Planning Applications Gwynedd

Explore, search and filter planning application data for Gwynedd Council. This page provides a comprehensive list of all Postcodes and Street Names within the Gwynedd Local Authority area, making it easy to search and track planning applications specific to this region. Stay informed on local developments and access detailed planning data for better decision-making. Whether you're a professional or looking to buy a home, this data helps you understand planning activity and potential future changes in your area. Use our easy-to-navigate interface to quickly filter by postcode, street name, or application type to find the most relevant information for your needs.

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uid Authority Size State Type Decision Appeal Ref. Description Address Map Earliest Date Url Share lat lng UUID
C26/0047/45/TC Gwynedd Not known Not known Amendment Cais am Dystysgrif Datblygiad Cyfreithlon ar gyfer datblygiad arfaethedig 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. Llannerch Ala Road, Pwllheli, Gwynedd, LL53 5BW 28/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36933 /planning-applications/local-authority/Gwynedd/uid/4332362F303034372F34352F5443 52.8867 -4.4288 666897
C26/0042/39/LL Gwynedd Not known Not known Full 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 Fferm Deuglawdd Lôn Tair Groeslon, Llangian, Pwllheli, Gwynedd, LL53 7LT 27/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36932 /planning-applications/local-authority/Gwynedd/uid/4332362F303034322F33392F4C4C 52.8268 -4.5556 6674354
C26/0038/40/LL Gwynedd Not known Not known Full Cais llawn i ddymchwel tÅ· preswyl presennol ac adeiladu tÅ· 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. Bod Eilian Isaf, Pentreuchaf, Pwllheli, Gwynedd, LL53 8EQ 26/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36934 /planning-applications/local-authority/Gwynedd/uid/4332362F303033382F34302F4C4C 52.933 -4.455 1307777
C26/0040/39/YA Gwynedd Not known Not known Outline Codi adeilad amaethyddol ar gyfer storio peiriannau fferm a phorthiant. Construction of agricultural building to store farming machinery and feed. Parc Alma, Lon China, Mynytho, Pwllheli, LL53 7RN 26/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36931 /planning-applications/local-authority/Gwynedd/uid/4332362F303034302F33392F5941 52.8531 -4.5223 4751714
C26/0036/20/CR Gwynedd Not known Not known Heritage Addasiadau mewnol a newidiadau allanol i'r offer peirannyddol / Internal alterations and external changes to the mechanical system Cyngor Chwaraeon Cymru, Plas Menai National Watersports Centre, Llanfair Is Gaer, Caernarfon, Gwynedd, LL55 1TS 23/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36929 /planning-applications/local-authority/Gwynedd/uid/4332362F303033362F32302F4352 53.1659 -4.2441 9731489
C26/0035/41/RA Gwynedd Not known Not known Conditions Rhyddhau amod 3 o ganiatad C24/1081/41/DT / Discharge of condition 3 from application C24/1081/41/DT Cae Coch Ffordd Rhoslan, Rhoslan, Criccieth, Gwynedd, LL52 0NA 22/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36936 /planning-applications/local-authority/Gwynedd/uid/4332362F303033352F34312F5241 52.9353 -4.2672 4792165
C26/0033/39/DT Gwynedd Not known Not known Full Codi porth blaen ac estyniad unllawr cefn / Construction of front porch and single storey rear extension 139 Cae Du Estate, Abersoch, Pwllheli, Gwynedd, LL53 7DE 21/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36921 /planning-applications/local-authority/Gwynedd/uid/4332362F303033332F33392F4454 52.8215 -4.5102 6954342
C26/0030/11/LL Gwynedd Not known Not known Full 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. Dentist Surgery, Lodwig Villa Holyhead Road, Bangor, Gwynedd, LL57 2DP 20/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36915 /planning-applications/local-authority/Gwynedd/uid/4332362F303033302F31312F4C4C 53.2243 -4.136 5779396
