31 Penllwyn Estate Llanelly Hill Sir Fynwy NP7 0PY Data via plota.co.uk

26/24606/FUL - Full Application Approved

Proposal

Proposed two storey side extension to create home office and larger kitchen dining room with associated works. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
1 May 2026
✓
Approved
4 Aug 2026

Approved on 4 Aug 2026 · Delegated Decision · Last checked 17 Aug 2026

Documents 22

All documents on the council site ↗

Site constraints 6

Nutrient neutrality catchment: River Usk
New homes and overnight accommodation must show nutrient neutrality before approval.
Natural England advice: extra wastewater in these catchments harms protected habitats, so schemes must offset their nutrient load, usually through credits.
Brecon Beacons National Park
The park authority decides applications here. Great weight to conserving the landscape; major development restricted.
Landscape, scenic beauty and wildlife carry great weight, and major development is only allowed in exceptional circumstances.
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 ↗
SSSI about 102 m away: Cwm Clydach
Natural England may need consulting, depending on what is proposed.
Sites of special scientific interest are the best wildlife and geological sites in the country. Development likely to harm one is rarely permitted.
Special area of conservation about 249 m away: Cwm Clydach Woodlands / Coedydd Cwm Clydach
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
Coalfield, development low risk area.
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Mining Remediation Authority, 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 £122,000 in October 2020. Terraced house, freehold.

9 October 2020£122,000

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

Building

Floor area82 m² (883 sq ft)
Energy ratingE (53 out of 100), could reach D
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 June 2015, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Application type
Full Application
Postcode
NP7 0PY
Received
1 May 2026
Validated
1 May 2026
Case officer
Show
Target decision
4 Aug 2026
Decision
Permit
Decision date
4 Aug 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Griffiths Design Limited

How this decision compares

Decided in 95 days from validation, 38 days slower than Brecon Beacons's median of 57 for extensions. Approved, as 88% of extensions here are.

47%decided within 8 weeks
88%approved
83decided in the last year

Plota live figures for extensions decided by Brecon Beacons in the last twelve months, from validation. Brecon Beacons decision record →

Public comments

No public comments yet.

3 neighbours consulted · Last counted 17 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Comments by
2 Jun 2026
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.

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.