Trefan is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 2 August 1949. House. 2 related planning applications.
Trefan
- WRENN ID
- twelfth-lantern-fog
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 2 August 1949
- Type
- House
- Address
- Trefan, 21 Castle Street / Ffordd Castell, Criccieth, LL52 0DP
- OS grid reference
- SH 499 378
- Coordinates
- 52.91706, -4.23247
- Source
- Cadw listing
Description
Trefan is a building originally designed with a two-unit plan, featuring a central stair hall that was added in the 19th century. The structure is constructed from roughly coursed and shaped boulder rubble in large blocks, topped with a modern slate roof that has red tiled cresting and end wall stacks. The gable on the right is coped. The central entrance has a flat stone lintel above a part-glazed doorway, with four-pane sash windows on either side. To the left, there is a larger window with a heavy stone lintel that serves the principal room. Above, three small two-light casement windows are positioned below the eaves.
Local climate
Trefan sits in one of the wettest parts of the UK, with an average of 1,550 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 20 freeze-thaw cycles a year, fewer than 79% of listed buildings. Of these, 8 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
Sign in or create a free account to unlock:
- No EPC on record for this property
- No sale records on file
- Related listed building consents — 2 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings