Aris, 4 Pen-y-Bryn, Harlech. LL46 2SL Data via plota.co.uk

NP5/61/476A - Full Approved

Proposal

Erection of single storey extension to front elevation to replace existing conservatory, replacement of existing rear conservatory roof, alterations to fenestration and replacement of existing flat roof over office Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
20 Apr 2026
✓
Approved
1 Jun 2026

Approved on 1 Jun 2026 · Dirprwyiedig/Delegated · Last checked 11 Jul 2026

Site constraints 32

Tree preservation orderSDdGA / SSSIACA / SACFfin Datblygu Tai / Housing Development BoundarySafle Treftadaeth y Byd (Y Lleoliad) / World Heritage Site (Setting)Safle Treftadaeth y Byd / World Heritage SiteMaes Awyr Llanbedr (Parth Diogelu) / Llanbedr Airfield (Safeguarding Zone)Tirwedd o Ddiddordeb Hanesyddol/ Landscape of Historical LandscapeSafle Adolygu Cadwraeth Ddaearegol / Geological Conservation Review SiteAwdurdod CynllunioGwarchodfa Awyr Dywyll Ryngwladol / International Dark Sky ReserveUnclassified - Restricted Local Access RoadNP5/17/52Unknown - Local RoadHarlechGwynedd48AD, TAN 5, PPW 10 para 6.4G, 30, TAN 1. TAN 2, PPW 10 para 4.22, TAN 5, PPW 10 para 6.8Ff, TAN 24, PPW 10 para 6.1DP 27; DP 26SP A; DP 1; DP 2; SP Ff; DP 8; SPG 7. TAN 24" "PPW para 6.1.20-211, TAN 10, PPW para 6.4.24-27SP A; DP 1; SP D; SPG 6
Snowdonia National Park
The park authority decides applications here. Great weight to conserving the landscape; major development restricted.
Landscape, scenic beauty and wildlife carry great weight, and major development is only allowed in exceptional circumstances.
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.
Special area of conservation 157 m away: Coedydd Derw a Safleoedd Ystlumod Meirion / Meirionnydd Oakwoods and Bat Sites
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
5 listed buildings within 150 m
Nearest: Bryn Tirion, Grade II, 48 m away · 5 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 5 with distances
Historic England ↗
SSSI 157 m away: Coed Llechwedd
Natural England may need consulting, depending on what is proposed.
Sites of special scientific interest are the best wildlife and geological sites in the country. Development likely to harm one is rarely permitted.
Conservation area 17 m away: Harlech
The edge of the area; work outside it can still affect its setting.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Tree preservation orderCouncil record
Recorded by the council for this site.
Council site ↗
SDdGA / SSSICouncil record
Recorded by the council for this site.
Council site ↗
ACA / SACCouncil record
Recorded by the council for this site.
Council site ↗
Ffin Datblygu Tai / Housing Development BoundaryCouncil record
Recorded by the council for this site.
Council site ↗
Safle Treftadaeth y Byd (Y Lleoliad) / World Heritage Site (Setting)Council record
Recorded by the council for this site.
Council site ↗
Safle Treftadaeth y Byd / World Heritage SiteCouncil record
Recorded by the council for this site.
Council site ↗
Maes Awyr Llanbedr (Parth Diogelu) / Llanbedr Airfield (Safeguarding Zone)Council record
Recorded by the council for this site.
Council site ↗
Tirwedd o Ddiddordeb Hanesyddol/ Landscape of Historical LandscapeCouncil record
Recorded by the council for this site.
Council site ↗
Safle Adolygu Cadwraeth Ddaearegol / Geological Conservation Review SiteCouncil record
Recorded by the council for this site.
Council site ↗
Awdurdod Cynllunio: APCE / Planning Authority: SNPACouncil record
Recorded by the council for this site.
Council site ↗
Gwarchodfa Awyr Dywyll Ryngwladol / International Dark Sky ReserveCouncil record
Recorded by the council for this site.
Council site ↗
Unclassified - Restricted Local Access RoadCouncil record
Recorded by the council for this site.
Council site ↗
NP5/17/52Council record
Recorded by the council for this site.
Council site ↗
Unknown - Local RoadCouncil record
Recorded by the council for this site.
Council site ↗
HarlechCouncil record
Recorded by the council for this site.
Council site ↗
Gwynedd48ACouncil record
Recorded by the council for this site.
Council site ↗
D, TAN 5, PPW 10 para 6.4Council record
Recorded by the council for this site.
Council site ↗
G, 30, TAN 1. TAN 2, PPW 10 para 4.2Council record
Recorded by the council for this site.
Council site ↗
2, TAN 5, PPW 10 para 6.8Council record
Recorded by the council for this site.
Council site ↗
Ff, TAN 24, PPW 10 para 6.1Council record
Recorded by the council for this site.
Council site ↗
DP 27; DP 26Council record
Recorded by the council for this site.
Council site ↗
SP A; DP 1; DP 2; SP Ff; DP 8; SPG 7. TAN 24" "PPW para 6.1.20-21Council record
Recorded by the council for this site.
Council site ↗
1, TAN 10, PPW para 6.4.24-27Council record
Recorded by the council for this site.
Council site ↗
SP A; DP 1; SP D; SPG 6Council record
Recorded by the council for this site.
Council site ↗
Also on the record
Scheduled monument 189 m away: Castell Harlech; Radon affected area, class 2.
Not affected
Outside flood zones 2 and 3

Checked on 6 October 2026. 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.

Building

Floor area131 m² (1,410 sq ft)
Energy ratingD (60 out of 100), could reach C
PropertyDetached house, 6 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, oil
WallsCavity wall, filled cavity

From the energy performance certificate lodged in May 2013, the latest held for this property. The building may have changed since. View the certificate

Work with planning data?

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

About Plota's data service

Important details

Council
Snowdonia
Application type
Full
Postcode
LL46 2SL
Received
20 Apr 2026
Validated
20 Apr 2026
Ward
Harlech a Llanbedr ED
Parish
Harlech
Case officer
Show
Target decision
14 Jun 2026
Decision
Permitted with conditions
Decision date
1 Jun 2026
Decision level
Dirprwyiedig/Delegated
Applicant
Show
Agent
ArkiPlan.co.uk

How this decision compares

Decided in 42 days from validation, 13 days faster than Snowdonia's median of 55 for extensions. Approved, as 95% of extensions here are.

58%decided within 8 weeks
95%approved
39decided in the last year

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

Consultation & key dates

Alt. reference
PP-14852220
Statutory expiry
12 May 2026

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

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.