2 Pentywyn Heights Deganwy LL31 9DT Data via plota.co.uk

0/53555 - Full Approved

Proposal

Rear single storey extension and alterations Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
14 Jul 2026
✓
Validated
23 Jul 2026
✓
Approved
17 Sept 2026

Approved on 17 Sept 2026 · Case Officer · Last checked 2 Oct 2026

Site constraints 2

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 about 224 m away: Chwareli a Glaswelltir Degannwy.
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 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 2

Last sold for £447,000 in June 2024. Detached house, freehold.

More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.

20 June 2024£447,000
11 December 2008£282,500Flat or maisonette, leasehold, new build

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

Building

Floor area181 m² (1,948 sq ft)
Energy ratingC (78 out of 100), could reach B
PropertyDetached house, 8 habitable rooms
Built2007 to 2011
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, insulated (assumed)

From the energy performance certificate lodged in November 2019, 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

Council
Conwy
Application type
Full
Postcode
LL31 9DT
Received
14 Jul 2026
Validated
23 Jul 2026
Ward
Deganwy
Parish
Cyngor Tref Conwy Town Council
Case officer
Show
Decision
Approved With Conditions
Decision date
17 Sept 2026
Decision level
Case Officer

How this decision compares

Decided in 56 days from validation, 11 days slower than Conwy's median of 45 for extensions. Approved, as 87% of extensions here are.

76%decided within 8 weeks
87%approved
149decided in the last year

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

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.