Ty Dderwen is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 3 June 1964. House, shop.
Ty Dderwen
- WRENN ID
- tattered-merlon-grove
- Grade
- II
- Local Planning Authority
- Ceredigion
- Constituency
- Ceredigion Preseli MP: Ben Lake (PC)
- Country
- Wales
- Date first listed
- 3 June 1964
- Type
- House, shop
- Address
- Ty Dderwen, Oakford / Derwen-Gam, Henfynyw
- OS grid reference
- SN 452 580
- Coordinates
- 52.19862, -4.26616
- Source
- Cadw listing
Description
Ty Dderwen and Rhydgwinllanau is a two-storey building constructed from rubble stone, featuring a slate roof with bracketed eaves and three stone stacks. The house, known as Rhydgwinllanau, has three windows on the upper floor with 12-pane hornless sash windows and a central arched six-panel door topped with a radiating bar fanlight. The door is accessed by four slate steps, and there are three basement windows with stone voussoirs. The shop, referred to as Ty Dderwen, has two similar upper windows and an attractive shopfront below. This includes a six-panel door with a large overlight and double marginal glazing bars, situated between two fixed large nine-pane windows, all beneath a timber lintel.
Local climate
Ty Dderwen sits in one of the wettest parts of the UK, with an average of 1,240 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 93% of listed buildings.
It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 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 — 8 transactions since 1997
- No related consent applications matched
- 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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