Cornhill Cottage, including revetment walls and steps is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 1 April 1974. House.

Cornhill Cottage, including revetment walls and steps

WRENN ID
riven-pediment-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
Cornhill Cottage, including revetment walls and steps, Porthmadog
OS grid reference
SH 568 384
Coordinates
52.92391, -4.13113
Source
Cadw listing

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

Description

Cornhill Cottage and Limekiln Cottage are a pair of two-storey, two-window houses. They are built of large slate-stone blocks laid in regular courses and have a slate roof with two later stacks rendered in roughcast. Cornhill Cottage, on the left, has a replacement glazed front door and replacement two-light casement windows set within the original openings. Limekiln Cottage has a former doorway on the right, now a window, alongside an enlarged modern window to the left. The upper storey of Limekiln Cottage also has two-light casement windows in original openings. A modern rear wing, rendered in pebble-dash and painted white, provides access to the cottages and has a modern glazed door. A boarded door and overlight, located on the left side of Cornhill Cottage at street level, provides access to the yard behind No. 15 Cornhill.

Two revetment walls retain the steep ground from street level to the entrances of the cottages. These walls are constructed of coursed, unworked slate-stone. The lower revetment wall has a concrete coping, alongside gateways featuring slate orthostats, leading to slate steps that rise to the houses. Coping courses are also present on the return walls of both revetments. The cottages belong to a group with other buildings on Cornhill.

Local climate

Cornhill Cottage, including revetment walls and steps 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 — 3 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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  1. Limekiln Cottage, including revetment walls and steps Grade II 8 m
  2. 15 Pencei (Cornhill) Grade II 11 m
  3. 14 Pencei (Cornhill) Grade II 18 m
  4. 13 Pencei (Cornhill) Grade II 23 m
  5. Tafarn Pencei Cafe Bar Grade II 23 m
  6. 12 Pencei (Cornhill) Grade II 29 m
  7. 19 Pencei (Cornhill) Grade II 32 m
  8. 11 Pencei (Cornhill) Grade II 34 m
  9. Caffi y Morwr Madog (The Mariner Café) and house Grade II 40 m
  10. 20 Pencei (Cornhill) Grade II 40 m