C26/0034/45/LL Gwynedd Not known Not known Full Newid defnydd Swyddfa yn Dy Preswyl C3 / Change of use from an office to residential (C3) 20 Stryd Penlan, Pwllheli, LL53 5DE 20/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36923 /planning-applications/local-authority/Gwynedd/uid/4332362F303033342F34352F4C4C 52.8889 -4.4174 9304235
C26/0024/16/LL Gwynedd Not known Not known Full Uwchraddio'r caeau glaswellt naturiol presennol a gosod ffens perimedr newydd. Upgrade of the existing natural grass pitches and installation of new perimeter fencing Tregarth Park, Tregarth, Bangor, LL57 4AP 19/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36919 /planning-applications/local-authority/Gwynedd/uid/4332362F303032342F31362F4C4C 53.1921 -4.0911 6073925
C26/0027/38/RA Gwynedd Not known Not known Conditions 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. Woodcroft, Llanbedrog, Pwllheli, Gwynedd, LL53 7UA 19/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36916 /planning-applications/local-authority/Gwynedd/uid/4332362F303032372F33382F5241 52.8565 -4.4854 453271
C26/0028/39/DT Gwynedd Not known Not known Full 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. Castell, Cilan, Pwllheli, Gwynedd, LL53 7DD 19/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36909 /planning-applications/local-authority/Gwynedd/uid/4332362F303032382F33392F4454 52.794 -4.5311 7315234
C26/0025/42/DT Gwynedd Not known Not known Full 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. Waen Lôn Pen Rhos, Morfa Nefyn, Pwllheli, Gwynedd, LL53 6BN 18/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36926 /planning-applications/local-authority/Gwynedd/uid/4332362F303032352F34322F4454 52.9347 -4.552 9385138
C26/0022/17/RA Gwynedd Not known Not known Conditions 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 Coleg Llandrillo, Glynllifon College, Llandwrog, Caernarfon, Gwynedd, LL54 5DU 16/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36924 /planning-applications/local-authority/Gwynedd/uid/4332362F303032322F31372F5241 53.0731 -4.3069 519633
C26/0023/42/RA Gwynedd Not known Not known Conditions 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. Tir Maes Twnti, Morfa Nefyn, Pwllheli, LL53 6EU 16/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36910 /planning-applications/local-authority/Gwynedd/uid/4332362F303032332F34322F5241 52.9321 -4.5439 9771940
C26/0026/42/DT Gwynedd Not known Not known Full Estyniad unllawr i gefn yr eiddo. Single storey rear extension 18 Llwyn Gwalch, Morfa Nefyn, Pwllheli, Gwynedd, LL53 6DE 16/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36927 /planning-applications/local-authority/Gwynedd/uid/4332362F303032362F34322F4454 52.935 -4.5549 2015019
C26/0019/15/RA Gwynedd Not known Not known Conditions Cais ar gyfer rhannol ryddhau gofyniad 4 'Cynllun cyflwyno cam wrth gam', 5 (Rhan 2, 3, 4 a 5) 'Cynllun manwl' a 21 (Strategaeth cyfadferiad a gwellhad archeolegol) o’r Gorchymyn Caniatâd Datblygu Cyfeirnod 'OS 2021 Rhif 1284 (W.323)' ar gyfer datblygu cyfleuster storio pwmp / Application for partial discharge of requirement 4 ‘Phasing plan’ 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. Glyn Rhonwy Store Glyn Rhonwy Estate, Llanberis, Gwynedd, LL55 4EL 15/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36911 /planning-applications/local-authority/Gwynedd/uid/4332362F303031392F31352F5241 53.1282 -4.1392 5285781
C26/0020/24/DT Gwynedd Not known Not known Full Estyniad unllawr ochr bwriededig Proposed single storey side extension 24, Chatham Log Cabins, Llandwrog, Caernarfon, Gwynedd, LL54 5TG 15/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36918 /planning-applications/local-authority/Gwynedd/uid/4332362F303032302F32342F4454 53.0931 -4.3116 8129289
