15 Rowan Close Nelson Treharris CF46 6EN Data via plota.co.uk

Pending 26/0673/HH

Extensions & alterations

Council

Caerphilly

Date received

5 Oct 2026

Date validated

5 Oct 2026

Postcode

CF46 6EN

Description

Erect two storey rear extension Data via plota.co.uk

Get alerts nearby Council site ↗

Last checked 8 Oct 2026, 06:54

Decision outlook

Plota predicts a decision around 27 Nov 2026, from Caerphilly's recent extensions.

Day 4 of the 56-day target. Caerphilly usually decides extensions by day 53.

prediction

Day 452 days to the 56-day target

75%decided within 8 weeks

76%approved

195decided in the last year

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

Site constraints 3

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

SSSI 313 m away: Nelson Bog; Coalfield, development low risk area.

Not affected

Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 8 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.