Hen Felin Ffordd Treborth, Treborth, Bangor, Gwynedd, LL57 2RQ

1. 19 Sep 2025

   Received by Gwynedd

2. 6 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within five years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

An amendment application changes a permission that already exists. Non-material amendments cover small adjustments with no wider effect, while minor material amendments, usually made by varying a condition, allow modest design changes without a fresh application. Anything beyond that needs a new permission, so the scope here is deliberately narrow.

More on amendments applications in our guide

• Prifysgol Cymru Bangor, SCHOOL OF PLANT BIOLOGY Ffordd Treborth, Treborth, Bangor, Gwynedd, LL57 2RQ

  C26/0228/25/CC Submitted 13 Apr 2026 0m away

  Decision due ~8 Jun

  Gwaith i goed sy'n destun Gorchymyn Gwarchod Coed / Works to trees subject to a Tree Preservation Order

  Status unknown Trees

• Glyn Menai Dementia Care Centre Ffordd Treborth, Treborth, Bangor, Gwynedd, LL57 2RQ

  C25/0811/25/RA Submitted 6 Nov 2025 0m away

  Cais i ryddhau amod 7 (Cynllun Rheolaeth Adeiladu) o ganiatâd cynllunio C24/0237/25/LL ar gyfer dymchweliadau, newidiadau ac estyniadau Application to discharge condition 7 (Construction Management Plan) of planning permission C24/0237/25/LL for demolitions, alterations and extensions

  Decided Conditions Extension

• GLYN MENAI DEMENTIA CARE CENTRE Ffordd Treborth, Treborth, Bangor, Gwynedd, LL57 2RQ

  C25/0747/25/RA Submitted 13 Oct 2025 0m away

  Cais i ryddhau amod 3 (Gwybodaeth Coedyddiaeth) o ganiatâd cynllunio C24/0237/25/LL ar gyfer dymchweliadau, newidiadau ac estyniadau Application to discharge condition 3 (Arboricultural Information) of planning permission C24/0237/25/LL for demolitions, alterations and extensions

  Decided Conditions Extension

• Hen Felin Ffordd Treborth, Treborth, Bangor, Gwynedd, LL57 2RQ

  C26/0167/25/RA Submitted 12 Mar 2026 0m away

  Decision due ~7 May

  Cais i ryddhau amod 5 (Cynllun Rheolaeth Adeiladu Amgylcheddol) a 6 (Cynllun Rheoli Trafnidiaeth Adeiladu) o ganiatâd cynllunio C25/0679/25/AC ar gyfer d iwygio amod 2 (cynlluniau cymeradwy) a 3 (deunyddiau) o ganiatâd cynllunio C24/0825/25/LL ar gyfer dymchwel annedd a garej bresennol, codi annedd a garej yn eu lle (dosbarth defnydd C3) ynghyd â datblygiad cysylltiedig gan gynnwys gwaith morglawdd a draenio. Application to discharge condition 5 ( Construction Environmental Management Plan) and 6 (Construction Transport Management Plan) of planning permission C25/0679/25/AC to amend condition 2 (approved plans) and 3 (materials) of planning permission C24/0825/25/LL for the demolition of an existing dwelling and garage, the erection of a dwelling and garage in their place (use class C3) together with related development including seawall and drainage works.

  Status unknown Conditions New dwelling Demolition
  Domestic

• Ceris Lodge Ffordd Treborth, Treborth, Bangor, Gwynedd, LL57 2RQ

  GWY/2023/2 Submitted 25 Jul 2023 0m away

  Creu canolfan ar gyfer gweithgareddau awyr agored a gofal seibiant i bobl ag anabledd ac anghenion iechyd corfforol a meddyliol a fydd yn cynnwys; · ymestyn ac addasu Ceris Lodge yn adeilad tair ystafell wely. · uned llety pwrpasol newydd gyda 4 ystafell wely ensuite a chyfleusterau cegin/bwyta a lolfa gymunedol. · darparu 8 'pod' un ystafell wely ar gyfer byw 'lled-annibynnol' tra'n mynychu'r ganolfan. · darparu mannau parcio a mannau awyr agored, a · darparu lloches i anifeiliaid ac offer gweithgaredd. Creation of centre for outdoor activity and respite care for people with physical and mental health disability and need to include; · extension and alteration of Ceris Lodge into a three bedroom building. · new build purpose built accomodation unit with 4 ensuite bedrooms and communal kitchen/dining and lounge facilities. · provision of 8 one bedroom 'pods' for 'semi independant' living whilst attending the centre. · provision of parking and outdoor space, and · provision for shelter for animals and activity equipment.

