Trengrove House is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 22 August 1975. Corner house.
Trengrove House
- WRENN ID
- roaming-rubblework-dock
- Grade
- II
- Local Planning Authority
- Merthyr Tydfil
- Constituency
- Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
- Country
- Wales
- Date first listed
- 22 August 1975
- Type
- Corner house
- Address
- Trengrove House, 15 Castle Street, Town
- OS grid reference
- SO 050 063
- Coordinates
- 51.74782, -3.37665
- Source
- Cadw listing
Description
Trengrove House is a mid-19th century corner house featuring a three-bay front finished in pebbledash and topped with a slate roof that has stacks at the right end. The central bay is distinguished by giant pilasters and a bargeboarded cross-gable, along with a band course and plinth. The first floor has sash windows, while the ground floor has three-light sashes with glazing bars. The entrance is marked by a flat-arched doorcase with pilasters in antis, leading to a four-panel door and a plain fanlight.
The gable end facing Upper Thomas Street has a pediment and is adjacent to No 43 on the left. It includes a flat-pointed window at the apex and features sash windows, one of which is a tripartite design with glazing bars below.
Local climate
Trengrove House 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 87% of listed buildings.
It experiences an average of 44 freeze-thaw cycles a year, more than 85% of listed buildings. Of these, 22 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
- 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
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