Brynderw is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 10 April 2000. House. 2 related planning applications.
Brynderw
- WRENN ID
- graven-baluster-storm
- 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
- House
- Address
- Brynderw, 12 Heol Tan-Y-Bryn, Abergynolwyn, Tywyn, Llanfihangel-Y-Pennant, Gwynedd, LL36 9UY
- OS grid reference
- SH 678 069
- Coordinates
- 52.64423, -3.9547
- Source
- Cadw listing
Description
Brynderw comprises a range of twelve houses built in the 18th century, located on Heol Tan-y-bryn, Abergynolwyn. The houses are constructed from irregular coursed slate rubble, with slate roofs featuring red roll clayware ridges, deep eaves, and verges. Each house is two storeys high and has a double-depth plan with a lateral passage leading to the entrance. They each have a four-panelled front door with raised mouldings and a narrow overlight, set beneath flush stone lintels above the ground floor openings. Sixteen-pane unhorned sash windows are present on both floors, with the upper-floor windows being smaller and narrower. Chimneys are grouped along the party walls between the houses. A regular two-storey slated service wing extends to the rear, with whitewashed sides and a slate roof with red roll ridges. Lean-to additions are also present at the rear. One of the houses has a four-panelled door with raised mouldings, the upper panels glazed.
Local climate
Brynderw 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 1 transaction since 2011
- Related listed building consents — 2 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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