  Decided Outline New dwelling Extension

• Hen Felin Ffordd Treborth, Treborth, Bangor, Gwynedd, LL57 2RQ

  C25/0925/25/LL Submitted 12 Dec 2025 0m away

  Decision due ~6 Feb

  Codi llwybr pren a mannau decin o fewn y coetir, ynghyd â chodi adeilad storfa bren (gyda phaneli solar PV ar y to) a ffordd fynediad, yn ogystal â chodi triniaethau ffin derfyn o amgylch perimedr y tirddaliad coetir ehangach. Erection of boardwalk and decking areas within woodland, erection of woodstore building (with Solar PV on roof) and access road together with erection of boundary treatments around the perimeter of the wider woodland landholding.

  Status unknown Full applications

• C26/0349/03/AC Status unknown

  1, CASTELL BARLWYD Glanypwll Road, Tanygrisiau, Blaenau Ffestiniog, Gwynedd, LL41 3RH

  Cais i ddiwygio amod 2(cynlluniau cymeradwy) i newid dyluniad yr estyniad o ganiatad (C13/0879/03/LL) / Application to amend condition 2 (approved plans) to alter the design of the extension on planning permission (C13/0879/03/LL)

  9 Jun 2026 Amendments
• C26/0337/39/DA Status unknown

  LEE BANK Lon Rhoslyn, Abersoch, Pwllheli, Pwllheli, LL53 7BB

  Diwygiad ansylweddol i ganiatâd cynllunio C21/0086/39/DT i leihau maint y tŷ cychod, ail leoli drws y garej a newid strwythur y to o fflat i to brig. Non-material amendment to planning permission C21/0086/39/DT to reduce the size of the original boathouse, reposition of the garage door and change roof structure from flat to pitched.

  2 Jun 2026 Amendments
• C26/0311/13/DA Status unknown

  5 & 6 Llys Victoria, Stryd Fawr, Bethesda, Bangor, LL57 3AN

  Diwygiad ansylweddol i gais cynllunio C25/0422/13/LL er mwyn diwygio dyluniad y ffenestr gromen i gynnwys 2 ffenestr (3 yn flaenorol) Non-material amendment to planning application to amend the design of the dormer window to include 2 windows (formerly 3).

  20 May 2026 Amendments
• C26/0307/42/DA Status unknown

  Tir Maes Twnti, Morfa Nefyn, Pwllheli, LL53 6EU

  Cais am ddiwygiadau di-faterol i ganiatâd cynllunio C24/0689/42/LL er mwyn newid lefelau lloriau gorffenedig y lleiniau er mwyn sicrhau cydymffurfiaeth gydag Dogfen M a draenio gydag man diweddariadau cydlyniad i'r gosodiad. Application for non-material amendments to planning approval C24/0689/42/LL for changing the finished floor levels of the plots to ensure compliance with Doc M and drainage, alongside minor coordination updates to the layout

  18 May 2026 Amendments
• C26/0303/18/AC Status unknown

  Welsh Slate Museum, GILFACH DDU, Llanberis, Caernarfon, Gwynedd, LL55 4TY

  Diwygio amod rhif 2 (unol a'r cynlluniau) ar caniatad C24/0977/18/LL i godi uchder to y caffi, gwaith tirlunio a materion draenio / Amend condition number 2 (as per plans) on consent C24/0977/18/LL to increase roof height of cafe, landscaping and drainage matters

  18 May 2026 Amendments