19 Y Graig (Sunnyside) is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 1 April 1974. Terrace of houses. 1 related planning application.

19 Y Graig (Sunnyside)

WRENN ID
ancient-entrance-bramble
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
1 April 1974
Type
Terrace of houses
Address
19 Y Graig (Sunnyside), Tremadog, Porthmadog, LL49 3RL
OS grid reference
SH 559 402
Coordinates
52.94015, -4.14495
Source
Cadw listing

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

Description

This is a terrace of five 2-storey houses, part of a larger group at 9-10, 19-21, Y Graig (Sunnyside), Tremadog. They are constructed from local stone; the stone is roughly coursed and squared to No 9, and elsewhere it is random rubble with larger quoins. The buildings have stone lintels, a slate roof, and six stone stacks. No 21 was a later addition to the row and is single-fronted, with new windows and a door replacing the originals. The left-hand gable end is painted black, and a lean-to adjoins the rear. A vertical joint is visible between Nos 20 and 21. Numbers 20, 19 and 10 are single-fronted, with entrances located on the right-hand side. No 20 is the best preserved of the row and retains a boarded door with an overlight, and four-pane hornless sash windows. Numbers 19 and 9 have had their doors and windows replaced in the late C20, set within the original openings. No 9 is double-fronted with replacement doors and windows in the original openings and has a flat-roof rear wing.

Local climate

19 Y Graig (Sunnyside) 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 — 1 transaction since 2013
  • Related listed building consents — 1 application
  • 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. 10 Y Graig (Sunnyside) Grade II 4 m
  2. 20 Y Graig (Sunnyside) Grade II 4 m
  3. 21 Y Graig (Sunnyside) Grade II 9 m
  4. 9 Y Graig (Sunnyside) Grade II 10 m
  5. 8 Y Graig (Sunnyside) Grade II 25 m
  6. 7 Y Graig (Sunnyside) Grade II 31 m
  7. 6 Y Graig (Sunnyside) Grade II 39 m
  8. 5 Y Graig (Sunnyside) Grade II 68 m
  9. 4 Y Graig (Sunnyside) Grade II 76 m
  10. Cynfal Grade II 86 m