Trefri Fawr is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 14 October 1994. House. 1 related planning application.

Trefri Fawr

WRENN ID
broken-storey-heron
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
14 October 1994
Type
House
Address
Trefri Fawr, Aberdyfi, Aberdovey, Gwynedd, LL35 0SL
OS grid reference
SN 632 970
Coordinates
52.55411, -4.01898
Source
Cadw listing

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

Description

Trefri Fawr is a building that consists of one storey plus an attic and features three windows. It is constructed from grey-brown rubble with a slate roof and has a raking gable parapet on the left side. There is a stone chimney on the left gable and another ridge chimney towards the right. The building has three stone gabled dormers, with windows positioned across the eaves; the right dormer window is slightly deeper than the others, the left dormer has horned sash glazing, while the other two have casement windows.

The entrance doorway is roughly central and camber-headed, featuring long stone voussoirs. To the left of the doorway is a similar window with casement glazing, and to the right is another window, which was once a doorway, that is less well built and has horned sash glazing. Between the door and the current windows are small squarish blocked windows. The right gable has a camber-headed window on both the first and second floors. At the rear, there are two stone-built wings; the right (east) wing serves as a cartshed, while the left (west) wing is a kitchen.

Inside, the entrance hall has stairs directly opposite the door and a large chimney to the right, which heats the east room. This room has beams set into the walls and axial beams, indicating that a floor has been inserted in this section. The room to the west has a lateral beam and is said to have a large boxed-in fireplace, along with a further staircase towards the front of the building. The roof structure is ceiled, and the trusses are covered.

Local climate

Trefri Fawr sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.

It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 10 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
  • No sale records on file
  • 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. Barn at Trefri Fawr Grade II 20 m
  2. Trefri Hall Grade II 765 m
  3. Hen Dyffryn Gwyn Grade II* 1.3 km
  4. Penhelig Lodge Grade II 1.4 km
  5. Penhelig Lodge Grade II 1.4 km
  6. Penhelig Lodge Grade II 1.4 km
  7. Cow house at Bryndinas Grade II 1.5 km
  8. Multi-purpose farm range at Bryndinas Grade II* 1.5 km
  9. Cow house and hay store at Bryndinas Grade II 1.5 km
  10. Bryn Dinas Grade II* 1.6 km