Planning applications in Gwynedd, January 2026

Tŷ Gwyn Ffordd Cwmorthin, Tanygrisiau, Blaenau Ffestiniog, Gwynedd, LL41 3SN

Estyniad cefn arfaethedig ac addasiadau cysylltiedig. Proposed rear extension and associated alterations

14 Llys Castan Ffordd Y Parc, Parc Menai,, Bangor, LL57 4FH

Ail gyflwyniad o gais i newid defnydd yr uned swyddfa B1 bresennol i ddefnydd cymysg sy'n cynnwys uned cleifion allanol feddygol (dosbarth defnydd D1) a gofod swyddfa (B1). Resubmission of an application to change the use of the existing B1 office unit into a mixed use comprising a medical outpatient unit (use class D1) and office space (B1).

CEFN GRAIANOG, Llanllyfni, Caernarfon, Gwynedd, LL54 6SY

Barn sgrinio o dan Reoliadau Cynllunio Gwlad a Thref [Asesiad Effaith Amgylcheddol] [Cymru] 2017 ar gyfer gweithredu gwaith ailgylchu, sgrinio ac adfer deunyddiau gwastraff anadweithiol / Screening Application under the To wn and Country Planning [Environmental Impact Assessment] [Wales] Regulations 2017 f or the operation of inert waste materials recycling, screening and recovery plant

Moel Wnion, 5 Bryn, Llandygai, Bangor, Gwynedd, LL57 4LD

Modurdy / ystafell ardd newydd arfaethedig Proposed new garage/garden room

CALAFRIA CHAPEL Stryd Y Capel, Penygroes, Caernarfon, Gwynedd, LL54 6PA

I greu maes parcio newydd ar gyfer pedwar o geir ar safle cyn ardd sy'n eiddo i Gapel Calfaria, A new parking area for four cars on a former garden site belonging to Calfaria Chapel,

CEFN GRAIANOG, Llanllyfni, Caernarfon, Gwynedd, LL54 6SY

Cais ar gyfer gweithredu gwaith ailgylchu, sgrinio ac adfer deunyddiau gwastraff anadweithiol / Application for the operation of inert waste materials recycling, screening and recovery plant

Land Adjacent To Y Llofft Flawd, Rhosgadfan, LL54 7ET

Adeiladu dau dy (dosbarth defnydd C3) ynghyd a gwaith cysylltiol. Erection of two dwellings (C3 use class) along with associated works.

BRYN LLYS MAWR Ffordd Cors Y Llyn, Nebo, Caernarfon, Gwynedd, LL54 6EH

Adeiladu sied amaethyddol Construction of an agricultural shed.

LLANNERCH Ala Road, Pwllheli, Gwynedd, LL53 5BW

Cais am Dystysgrif Datblygiad Cyfreithlon ar gyfer datblygiad arfaethedig estyniad un-llawr a newidiadau i ffenestri a ffenestri to. Application for a Certificate of lawfulness for proposed development relating to the construction of a single storey extension and changes to windows and rooflights.

SNOWDON VIEW CARAVAN PARK, Brynrefail, Caernarfon, Gwynedd, LL55 3PD

Y bwriad i leoli 36 o garafanau gwyliau sefydlog yn lle 75 o garafanau teithiol ar ochr ogleddol Snowdon View, ynghyd â gwelliannau amgylcheddol. The proposed siting of 36 static holiday caravans in lieu of 75 touring caravans on the northern element of Snowdon View, together with environmental improvements

FFERM DEUGLAWDD Lôn Tair Groeslon, Llangian, Pwllheli, Gwynedd, LL53 7LT

Cais llawn i ddymchwel adeilad amaethyddol presennol a chodi adeilad amaethyddol newydd yn ei le / Full application for the demolition of an existing agricultural building and construction of a replacement agricultural building

GWYNDY, Pengroeslon, Pwllheli, Gwynedd, LL53 8ET

Ymestyn sied amaethyddol/ Extend an agricultural shed

Parc Alma, Lon China, Mynytho, Pwllheli, LL53 7RN

Codi adeilad amaethyddol ar gyfer storio peiriannau fferm a phorthiant. Construction of agricultural building to store farming machinery and feed.

