Nos. 41 & 43 Lon Isa is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 30 November 2001. House. 4 related planning applications.

Nos. 41 & 43 Lon Isa

WRENN ID
night-dormer-birch
Grade
II
Local Planning Authority
Cardiff
Constituency
Cardiff North MP: Anna McMorrin (Lab)
Country
Wales
Date first listed
30 November 2001
Type
House
Address
Nos. 41 & 43 Lon Isa, Rhiwbina Garden Village (N), Rhiwbina, CF14 6EE
OS grid reference
ST 156 811
Coordinates
51.5229, -3.21696
Source
Cadw listing

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

Description

Nos. 41 and 43 Lon Isa are a pair of semi-detached houses, classified as Rhiwbina Type 1, built in the 20th century. They are two storeys high, constructed of brown brick, and feature a hipped slate roof with a central brick chimney and tall brick stacks at both ends. The front of the pair has four windows. The central two bays on each floor have tripartite small-pane sash windows, with a central 12-pane sash flanked by narrow sashes, and tile voussoirs on the ground floor. The outer bays contain 16-pane sash windows on the upper floors. On the ground floor, the outer bays have splayed bay windows, each with a small-pane sash window on each face. The entrances are located on the sides, with doorways beneath flat hoods, and there are a pair of windows towards the rear on the upper floor.

Local climate

Nos. 41 & 43 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
  • Sale history — 1 transaction since 2002
  • Related listed building consents — 4 applications
  • 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. Nos. 45 & 47 Lon Isa Grade II 18 m
  2. Nos. 37 & 39 Lon Isa Grade II 19 m
  3. Nos. 30 & 32 Lon Isa Grade II 37 m
  4. Nos. 34 & 36 Lon Isa Grade II 37 m
  5. Nos. 49 & 51 Lon Isa Grade II 38 m
  6. Nos. 33 & 35 Lon Isa Grade II 38 m
  7. Nos. 38 & 40 Lon Isa Grade II 47 m
  8. Nos. 26 & 28 Lon Isa Grade II 48 m
  9. Nos. 53 & 55 Lon Isa Grade II 55 m
  10. Nos. 29 & 31 Lon Isa Grade II 56 m