Marine Terrace is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 26 September 2005. House.

Marine Terrace

WRENN ID
fading-niche-torch
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
26 September 2005
Type
House
Address
Marine Terrace, 3 Ffordd Garth (Garth Road), Porthmadog
OS grid reference
SH 568 382
Coordinates
52.92259, -4.13101
Source
Cadw listing

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

Description

Marine Terrace is a symmetrical two-storey house with three windows, constructed of roughcast, although much of it is obscured by vegetation. It features a slate roof and a shared stone chimney stack on the left side. All openings are framed with moulded architraves. The central entrance consists of a recessed half-glazed panel door with an overlight above it. The windows are two-pane sashes, which are shorter on the upper storey, and have been replaced in their original openings.

Local climate

Marine Terrace 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 2005
  • 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. Carreg Wen, Marine Terrace Grade II 9 m
  2. Wenallt, Marine Terrace Grade II 10 m
  3. Afallon, Marine Terrace Grade II 19 m
  4. Garthowen, Marine Terrace Grade II 28 m
  5. Aberteg, Marine Terrace Grade II 37 m
  6. Belle Vue, including forecourt wall and railings Grade II 47 m
  7. Harbour Side, including attached gate piers and wall Grade II 54 m
  8. Belle Vue, including forecourt wall and railings Grade II 54 m
  9. Rockcliff, including forecourt railings and gate Grade II 62 m
  10. 2 Pencei (Cornhill) Grade II 64 m