Hafodty is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 4 November 1999. Building. 1 related planning application.
Hafodty
- WRENN ID
- muffled-keep-mallow
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 4 November 1999
- Type
- Building
- Address
- Hafodty, Dinorwic, Caernarfon, Llanddeiniolen, LL55 3EU
- OS grid reference
- SH 589 605
- Coordinates
- 53.12343, -4.10931
- Source
- Cadw listing
Description
Hafodty is a substantial two-story building, likely dating from the 18th century. The main section is oriented roughly north-south with its main west-facing elevation, and it is adjoined by a long, lower range set at a right angle to the east. This eastern section serves as service quarters. The exterior is predominantly rendered rubblestone, with a small area of exposed rubble towards the rear of the service range. The roofs are slate, with a hipped southern end to the main range, sloping over the attached range.
The main west-facing elevation has three bays, featuring a large full-height gable on the left, a smaller gable breaking the eaves in the centre, and a gable associated with the right-angled range on the right. Four-pane sash windows are found on the first floor and in the central ground floor bay. Large French windows with 12 panes are situated to the left and right of the ground floor. A tall integral end stack is present on the left, and a ridge stack is located to the left of the central gable.
The south-facing return of the right-angled range has three sash windows on the first floor, with six panes to the left and sixteen panes in the centre. Integral lateral stacks are visible, one with a tall stone shaft on the left and another with a stone ridge stack to the right of the centre. An integral end stack with paired and rebated brick shafts is set into the right gable end. A lower projecting gable is located between the centre and right windows, and a late 20th-century lean-to conservatory runs along the remainder of the range to the left.
The interior of the building was not accessible at the time of survey.
Local climate
Hafodty 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 95% of listed buildings.
It experiences an average of 40 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 22 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 — 3 transactions since 2002
- 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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- Bron Elidir including surrounding wall and steps to Dinorwic Slate Quarry
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- Offis Fawr (now Woodcraft Centre)
- Dinorwic Slate Quarry Workshops (Welsh Slate Museum Buildings)
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- Former Hospital and boundary walls