4 Long Street, Gerlan, Bethesda, Bangor, Gwynedd, LL57 3SY Data via plota.co.uk

C26/0007/13/DT - Householder Planning Approved

Proposal

Codi estyniad deulawr ar gefn yr eiddo Erection of a two-storey extension at the rear of the property Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
8 Jan 2026
✓
Validated
5 Feb 2026
✓
Approved
15 May 2026

Approved on 15 May 2026 · Dirprwyedig / Delegated · Last checked 1 Oct 2026

Site constraints 3

World heritage site: World Heritage Site
Nationally designated heritage. Its significance and setting carry great weight.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
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
National park about 486 m away: Snowdonia.
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 £62,000 in May 2021. Terraced house, freehold.

27 May 2021£62,000
8 October 2010£85,500

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

Building

Floor area64 m² (689 sq ft)
Energy ratingD (63 out of 100), could reach B
PropertySemi-detached house, 4 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsGranite or whinstone, as built, no insulation (assumed)

From the energy performance certificate lodged in September 2020, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

Work with planning data?

Every application in Gwynedd - and every UK council - as a live feed, an API, or a bulk CSV export.

About Plota's data service

Important details

Council
Gwynedd
Application type
Householder Planning
Postcode
LL57 3SY
Received
8 Jan 2026
Validated
5 Feb 2026
Ward
Gerlan
Parish
Bethesda
Case officer
Show
Target decision
20 May 2026
Decision
Approved with Conditions
Decision date
15 May 2026
Decision level
Dirprwyedig / Delegated
Applicant
Show

How this decision compares

Decided in 99 days from validation, 14 days slower than Gwynedd's median of 85 for extensions. Approved, as 94% of extensions here are.

28%decided within 8 weeks
94%approved
248decided in the last year

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

Consultation & key dates

Comments by
4 Mar 2026
Statutory expiry
20 May 2026

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.