11 New Castle Street is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 22 August 1975. House.
11 New Castle Street
- WRENN ID
- far-tallow-bone
- 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
- House
- Address
- 11 New Castle Street, Town
- OS grid reference
- SO 050 063
- Coordinates
- 51.74795, -3.37691
- Source
- Cadw listing
Description
This is a two-storey house located at 11 New Castle Street, featuring a two-window stucco front. On the first floor, there are two hardwood windows that imitate sash windows. The ground floor has a modern window designed to resemble a tripartite sash. To the right, there is a round-headed doorway that is offset and has plain stucco pilasters and a moulded archivolt, along with a semi-circular modern fanlight above. The door itself is modern and consists of two tall round-headed panels.
Local climate
11 New Castle Street 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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