BOD EILIAN ISAF, Pentreuchaf, Pwllheli, Gwynedd, LL53 8EQ

Cais llawn i ddymchwel tŷ preswyl presennol ac adeiladu tŷ preswyl newydd yn ei le ynghyd a chodi modurdy ar wahan a gosod system trin/ Full application to demolish an existing residential dwelling and construction of a replacement dwelling, construction of a detched garage and installation of treatment plant.

GLANWEL, Carmel, Caernarfon, Gwynedd, LL54 7AR

Adeiladu estyniad unllawr i modurdy. Construction of a single story garage extension

1, BRYN HYFRYD, Garn Fadryn, Pwllheli, Gwynedd, LL53 8TG

Estyniad ystafell gwydr i ochor eiddo presennol/Single story conservatory to side of property

Cyngor Chwaraeon Cymru, Plas Menai National Watersports Centre, Llanfair Is Gaer, Caernarfon, Gwynedd, LL55 1TS

Addasiadau mewnol a newidiadau allanol i'r offer peirannyddol / Internal alterations and external changes to the mechanical system

Cae Coch Ffordd Rhoslan, Rhoslan, Criccieth, Gwynedd, LL52 0NA

Rhyddhau amod 3 o ganiatad C24/1081/41/DT / Discharge of condition 3 from application C24/1081/41/DT

139 Cae Du Estate, Abersoch, Pwllheli, Gwynedd, LL53 7DE

Codi porth blaen ac estyniad unllawr cefn / Construction of front porch and single storey rear extension

THOMPSON, 217B High Street, Bangor, Gwynedd, LL57 1NY

Cais cynllunio ôl-weithredol ar gyfer creu dau fflat preswyl ychwanegol o fewn adeilad fflatiau presennol i gynyddu nifer yr unedau o 5 fflat i 7 fflat. Retrospective planning application for an additional two residential apartments within an existing apartment building to increase the number of units from 5 apartments to 7 apartments

7 Rock Terrace, Llanberis, Caernarfon, Gwynedd, LL55 4LA

Cais i ddiwygio amod 2 (Cynlluniau a gymeradwywyd) o ganiatâd C25/0424/15/DT, ar gyfer estyniad cefn llawr cyntaf, er mwyn caniatáu diwygiad i’r dyluniad i godi uchder to’r estyniad i 5.11m. Application to amend condition 2 (Approved plans) of planning permission C25/0424/15/DT, for a First floor rear extension, to allow an amendment to the design to raise the roof hight of the extension to 5.11m.

20 Stryd Penlan, Pwllheli, LL53 5DE

Newid defnydd Swyddfa yn Dy Preswyl C3 / Change of use from an office to residential (C3)

6 Ger Y Nant, Llanbedrog, Pwllheli, Gwynedd, LL53 7PA

Gosod pwmp gwres ffynhonnell aer/Installation of a Riello Heatpump

Dentist Surgery, Lodwig Villa Holyhead Road, Bangor, Gwynedd, LL57 2DP

Cais ôl-weithredol ar gyfer newid defnydd rhan o’r fflat presennol i ddefnydd masnachol atodol ar gyfer y practis deintyddol, sef trosi’r gegin a’r ystafell fwyta ddomestig yn gegin a man egwyl i’r staff. Retrospective application for the change of use of part of the existing apartment to ancillary commercial use for the dental practice, namely adoption of the domestic kitchen and dining room to become the staff kitchen and break area.

Tregarth Park, Tregarth, Bangor, LL57 4AP

Uwchraddio'r caeau glaswellt naturiol presennol a gosod ffens perimedr newydd. Upgrade of the existing natural grass pitches and installation of new perimeter fencing

Castell, Cilan, Pwllheli, Gwynedd, LL53 7DD

Cais i waredu to gwastad cefn presennol a chodi estyniad gyda tho crib, ail rendro a gosod ffenestri newydd / Application to remove an existing rear flat roof, construct a new extension with pitch roof, re render and install new windows.

