Hotel Port Dinorwic, PLAS DINORWIC Ffordd Siabod, Y Felinheli, Gwynedd, LL56 4XA Data via plota.co.uk

C25/0589/20/TC - Lawful Development Certificate Existing/Proposed Refused

Proposal

Cais tystysgrif cyfreithlon er mwyn cadarnhau bod caniatâd i godi 8 tŷ ar y safle yn fyw. Legal certificate to confirm that the permission to build 8 houses on the site is live. Data via plota.co.uk

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View original council record ↗Last checked 19 Oct 2026, 13:48

Street View

Application progress

✓

Received

18 Aug 2025

✗

Refused

30 Apr 2026

✓

Appeal allowed

24 Sept 2026

Refused on 30 Apr 2026 · Dirprwyedig / Delegated · Last checked 19 Oct 2026

Documents 9

Site constraints 3

Special area of conservation 135 m away: Y Fenai a Bae Conwy / Menai Strait and Conwy Bay

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.

Radon affected area, class 6

An estimated 30% or more 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

Registered park or garden 201 m away: Vaynol.

Not affected

Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 17 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 area1,339 m² (14,413 sq ft)

Energy ratingB (asset rating 42)

UseHotels

HeatingHeating and Natural Ventilation

From the energy performance certificate lodged in July 2026, 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: Gwynedd
Application type: Lawful Development Certificate Existing/Proposed
Postcode: LL56 4XA
Received: 18 Aug 2025
Validated: 18 Aug 2025
Ward: Bethel a'r Felinheli
Parish: Felinheli
Case officer: Show
Target decision: 13 Oct 2025
Decision: Refused
Decision date: 30 Apr 2026
Decision level: Dirprwyedig / Delegated
Appeal: Allowed · 24 Sept 2026 · Written Representations · Inspectorate case 6009837 ↗
Applicant: Show
Agent: DEWIS architecture

Consultation & key dates

Comments by: 29 Sept 2025
Statutory expiry: 13 Oct 2025

Historical activity at this location

3 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2023 Approved

Felinheli Marina, Felinheli, LL56 4JN

Tocio ywen sy'n destun Gorchymyn Gwarchod Coed Works to yew tree that is subject of a Tre…

C23/0379/20/CC 26 Jun 2023

2019 Approved

43, Ffordd Garnedd, Y Felinheli, LL564QY

Estyniad i'r ffenestr gromen presennol / Extension to existing dormer window

C19/0555/20/LL 26 Jul 2019

2016 Approved

Hotel Port Dinorwic, Ffordd Siabod, Y Felinheli, Gwynedd, LL56 4XA

Torri coed sy'n destun gorchymyn gwarchod coed gan gynnwys 2 sycamorwydden a 4 eucalypus…

C16/0127/20/CC 11 Mar 2016

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.