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

13 Pencei (Cornhill)

WRENN ID
graven-rubble-flax
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
13 Pencei (Cornhill), Porthmadog
OS grid reference
SH 568 383
Coordinates
52.92376, -4.1309
Source
Cadw listing

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

Description

13 Pencei is a two-window house that stands 2½ storeys tall with a basement. It is part of a row with Nos 11-12 and 14-15, but it is separated from Nos 14-15 by a full-height vertical joint, while the joint between Nos 12 and 13 is concealed by cement. The house is constructed of large slate-stone blocks laid in regular courses, topped with a slate roof and featuring coursed stone end stacks. The openings are offset to the left. The entrance, located on the left side, is above street level and accessed by stone steps. It has a replacement fielded-panel door beneath a narrow overlight. The windows are 4-pane hornless sashes, which include two gabled roof dormers. On the right side, slate steps lead down to a replacement boarded basement door, positioned to the left of center, with a window to its right.

Local climate

13 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 — 2 transactions since 1998
  • 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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Nearby listed buildings

  1. 12 Pencei (Cornhill) Grade II 5 m
  2. 14 Pencei (Cornhill) Grade II 6 m
  3. 11 Pencei (Cornhill) Grade II 11 m
  4. 15 Pencei (Cornhill) Grade II 14 m
  5. Caffi y Morwr Madog (The Mariner Café) and house Grade II 17 m
  6. 9 Pencei (Cornhill) Grade II 22 m
  7. Cornhill Cottage, including revetment walls and steps Grade II 23 m
  8. 8 Pencei (Cornhill) Grade II 27 m
  9. Limekiln Cottage, including revetment walls and steps Grade II 31 m
  10. 7 Pencei (Cornhill) Grade II 33 m