20 Dorchester Avenue Penylan Cardiff CF23 9BR Data via plota.co.uk
Proposal
Retrospective permission for proposed loft dormer and side gable extension and installation of an air conditioning unit. Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. Plota predicted a decision soon after comments close on 8 Oct 2026; it is now day 77. Comments are open until 8 Oct 2026.
Comment on this application ↗Documents 1
Application forms 1
Site constraints 2
Checked on 24 September 2026. Historic England, the Environment Agency, Natural England 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 £397,950 in September 2016. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
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Important details
Decision outlook
Day 77, past the statutory target. 87% of extensions in Cardiff are decided within thirteen weeks, which runs to 19 Oct 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 2 Oct 2026.
Plota live figures for extensions decided by Cardiff in the last twelve months, from validation. Cardiff decision record →
Public comments
4 neighbours consulted · Last counted 2 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15096011
- Neighbours
- 28 Sept 2026
- Consultation
- 25 Sept 2026
- Comments by
- 8 Oct 2026
- Env. assessment
- No
Historical activity at this location
17 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
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20 Dorchester Avenue Penylan Cardiff CF23 9BR
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