Woodcroft, Llanbedrog, Pwllheli, Gwynedd, LL53 7UA

Cais i ryddhau amod a ategwyd ar benderfyniad apêl yn ymwneud a chytuno cynllun gwella bioamrywiaeth / Application to discharge a condition imposed on an appeal decision to agree a biodiversity enhancement plan.

Waen Lôn Pen Rhos, Morfa Nefyn, Pwllheli, Gwynedd, LL53 6BN

Adeiladu estyniad unllawr ar ochr yr annedd a chynyddu’r estyniad cefn presennol i dŷ deulawr ar wahân. Single storey side extension and addition to existing rear extension to detached two-storey house.

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

Cais i ryddhau amod 5 o ganiatâd cynllunio C24/0689/42/LL er mwyn cymeradwyo manylion cynllun datblygu tai fforddiadwy/ Application to discharge condition 5 on planning approval C24/0689/42/LL in order to approve details of affordable housing scheme.

Coleg Llandrillo, Glynllifon College, Llandwrog, Caernarfon, Gwynedd, LL54 5DU

Cais i rhyddhau amod 8 ( Gorffeniad allanol) ar gais cynllunio C22/0952/17/LL Application to discharge condition 8 (external appearance on application no. C22/0952/17/LL

18 Llwyn Gwalch, Morfa Nefyn, Pwllheli, Gwynedd, LL53 6DE

Estyniad unllawr i gefn yr eiddo. Single storey rear extension

Glyn Rhonwy Store Glyn Rhonwy Estate, Llanberis, Gwynedd, LL55 4EL

Cais i ryddhau yn rhannol gofyniad 4 ‘'Cynllun cyflwyno cam wrth gam’, 6 ‘Cod Ymarfer Adeiladu’, 14 ‘Cyfansoddion Adeiladu a strwythurau dros dro’ a 21 ‘Strategaeth cyfadferiad a gwellhad archeolegol’ o Orchymyn Caniatâd Datblygu Cyfeirnod ‘SI 2021 Rhif 1284 (W.323)’ ar gyfer datblygu cyfleuster storio pwmpio / Application for partial discharge of requirement 4 ‘Phasing plan’, 6 ‘Code of Construction Practice’, 14 ‘Construction compounds and temporary structures’ and 21 ‘Archaeological Compensation and Enhancement Strategy’ of Development Consent Order Reference ‘SI 2021 No. 1284 (W.323)’ for the development of a pumped storage facility.

Plas Bach Holyhead Road, Bangor, Gwynedd, LL57 2HQ

Estyniad i’r balconi presennol ar y llawr cyntaf. Extension to the existing first floor balcony.

24, Chatham Log Cabins, Llandwrog, Caernarfon, Gwynedd, LL54 5TG

Estyniad unllawr ochr bwriededig Proposed single storey side extension

ALBERT INN, 10 Segontium Terrace, Caernarfon, Gwynedd, LL55 2PN

Newid defnydd cyn-dy tafarn yn uned byw (C3) / Change of use of former public house into to residential unit (C3)

The Eyrie, Penrhyndeudraeth, Gwynedd, LL48 6DW

Cais am estyniad deulawr ochr a newidiadau mewnol cysylltiedig / Application for a two storey side extension and associated internal alterations.

Idris Morris, Y Fachell, Llanddeiniolen, Caernarfon, Gwynedd, LL55 3AD

Cais cynllunio llawn ar gyfer trosi adeilad presennol yn lety byncws gyda gwaith addasu cysylltiedig ac defnyddio'r uned gyfagos at ddibenion storio. Full planning application for the conversion of an existing building into a bunkhouse accommodation with associated alterations works and use of the adjacent unit for storage purpose.

TANRARDD, Llangian, Pwllheli, Gwynedd, LL53 7LN

Tystysgrif datblygiad cyfreithlon arfaethedig i ddefnyddio’r eiddo o fewn dosbarthiadau defnydd C3, C5 neu C6 o’r Gorchymyn Cynllunio Gwlad a Thref (Dosbarth Defnydd) 1987 (fel y’i diwygiwyd) ynghyd a’r newid defnydd a ganiateir rhwng y dosbarthiadau. Lawful development certificate for the proposed use of the property within use classes C3, C5 or C6 of the Town and Country Planning (Use Class) Order 1987 along with the permitted change of use between the use classes.

