14 Lewis Street Treforest Pontypridd Rhondda Cynon Taf CF37 1BZ Data via plota.co.uk

26/0360/FUL - Full Application Approved

Proposal

Installation of air source heat pump to the rear of the dwelling (Amended plans received 18.08.2026) Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
27 Apr 2026
✓
Consultation
7 May 2026
✓
Validated
12 Aug 2026
✓
Approved
22 Sept 2026

Approved on 22 Sept 2026 · Delegated Decision · Last checked 23 Sept 2026

Site constraints 6

Flood zone 2, rivers and sea
Medium chance: between a 1 in 100 and 1 in 1,000 annual chance from rivers, or 1 in 200 to 1 in 1,000 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
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 ↗
Also on the record
Coalfield, development low risk area; 1 listed building within 150 m; Conservation area 90 m away: Castle Square, Treforest; Air quality management area 48 m away: Broadway AQMA.
Not affected
No scheduled monument at the site

Checked on 6 October 2026. 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 £155,000 in January 2025. Terraced house, freehold.

3 January 2025£155,000

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

Building

Floor area102 m² (1,098 sq ft)
Energy ratingC (69 out of 100), could reach B
PropertyMid-terrace house, 6 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSandstone or limestone, as built, no insulation (assumed)

From the energy performance certificate lodged in August 2024, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Rhondda
Application type
Full Application
Postcode
CF37 1BZ
Received
27 Apr 2026
Validated
12 Aug 2026
Ward
Treforest
Case officer
Show
Target decision
7 Oct 2026
Decision
Approve
Decision date
22 Sept 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Octopus Energy Services

How this decision compares

Decided in 41 days from validation, 10 days faster than Rhondda's median of 51 for extensions. Approved, as 97% of extensions here are.

77%decided within 8 weeks
97%approved
224decided in the last year

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

Public comments

No public comments yet.

6 neighbours consulted · Last counted 23 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Consultation
7 May 2026
Comments by
9 Sept 2026
Statutory expiry
7 Oct 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.

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.