Tynllan is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 20 July 1995. House.

Tynllan

WRENN ID
watchful-obsidian-blackthorn
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
20 July 1995
Type
House
Address
Tynllan, Llanelltyd, Gwynedd
OS grid reference
SH 717 195
Coordinates
52.75803, -3.90188
Source
Cadw listing

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

Description

Tynllan is a single-storey primary range oriented north-south, with a one and a half storey cross-range oriented east-west. The building is constructed from rubble and has rough-cast finishes on all west-facing walls. It features slate roofs, with the primary block having a steep pitch. The end chimneys are simply capped and include weathercoursing.

The eastern section, known as Tynllan, has a modern part-glazed door leading into the early range, accompanied by a 19th-century four-pane casement window to the left and a blocked window beyond. The east-west range has a nine-pane fixed window on the ground floor, with a hipped dormer above that contains a four-pane casement. Attached to the east gable is a later rubble gabled outhouse with a slate roof, featuring a boarded door on the right and a small plain-glazed window to the left.

Bryn, which predominantly faces west, has two six-pane casement windows on the ground floor of the cross-wing gable, with two four-pane casements above. There is a boarded door to the left of the primary range and another near-central entrance beyond, which has a run-off-stopped pine doorcase. Flanking windows include a four-pane window to the left and a six-pane window to the right. A catslide dormer with a four-pane sash is present in a recessed addition to the left, with a six-pane fixed window beneath it.

Inside, the primary range of Bryn reveals two visible cruck pairs with smoke-blackening. It has pegged collars and purlins. Beneath the southernmost bay, there is a rubble basement on the downhill side that contains a fine ceiling, likely from the mid or third quarter of the 16th century, featuring central cross beams and well-scantled joists, all with wide chamfers and broach stops. There is a boarded door and a blocked window to the right, with formerly stepped access from above.

Local climate

Tynllan 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 39 freeze-thaw cycles a year, more than 74% of listed buildings. Of these, 21 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.

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Nearby listed buildings

  1. Bryn Grade II 10 m
  2. Parish Church of St Illtyd including churchyard walls and gatepiers Grade II* 26 m
  3. Tan Llan Grade II 121 m
  4. The Toll House Grade II 121 m
  5. Coach House and Stable Block at Tan Llan Grade II 151 m
  6. Awelon Grade II 157 m
  7. Pont Llanelltyd Grade II* 205 m
  8. The Old Post Office Grade II 259 m
  9. Pont Wnin Grade II 312 m
  10. Former Domestic Range to the S of Ty Fanner Grade II 332 m