57 Celyn Avenue Cyncoed Cardiff CF23 6EJ Data via plota.co.uk
Proposal
Single storey rear extension, front porch extension, front and rear dormer roof extension, provision of additional driveway space and associated external alterations. Data via plota.co.uk
Application progress
Approved on 22 May 2026 · Chair (1- 5 Reps) · Last checked 7 Oct 2026
Documents 12
Decision & officer reports 2
Statements & assessments 2
Plans & drawings 6
Application forms 1
Other documents 1
Site constraints 2
Checked on 7 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 2
Last sold for £490,000 in October 2025. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in January 2022, the latest held for this property. The building may have changed since. View the certificate
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Proposed hip to gable, dormer loft conversion with addition of rooflights
57 Celyn Avenue Cyncoed Cardiff CF23 6EJ
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5 Llandennis Green Cyncoed Cardiff CF23 6JX
Proposed rear single storey extension
Important details
- Council
- Cardiff
- Application type
- Householder Planning Permission
- Postcode
- CF23 6EJ
- Received
- 25 Nov 2025
- Validated
- 25 Nov 2025
- Ward
- CYNCOED
- Case officer
- Show
- Target decision
- 27 May 2026
- Decision
- Permission Granted
- Decision date
- 22 May 2026
- Decision level
- Chair (1- 5 Reps)
- Applicant
- Show
- Agent
- KnK Design Studio Ltd
How this decision compares
Decided in 178 days from validation, 129 days slower than Cardiff's median of 49 for extensions. Approved, as 94% of extensions here are.
Plota live figures for extensions decided by Cardiff in the last twelve months, from validation. Cardiff decision record →
Public comments
No public comments yet.
7 neighbours consulted · Last counted 7 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14516807
- Planning Portal ref
- PP-14516807
- Neighbours
- 30 Apr 2026
- Consultation
- 27 Nov 2025
- Comments by
- 14 May 2026
- Env. assessment
- No
Historical activity at this location
20 nearby applications on record - archival context, not part of the live application.
Nearby activity
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.
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57 Celyn Avenue Cyncoed Cardiff CF23 6EJ
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