12 Pencei (Cornhill) is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 30 March 1951. House.

12 Pencei (Cornhill)

WRENN ID
weathered-clay-yew
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
30 March 1951
Type
House
Address
12 Pencei (Cornhill), Porthmadog
OS grid reference
SH 568 383
Coordinates
52.92371, -4.13087
Source
Cadw listing

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

Description

No 12 Pencei is a late-Georgian double-fronted house built as a pair with No 11. It has 2½ storeys and a basement, constructed from large squared slate-stone blocks laid in regular courses, which are now outlined with heavy cement pointing. The house features a slate roof and a stone stack on the right side. Shared with No 11, the central entrance is raised above street level and accessed by steps that have been rebuilt in cement. The entrance has a fielded-panel door beneath a plain overlight and is flanked by 16-pane hornless sash windows. Above the door, there is a single similar window on the upper storey. To the right of the main steps, slate steps lead down to a boarded basement door.

Local climate

12 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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Nearby listed buildings

  1. 13 Pencei (Cornhill) Grade II 5 m
  2. 11 Pencei (Cornhill) Grade II 5 m
  3. Caffi y Morwr Madog (The Mariner Café) and house Grade II 11 m
  4. 14 Pencei (Cornhill) Grade II 11 m
  5. 9 Pencei (Cornhill) Grade II 17 m
  6. 15 Pencei (Cornhill) Grade II 19 m
  7. 8 Pencei (Cornhill) Grade II 22 m
  8. 7 Pencei (Cornhill) Grade II 27 m
  9. Cornhill Cottage, including revetment walls and steps Grade II 29 m
  10. Limekiln Cottage, including revetment walls and steps Grade II 36 m