C26/0021/11/DT Gwynedd Not known Not known Full Estyniad i’r balconi presennol ar y llawr cyntaf. Extension to the existing first floor balcony. Plas Bach Holyhead Road, Bangor, Gwynedd, LL57 2HQ 15/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36912 /planning-applications/local-authority/Gwynedd/uid/4332362F303032312F31312F4454 53.2269 -4.1496 9598765
C26/0016/08/DT Gwynedd Not known Not known Full Cais am estyniad deulawr ochr a newidiadau mewnol cysylltiedig / Application for a two storey side extension and associated internal alterations. The Eyrie, Penrhyndeudraeth, Gwynedd, LL48 6DW 14/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36906 /planning-applications/local-authority/Gwynedd/uid/4332362F303031362F30382F4454 52.9365 -4.0648 9878753
C26/0017/18/LL Gwynedd Not known Not known Full 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. Idris Morris, Y Fachell, Llanddeiniolen, Caernarfon, Gwynedd, LL55 3AD 13/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36920 /planning-applications/local-authority/Gwynedd/uid/4332362F303031372F31382F4C4C 53.1731 -4.1781 1694579
C26/0013/39/TC Gwynedd Not known Not known Amendment 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. Tanrardd, Llangian, Pwllheli, Gwynedd, LL53 7LN 12/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36902 /planning-applications/local-authority/Gwynedd/uid/4332362F303031332F33392F5443 52.8306 -4.5316 6247100
C26/0011/11/LL Gwynedd Not known Not known Full Newid defnydd TÅ· 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 Haulfre Ffriddoedd Road, Bangor, Gwynedd, LL57 2EH 09/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36914 /planning-applications/local-authority/Gwynedd/uid/4332362F303031312F31312F4C4C 53.2254 -4.1364 5245329
C26/0008/44/LL Gwynedd Not known Not known Full 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 Unit 19 Penamser Industrial Estate, Porthmadog, Gwynedd, LL49 9NZ 08/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36896 /planning-applications/local-authority/Gwynedd/uid/4332362F303030382F34342F4C4C 52.9294 -4.1401 906435
C26/0009/37/LL Gwynedd Not known Not known Full Cais llawn ar gyfer storfa silwair / Full application for a silage clamp Bryn Helyg, Glasfryn, Y Ffor, LL53 6RD 08/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36903 /planning-applications/local-authority/Gwynedd/uid/4332362F303030392F33372F4C4C 52.9494 -4.3792 1267326
C26/0010/32/LL Gwynedd Not known Not known Full Adeiladu to dros iard bresennol Construction of roof over existing yard Tre Wen, Botwnnog, Pwllheli, Gwynedd, LL53 7SP 08/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36925 /planning-applications/local-authority/Gwynedd/uid/4332362F303031302F33322F4C4C 52.8401 -4.5766 7528860
C26/0004/11/LL Gwynedd Not known Not known Full 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. Cyngor Gwynedd, 23 Llys Dylan, Maesgeirchen, Bangor, Gwynedd, LL57 1LT 07/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36917 /planning-applications/local-authority/Gwynedd/uid/4332362F303030342F31312F4C4C 53.2222 -4.117 8744258
C26/0005/46/DA Gwynedd Not known Not known Amendment Diwygiad ansylweddol i ddyluniad hawl cynllunio C21/0411/46/LL . Non-material amendment to the design of planning permission C21/0411/46/LL. Tyddyn Du, Dinas, Pwllheli, Gwynedd, LL53 8SU 06/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36905 /planning-applications/local-authority/Gwynedd/uid/4332362F303030352F34362F4441 52.8904 -4.5872 2442272
C26/0002/30/LL Gwynedd Not known Not known Full 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 TÅ· Mawr, Botwnnog, Pwllheli, Gwynedd, LL53 7SS 05/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36894 /planning-applications/local-authority/Gwynedd/uid/4332362F303030322F33302F4C4C 52.8292 -4.589 4004021
