Nos. 17 & 18 Y Groes is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 30 November 2001. Houses.

Nos. 17 & 18 Y Groes

WRENN ID
grim-postern-spring
Grade
II
Local Planning Authority
Cardiff
Constituency
Cardiff North MP: Anna McMorrin (Lab)
Country
Wales
Date first listed
30 November 2001
Type
Houses
Address
Nos. 17 & 18 Y Groes, Rhiwbina Garden Village (Centre), Rhiwbina
OS grid reference
ST 159 810
Coordinates
51.52225, -3.21341
Source
Cadw listing

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

Description

Nos. 17 and 18 Y Groes are a pair of semi-detached houses. The upper storey is roughcast rendered, while the ground floor features snecked rockfaced stone with ashlar quoins. The roof is part-hipped, covered with small slates, and has slightly swept eaves with kneelers. There are end and centre ridge stacks. The front has a plan with twin hipped gables and a cross wing at the rear. The windows are small-pane casements, with 2-light windows on the first floor, which has a 4-window range, and 3-light windows on the ground floor. There are narrow doorways at both ends and main side doorways that have hoods. No. 17 includes a lean-to at the side.

Local climate

Nos. 17 & 18 Y Groes sits in a wetter-than-average part of the UK, with an average of 1,080 mm of rain a year. This makes it wetter than 86% 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 22 freeze-thaw cycles a year, fewer than 77% of listed buildings. Of these, 8 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
  • Sale history — 5 transactions since 2001
  • 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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Nearby listed buildings

  1. The Wendy House Grade II 30 m
  2. Nos. 15 & 16 Y Groes Grade II 31 m
  3. Nos. 8 & 10 Lon-y-dail Grade II 53 m
  4. Nos. 4&6 Lon-y-dail Grade II 59 m
  5. Nos. 12 & 14 Lon-y-dail Grade II 60 m
  6. No. 26 Pen-y-dre and No. 2 Lon-y-dail Grade II 71 m
  7. Nos. 9 & 10 Y Groes Grade II 80 m
  8. Nos. 16 & 18 Lon-y-dail Grade II 83 m
  9. Nos. 7 & 8 Y Groes Grade II 83 m
  10. Nos. 5 & 6 Y Groes Grade II 84 m