20 Heol Booker Whitchurch Cardiff CF14 2DG Data via plota.co.uk

26/01567/HSE - Householder Planning Permission Approved

Proposal

Rear Double Storey & Single Storey Extension and New Gable end Roof. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
27 Jul 2026
✓
Consultation
5 Aug 2026
✓
Approved
21 Sept 2026

Approved on 21 Sept 2026 · Delegated to Group Leader · Last checked 24 Sept 2026

Site constraints 4

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 ↗
Registered park or garden 81 m away: Whitchurch Hospital
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.
Also on the record
Local nature reserve 320 m away: Glamorganshire Canal; SSSI 320 m away: Glamorgan Canal / Long Wood.
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.

Building

Floor area96 m² (1,033 sq ft)
Energy ratingD (67 out of 100), could reach B
PropertySemi-detached house, 4 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, no insulation (assumed)

From the energy performance certificate lodged in March 2025, the latest held for this property. The building may have changed since. View the certificate

Work with planning data?

Every application in Cardiff - and every UK council - as a live feed, an API, or a bulk CSV export.

About Plota's data service

Important details

Council
Cardiff
Application type
Householder Planning Permission
Postcode
CF14 2DG
Received
27 Jul 2026
Validated
27 Jul 2026
Ward
WHITCHURCH AND TONGWYNLAIS
Case officer
Show
Decision
Permission Granted
Decision date
21 Sept 2026
Decision level
Delegated to Group Leader
Applicant
Show

How this decision compares

Decided in 56 days from validation, 7 days slower 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.

7 neighbours consulted · Last counted 24 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15114597
Planning Portal ref
PP-15114597
Neighbours
5 Aug 2026
Consultation
5 Aug 2026
Comments by
26 Aug 2026
Env. assessment
No

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.