36 Windermere Avenue Cyncoed Cardiff CF23 5PR Data via plota.co.uk

26/01688/CLPUD - Cert of Lawfulness Proposed (s192) Approved

Proposal

Hip-to-gable roof extension, rear dormer roof extension and addition of front rooflights Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
7 Aug 2026
✓
Approved
13 Aug 2026

Approved on 13 Aug 2026 · Delegated to Group Leader · Last checked 18 Aug 2026

Site constraints 3

Registered park or garden 75 m away: Roath Park
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Conservation area 22 m away: Roath Park Lake and Gardens
The edge of the area; work outside it can still affect its setting.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Also on the record
Radon affected area, class 4.
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 2

Last sold for £470,000 in April 2026. Semi-detached house, freehold.

16 April 2026£470,000
5 January 2007£280,000

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

Building

Floor area114 m² (1,227 sq ft)
Energy ratingC (71 out of 100)
PropertySemi-detached house, 6 habitable rooms
Built1967 to 1975
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, no insulation (assumed)

From the energy performance certificate lodged in September 2025, 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 5PR
Received
7 Aug 2026
Validated
7 Aug 2026
Ward
CYNCOED
Case officer
Show
Decision
Permission Granted
Decision date
13 Aug 2026
Decision level
Delegated to Group Leader
Applicant
Show
Agent
Brennan Architectural Design

How this decision compares

Decided in 6 days from validation, 43 days faster than Cardiff's median of 49 for extensions. Approved, as 94% of extensions here are.

68%decided within 8 weeks
94%approved
602decided 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 18 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15142635
Planning Portal ref
PP-15142635
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.