1 Tyddyn Iolyn is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 24 May 2000. House. 1 related planning application.
1 Tyddyn Iolyn
- WRENN ID
- spare-quartz-russet
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 24 May 2000
- Type
- House
- Address
- 1 Tyddyn Iolyn, Glasinfryn, Bangor, Llandygai, LL57 4AB
- OS grid reference
- SH 600 697
- Coordinates
- 53.20648, -4.09681
- Source
- Cadw listing
Description
1 Tyddyn Iolyn is a small two-storey house designed in a simple Tudor Gothic style. The exterior features painted rubblestone and a slate roof with deep overhanging verges and carved ends on the purlins. The symmetrical front of the house includes three-light, 18-paned casement windows with strong mullions and slate cills, which flank a lean-to porch that covers the central doorway. There are gabled eaves dormers with single-light casements that have single horizontal glazing bars and slate cills. The house also has prominent integral end stacks with stone bases and paired, rebated purple brick shafts topped with moulded capping. The interior was not inspected during the survey.
Local climate
1 Tyddyn Iolyn sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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