Ty Felin (Mill House) is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 1 April 1974. House. 6 related planning applications.
Ty Felin (Mill House)
- WRENN ID
- ruined-loft-mist
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 1 April 1974
- Type
- House
- Address
- Ty Felin (Mill House), Tremadog, Porthmadog, LL49 9RG
- OS grid reference
- SH 564 403
- Coordinates
- 52.94129, -4.13834
- Source
- Cadw listing
Description
Ty Felin (Mill House) is a two-story, two-window house likely dating to the 18th century, built as a reflected pair. The exterior is constructed of coursed rubble with a renewed slate roof and stone end stacks. Openings are topped with stone lintels. Replacement doors are centrally positioned beneath a lean-to canopy. All windows are replacements, but fitted into original openings. A one-story addition, with rendered walls and a slate roof, is set back to the right. The left gable end incorporates a section of wall built with large, unworked boulders. The rear elevation has been whitened and features four small windows in the lower storey and two upper-storey windows, all replacements within original openings. The interior features mirrored floor plans with two staircases and interconnecting doors.
Local climate
Ty Felin (Mill House) sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% of listed buildings. Of these, 15 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 — 1 transaction since 2009
- Related listed building consents — 6 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.
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