Clenennau is a Grade II* listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 30 March 1999. A N/A House.
Clenennau
- WRENN ID
- grey-flint-willow
- Grade
- II*
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 30 March 1999
- Type
- House
- Period
- N/A
- Address
- Clenennau, Golan, Dolbenmaen, Gwynedd
- OS grid reference
- SH 532 424
- Coordinates
- 52.95933, -4.18686
- Source
- Cadw listing
Description
Clenennau is a 19th-century building constructed from rubble stonework with slated roofs, designed in an 'L'-plan over two storeys. The front, which was rebuilt around 1880, features a symmetrical 3-bay layout with a central 4-panelled door and a plain overlight, flanked by 3-light timber mullioned and transomed windows on both floors. The building has gable stacks, and the first bay of the rear wing, which connects to the main range, is an addition from the mid-17th century, likely built by Sir John Owen. This rear wing includes a door facing the farmyard and small paned timber windows, with similar windows located on the north gable end near the outer corners.
The main front range underwent refurbishment in the late 19th century, which included the addition of corniced rooms on both floors. The roof consists of five bays and retains features from the late 15th century, including two central arched braced collar beam trusses with raking struts supporting substantial principal rafters, with joints that are four times pegged and soffits that are chamfered, indicating three open bays at the center. The two levels of purlins are splay scarfed, although the southern end truss has been replaced. There are no signs of smoke blackening, suggesting that this area may have served as a parlour wing. The main range itself comprises two bays, featuring two pegged collar trusses with principals that have a blade-like section. An additional third bay is found beyond a stone wall, which contains the stair and cross passage doors at the junction of the two ranges.
Local climate
Clenennau 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.
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- 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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