46 Duffryn Avenue Cyncoed Cardiff CF23 6JL Data via plota.co.uk

26/01855/CLPUD - Cert of Lawfulness Proposed (s192) Approved

Proposal

Proposed hip to gable loft conversion Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
3 Sept 2026
✓
Approved
22 Sept 2026

Approved on 22 Sept 2026 · Delegated to Group Leader · Last checked 24 Sept 2026

Site constraints 2

Local nature reserve 228 m away: Nant Fawr Corridor
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Also on the record
Radon affected area, class 3.
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 £505,000 in January 2021. Semi-detached house, freehold.

7 January 2021£505,000

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

Building

Floor area122 m² (1,313 sq ft)
Energy ratingD (66 out of 100), could reach C
PropertySemi-detached house, 6 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, no insulation (assumed)

From the energy performance certificate lodged in August 2020, 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
Cert of Lawfulness Proposed (s192)
Postcode
CF23 6JL
Received
3 Sept 2026
Validated
3 Sept 2026
Ward
CYNCOED
Case officer
Show
Decision
Permission Granted
Decision date
22 Sept 2026
Decision level
Delegated to Group Leader
Applicant
Show

How this decision compares

Decided in 19 days from validation, 31 days faster than Cardiff's median of 50 for extensions. Approved, as 94% of extensions here are.

68%decided within 8 weeks
94%approved
650decided 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.

Last counted 24 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15201425
Planning Portal ref
PP-15201425
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.