THE OVAL Marcus Street, Caernarfon, Gwynedd, LL55 2HT

Gosod cynhwysydd dur yn barhaol ar y tir. Permanent siting of a container on the land.

HAULFRE Ffriddoedd Road, Bangor, Gwynedd, LL57 2EH

Newid defnydd Tŷ Aml-Feddiannaeth (TAF) i ddefnydd C2 (Sefydliad Preswyl) 8 gwely fel cartref gofal cofrestredig i blant gan gynnwys llety staff, dim newidiadau allanol Change of use of House in Multiple Occupancy (HMO) to 8 bed C2 (Residential Institution) use as registered care home for children including staff accommodation, no external alterations

4 Long Street, Gerlan, Bethesda, Bangor, Gwynedd, LL57 3SY

Codi estyniad deulawr ar gefn yr eiddo Erection of a two-storey extension at the rear of the property

Bryn Helyg, Glasfryn, Y Ffor, LL53 6RD

Cais llawn ar gyfer storfa silwair / Full application for a silage clamp

TRE WEN, Botwnnog, Pwllheli, Gwynedd, LL53 7SP

Adeiladu to dros iard bresennol Construction of roof over existing yard

UNIT 19 Penamser Industrial Estate, Porthmadog, Gwynedd, LL49 9NZ

Cais llawn i newid defnydd o class B1/B2 i class D2 i greu campfa a chanolfan ffitrwydd i ferched yn unig / Application for change of use from use class B1/B2 to D2 to create a womens only gym and fitness centre

Cyngor Gwynedd, 23 Llys Dylan, Maesgeirchen, Bangor, Gwynedd, LL57 1LT

Newid defnydd unedau masnachol llawr gwaelod yn fflatiau preswyl, newidiadau allanol i'r fflatiau llawr cyntaf presennol, ffurfioli parcio ceir, tirlunio a gwaith cysylltiedig. Change of use of ground floor commercial units to residential apartments, external alterations to the existing first floor apartments, formalising car parking, landscaping and associated works.

Tyddyn Du, Dinas, Pwllheli, Gwynedd, LL53 8SU

Diwygiad ansylweddol i ddyluniad hawl cynllunio C21/0411/46/LL. C adw newidiadau fel a'i adeiladwyd yn cynnwys, newid gogwydd yr adeilad, diwygiad i rai agoriadau ffenestri/ ffenestri to a diwygiad i’r deunydd to i lechi Cymreig wedi eu hailgylchu yn hytrach na lleiniau dur lliw llwyd a ganiatawyd. Non-material amendment to the design of planning permission C21/0411/46/LL. Retain the changes as built which include, changes to the building's orientation, amendments to some window / roof window openings and amend roofing material to recycled Welsh slate rather than the permitted grey coloured steel sheets.

TŶ MAWR, Botwnnog, Pwllheli, Gwynedd, LL53 7SS

Dymchwel yr annedd presennol a'r adeiladau allanol presennol ynghyd a'i ail-godi ac ail-leoli'r annedd y tu allan i'r Ardal Rheoli Newid Arfordirol ynghyd a mynediad, seilwaith, draenio a gwaith tirlunio cysylltiol / The demolition of the existing dwelling and associated outbuildings and the relocation and replacement of the dwelling outside of the Coastal Change Management Area, with associated access, infrastructure, drainage and landscaping works

The Oval Marcus Street, Caernarfon, Gwynedd, LL55 2HT

Dymchwel a gwaredu strwythur presennol ac adeiladu stand yn eistedd 600 o bobl i deras gogleddol cae pel-droed yr Oval. Demolition and removal of existing structure and construction of 600 seater stand to north terrace of Oval football pitch.

Pentre Du Isaf Treborth Uchaf, Treborth, Bangor, LL57 2RX

Cais llawn ar gyfer storfa silwair gorchuddiedig/ Full application for a covered silage clamp