history — 1 transaction since 2022
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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