1 Gellilydan Terrace is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 February 2005. Terrace house. 1 related planning application.
1 Gellilydan Terrace
- WRENN ID
- worn-ashlar-curlew
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 25 February 2005
- Type
- Terrace house
- Address
- 1 Gellilydan Terrace, Maentwrog, Gwynedd, LL41 4ER
- OS grid reference
- SH 683 399
- Coordinates
- 52.94033, -3.96017
- Source
- Cadw listing
Description
1-3 Gellilydan Terrace is a two-storey terrace of houses, built in the 18th century. The houses are constructed of roughly coursed mortared rubble masonry, with large stones serving as quoins and lintels. They have slate roofs with stone coping at the northeast gable and rectangular stone stacks with dripstones and capping. The terrace forms a group with numbers 1 and 3 Gellilydan Terrace.
Number 1, located at the far right (northeast) end of the terrace, has a doorway offset to the left, sheltered by a slate-roofed open porch supported on timber piers. To the right of the doorway is a single ground-floor and first-floor horned sash window. The ground floor window is a 12-pane sash, while the first-floor window is an unequal sash of 9 panes set under the eaves. The interior of the property was not inspected during the survey conducted in June/July 2003.
Local climate
1 Gellilydan Terrace sits in one of the wettest parts of the UK, with an average of 1,450 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 96% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 60% of listed buildings. Of these, 18 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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