Nos. 29 & 31 Lon Isa is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 30 November 2001. Semi-detached houses.
Nos. 29 & 31 Lon Isa
- WRENN ID
- quartered-stone-ash
- Grade
- II
- Local Planning Authority
- Cardiff
- Constituency
- Cardiff North MP: Anna McMorrin (Lab)
- Country
- Wales
- Date first listed
- 30 November 2001
- Type
- Semi-detached houses
- Address
- Nos. 29 & 31 Lon Isa, Rhiwbina Garden Village (N), Rhiwbina
- OS grid reference
- ST 157 811
- Coordinates
- 51.52306, -3.21619
- Source
- Cadw listing
Description
Nos. 29 and 31 Lon Isa are a pair of semi-detached houses built in the Rhiwbina Type 8a style. They are two storeys high and feature roughcast render that has been painted. The houses have hipped slate roofs and brick chimneys located at the centre and ends. The front of the houses has four windows, with the end bays being advanced and topped with hipped roofs. The outer bays on the first floor contain tripartite sashes with 12-pane windows, which are flanked by narrow sashes, while the other windows are 16-pane sashes. The doorways are situated in the end walls and are covered by flat hoods, with a small-pane sash window located on the upper floor.
Local climate
Nos. 29 & 31 Lon Isa 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
- 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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