C26/0003/14/LL Gwynedd Not known Not known Full 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. The Oval Marcus Street, Caernarfon, Gwynedd, LL55 2HT 05/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36898 /planning-applications/local-authority/Gwynedd/uid/4332362F303030332F31342F4C4C 53.1357 -4.2687 1974568
C26/0001/25/LL Gwynedd Not known Not known Full Cais llawn ar gyfer storfa silwair gorchuddiedig/ Full application for a covered silage clamp Pentre Du Isaf Treborth Uchaf, Treborth, Bangor, LL57 2RX 02/01/2026 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36908 /planning-applications/local-authority/Gwynedd/uid/4332362F303030312F32352F4C4C 53.2146 -4.1695 8062927
C25/0950/23/DT Gwynedd Not known Not known Full Codi estyniad un llawr ar gefn y eiddo, ynghyd ag estyniad llawr cyntaf dros y gegin/ystafell fwyta bresennol i ffurfio ystafell wely Erection of single storey extension to the rear of the property, together with a first floor extension over existing kitchen/dining to form bedroom 20 Nant Y Glyn, Llanrug, Caernarfon, Gwynedd, LL55 4AH 31/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36900 /planning-applications/local-authority/Gwynedd/uid/4332352F303935302F32332F4454 53.1482 -4.1894 7142058
C25/0946/44/EIA Gwynedd Medium Not known Outline Estyniad i gompownd ceblau selio pen presennol Wern gan gynnwys mynediad parhaol newydd, Compownd selio pen newydd ac adeilad pen twnnel gyda mynediad parhaol ym Minffordd; tynnu compownd selio pen presennol Garth; gosod ceblau 400 cilofolt (kV) newydd i ddisodli ceblau 400 kV a 132 kV di-angen; ac isadeiledd a gwaith atodol cysylltiedig. The extension of the existing Wern Cables Sealing End Compound (CSEC) including a new permanent access; a new Minffordd CSEC and Tunnel Head House (THH) with permanent access; the removal of the existing Garth CSEC; installation of new 400 kilovolt (kV) cables to replace redundant 400 kV and 132 kV cables; and other associated infrastructure and ancillary works. Land Along The A483 Corridor, Porthmadog, 24/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36890 /planning-applications/local-authority/Gwynedd/uid/4332352F303934362F34342F454941 7248871
C25/0947/25/EIA Gwynedd Medium Not known Outline Amnewid ceblau tanddaearol presennol a gosod ceblau tanddaearol traws-safle newydd yn is-orsaf presennol Pentir yn ogystal a gwaith cysylltiol. Replacement of existing underground cables and installation of new cross site underground cables in the existing Pentir substation and ancillary works Pentir Substation, Bangor, LL57 4ED 24/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36883 /planning-applications/local-authority/Gwynedd/uid/4332352F303934372F32352F454941 53.1853 -4.1587 6928432
C25/0948/45/HY Gwynedd Small Not known Advertising Gosod arwyddion ffasgia newydd a byrddu bwydlen / Installation of New fascia signage and menu boards Venue Station Square, Pwllheli, Gwynedd, LL53 5HG 24/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36862 /planning-applications/local-authority/Gwynedd/uid/4332352F303934382F34352F4859 52.8878 -4.4176 7889751
C25/0949/36/EIA Gwynedd Medium Not known Outline Cais ar gyfer darparu is-orsaf newydd ynghyd a seilwaith a gwaith cysylltiol i gynnwys ffordd mynediad newydd o'r A487 ac uwchraddio ffordd mynediad amaethyddol a gosod ceblau tanddaearol 132 kV newydd er mwyn cysylltu gyda'r llinnell Rhwydwaith Trydan presennol uwchben. Application for a new substation and associated infrastructure and ancillary works, including a new access road from the A487 and the upgrading of an existing agricultural access track, and new underground 132 kV cables to connect to the existing Electricity Networks overhead line. Land South Of A487, Glan Dwyfach, Garndolbenmaen, LL51 9PQ 24/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36877 /planning-applications/local-authority/Gwynedd/uid/4332352F303934392F33362F454941 52.9607 -4.262 5005792
