9 Caer Wenallt Rhiwbina Cardiff CF14 7HN Data via plota.co.uk

26/01864/HSE - Householder Planning Permission Registered

Proposal

Two storey rear extension on top of existing, and side second storey extension on stilts, with internal alterations. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
4 Sept 2026
✓
Consultation
15 Sept 2026
Decision
Expected by 30 Oct 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 16 Oct 2026 and 28 Oct 2026, from Cardiff's recent extensions.

The consultation period closed on 6 Oct 2026.

Site constraints 1

Radon affected area, class 5
An estimated 10 to 30% of homes reach the radon action level. Indicative for the 1 km square, which takes the highest class found in it; a radon test gives the answer for a building.
From the British Geological Survey and UK Health Security Agency indicative atlas. Under building regulations, as the BRE guide BR 211 (2023) sets out, new buildings and extensions need basic radon protection from class 3 in England and Wales and from class 2 in Scotland, and full protection from class 5. The class at the site itself, from the detailed BGS map, decides which.
UKHSA radon ↗
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Sales history 1

Last sold for £270,000 in February 2019. Semi-detached house, freehold.

20 February 2019£270,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area112 m² (1,206 sq ft)
Energy ratingD (66 out of 100), could reach B
PropertySemi-detached house, 5 habitable rooms
Built1967 to 1975
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in October 2018, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Cardiff
Application type
Householder Planning Permission
Postcode
CF14 7HN
Received
4 Sept 2026
Validated
4 Sept 2026
Ward
RHIWBINA
Case officer
Show
Applicant
Show
Agent
FRANKS AND TOMS ARCHITECTS LIMITED

Decision outlook

Day 35 of the 56-day target. Cardiff usually decides extensions by day 49.

Day 3521 days to the 56-day target
69%decided within 8 weeks
94%approved
574decided in the last year

Plota live figures for extensions decided by Cardiff in the last twelve months, from validation. Cardiff decision record →

Public comments

No public comments yet.

5 neighbours consulted · Last counted 7 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15203890
Planning Portal ref
PP-15203890
Neighbours
15 Sept 2026
Consultation
15 Sept 2026
Comments by
6 Oct 2026
Site or press notice
15 Sept 2026
Env. assessment
No

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.