Ysgol Gymraeg Bro Allta Central Street Ystrad Mynach Hengoed CF82 7XQ Data via plota.co.uk

25/0843/NMA - Non-Material Amendments Approved

Proposal

Seek approval of a non-material amendment to planning consent (Demolish existing demountable classrooms and external stores, and erect a two storey extension with single storey entrance link to create 4 classrooms with ancillary accommodation, together with single storey toilet block extension to rear of existing building, re-modelling on site car parking and playgrounds, and associated landscaping) to move three sapling trees in the main playground and re-locate within the school grounds Data via plota.co.uk

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View original council record ↗Last checked 7 Oct 2026, 19:42

Street View

Application progress

✓

Received

27 Nov 2025

✓

Consultation

5 Jan 2026

✓

Approved

5 Mar 2026

Approved on 5 Mar 2026 · Delegated · Last checked 7 Oct 2026

Documents 6

Site constraints 3

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.

Not affected

No listed building at the site · No scheduled monument at the site

Checked on 7 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.

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