Derwen, Talerddig Road, Llanerfyl, Welshpool, SY21 0EG Data via plota.co.uk

P/26/0780/FUL - Full planning permission Under Consultation

Proposal

Erection of side extension and formation of new vehicular access Data via plota.co.uk

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View original council record ↗Last checked 28 Oct 2026, 02:06

Application progress

✓

Received

5 Aug 2026

✓

Validated

25 Aug 2026

Decision

Target date was 20 Oct 2026

Under consideration

No decision has been issued yet. Plota predicts a decision by 10 Nov 2026, from Powys's recent extensions.

Documents 15

Statements & assessments 2

PDF Drainage Statement.pdf Supporting documents · 5 Aug 2026 View ↗ PDF Planning Statement.pdf Supporting documents · 5 Aug 2026 View ↗

Plans & drawings 12

Application forms 1

PDF Application Form Redacted Form · 5 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 4

Agricultural land, grade 3b

Not best and most versatile land (grades 1, 2 and 3a). Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. A site survey can differ.

Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.

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

7 listed buildings within 150 m of the postcode pin; National infrastructure project about 1587 m away: Mid Wales Electricity Connection (N Grid).

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 Planning Inspectorate, 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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Important details

Council: Powys
Application type: Full planning permission
Postcode: SY21 0EG
Received: 5 Aug 2026
Validated: 25 Aug 2026
Case officer: Show
Target decision: 20 Oct 2026
Decision level: Delegated Decision
Applicant: Show
Agent: Show

Decision outlook

Day 65, past the statutory target. 74% of extensions in Powys are decided within thirteen weeks, which runs to 24 Nov 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 27 Oct 2026.

predicted

Day 659 days past the 56-day target

41%decided within 8 weeks

81%approved

169decided in the last year

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