Isfryn, including railings to the front is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 10 April 2000. Row of houses.

Isfryn, including railings to the front

WRENN ID
winding-chancel-saffron
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
10 April 2000
Type
Row of houses
Address
Isfryn, including railings to the front, 8a Heol Tan-Y-Bryn, Abergynolwyn, Tywyn, Llanfihangel-Y-Pennant, Gwynedd
OS grid reference
SH 678 069
Coordinates
52.64385, -3.95498
Source
Cadw listing

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

Description

Isfryn is a row of four houses numbered 7A to 10A on Heol Tan-y-bryn in Abergynolwyn. These houses were built from slate rubble and feature slate roofs. They are two storeys high, with attics and cellars, and have a double-depth plan that includes two and three bays. The doors have three raised-moulded panels and are set in staff-moulded frames, topped with deep fanlights. The ground and first floors have twelve-paned sash windows, while the attic at the rear has six-pane windows. All openings are framed with deep stone lintels, and chimney stacks with outsetting heads are located on the party walls.

Number 8A has two window bays and remains largely in its original external condition, featuring unhorned sash windows, railings, and a gate at the front. There is also a single-storey outbuilding at right angles to the rear.

Local climate

Isfryn, including railings to the front 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 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 10 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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  • Sale history — 1 transaction since 2024
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  • 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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  1. 9A Heol Tan-y-bryn, including railings to front Grade II 4 m
  2. 7A Heol Tan-y-bryn, including railings to front Grade II 6 m
  3. Grail Retreat Grade II 11 m
  4. 6A Heol Tan-y-bryn Grade II 13 m
  5. 3 Heol Tan-y-bryn Grade II 17 m
  6. 2 Heol Tan-y-bryn Grade II 18 m
  7. 4 Heol Tan-y-bryn Grade II 18 m
  8. 5A Heol Tan-y-bryn Grade II 19 m
  9. 5 Heol Tan-y-bryn Grade II 19 m
  10. 6 Heol Tan-y-bryn Grade II 21 m