7 Pencei (Cornhill) is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 30 March 1951. House. 3 related planning applications.

7 Pencei (Cornhill)

WRENN ID
idle-brick-merlin
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
7 Pencei (Cornhill), Porthmadog, LL49 9AT
OS grid reference
SH 568 383
Coordinates
52.92349, -4.1307
Source
Cadw listing

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

Description

7 Pencei (Cornhill) is a three-and-a-half-storey, two-window house. It is constructed of large slate-stone blocks laid in regular courses and has a slate roof with added skylights, along with stone stacks. The building's openings are offset to the right. The main range has a replaced half-glazed door in a slightly wider original opening, and replacement windows in original openings.

The left gable end, which faces the steep slope of Grisiau Mawr, has replacement windows on each storey, with the middle-storey window originally being a doorway. A full-height vertical joint separates the main range from a lower, rear wing built into a steep bank. The rear wing, facing Grisiau Mawr, has a doorway that has been converted into a window, a further replacement window to the left, and a third-storey entrance created by an inserted panel door. The property was not inspected internally.

Local climate

7 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 2 transactions since 1997
  • Related listed building consents — 3 applications
  • 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. 8 Pencei (Cornhill) Grade II 5 m
  2. 9 Pencei (Cornhill) Grade II 11 m
  3. Ty Toronto Grade II 15 m
  4. Caffi y Morwr Madog (The Mariner Café) and house Grade II 16 m
  5. Grisiau Mawr (steps between Pencei (Cornhill) and Ffordd Garth) Grade II 20 m
  6. 11 Pencei (Cornhill) Grade II 22 m
  7. Cornhill Wharf Grade II 24 m
  8. 12 Pencei (Cornhill) Grade II 27 m
  9. 13 Pencei (Cornhill) Grade II 33 m
  10. Harbourside Clinic and apartments Grade II 33 m