10 Upper Colliers Row is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 22 August 1975. Cottage.

10 Upper Colliers Row

WRENN ID
under-stone-rush
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
Cottage
Address
10 Upper Colliers Row, Ynysfach, Cyfarthfa
OS grid reference
SO 040 060
Coordinates
51.74502, -3.39157
Source
Cadw listing

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

Description

10 Upper Colliers Row is one of a row of mostly altered two-storey stone cottages featuring slate roofs. Some stone chimneys still exist, and a few original window openings may remain unchanged in size. Catslide roofs are generally visible at the rear, with many having been extended. Several cottages have been joined together, and there are gardens in front with some remaining stone walls. To the south is an area of irregular enclosures or allotments associated with the cottage row.

No 10 has been altered to match No 9, featuring 20th-century render and wide late 20th-century windows on each floor to the left, along with a late 20th-century porch to the right. It shares a stone stack with No 11.

The interior is not available for inspection, but it is said to have joisted floors, a fireplace to the right, and a winding stone staircase adjacent.

Local climate

10 Upper Colliers Row 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 1 transaction since 2021
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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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