C25/0944/42/AM Gwynedd Not known Not known Outline Cais amlinellol gyda'r holl faterion wedi eu cadw yn ol i godi ty preswyl deulawr ar rhan segur o lain dwbl gwreiddiol / Outline application with all matters reserved for the erection of a 2 storey dwelling on vacant half of original double plot Glanfa Lôn Tyn Y Mur, Morfa Nefyn, Pwllheli, Gwynedd, LL53 6AY 22/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36893 /planning-applications/local-authority/Gwynedd/uid/4332352F303934342F34322F414D 52.9332 -4.5542 6313462
C25/0939/45/LL Gwynedd Not known Not known Full Cais cynllunio i osod peiriannau ac offer echdynnu a man newidiadau i'r tu allan / Application for planning consent for the installation of plant and extract equipment plus minor external alterations Venue Station Square, Pwllheli, Gwynedd, LL53 5HG 19/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36854 /planning-applications/local-authority/Gwynedd/uid/4332352F303933392F34352F4C4C 52.8878 -4.4176 7702035
C25/0941/04/DT Gwynedd Not known Not known Full Cais i godi estyniad deulawr ynghyd a man newidiadau mewnol yn dilyn dymchwel yr ystafell haul bresennol / The proposal includes the erection of a two-storey extension, together with other minor internal alterations, following the demolition of the existing conservatory. TÅ· Cipar, Cwmtirmynach, Y Bala, Gwynedd, LL23 7EB 19/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36858 /planning-applications/local-authority/Gwynedd/uid/4332352F303934312F30342F4454 52.9627 -3.6218 880524
C25/0943/18/RA Gwynedd Not known Not known Conditions Cais i ryddhau amod 12 (cynllun gwaredu dŵr budr a dŵr wyneb) o ganiatâd C19/0415/18/DT ar gyfer codi un tŷ deulawr a datblygiadau cysylltiol, a ddiwygiwyd gan ganiatâd C24/0467/18/AC. Application to discharge condition 12 (foul and surface water disposal scheme) of permission C19/0415/18/DT for the erection of one two‑storey dwelling and associated developments, as amended by permission C24/0467/18/AC. Bakhita, Bethel, Caernarfon, Gwynedd, LL55 1YB 19/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36901 /planning-applications/local-authority/Gwynedd/uid/4332352F303934332F31382F5241 53.1677 -4.2051 6033474
C25/0936/24/DT Gwynedd Not known Not known Full Dymchwel y modurdy a'r storfa allanol bresennol, a chodi estyniadau unllawr a deulawr newydd yn eu lle, ynghyd â newidiadau cysylltiedig. Demolition of existing garage and external store, erection of new single-storey and two-storey extensions in lieu, along with associated alterations. Allt Wen, Ffrwd Cae Du, Bontnewydd, Caernarfon, Gwynedd, LL54 7YG 18/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36860 /planning-applications/local-authority/Gwynedd/uid/4332352F303933362F32342F4454 53.1056 -4.2681 5886209
C25/0937/18/CR Gwynedd Not known Not known Heritage Addasiadau i rhan G38 (gweithdy haearn), G39 (gweithdy cyffredinol) a F01 (gofod arddangosfa) o'r Amgueddfa / Alterations to Metal Workshop (G38), General Workshop (G39) and Temporary Exhibition Space (F01) Welsh Slate Museum, Gilfach Ddu, Llanberis, Caernarfon, Gwynedd, LL55 4TY 18/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36895 /planning-applications/local-authority/Gwynedd/uid/4332352F303933372F31382F4352 53.1206 -4.1153 8983795
C25/0940/39/DT Gwynedd Not known Not known Full Estyniad ac addasiadau, gan gynnwys balconi. / Extension and alterations, including a balcony. TÅ· Newydd, Mynytho, Pwllheli, Gwynedd, LL53 7RR 18/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36889 /planning-applications/local-authority/Gwynedd/uid/4332352F303934302F33392F4454 52.8491 -4.5037 7035245
C25/0928/44/CR Gwynedd Not known Not known Heritage Gosod canllaw yng nghanol y grisiau / Erect railing in middle of stairs Grisiau Mawr, Pencei, , Porthmadog, LL49 9AT 17/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36904 /planning-applications/local-authority/Gwynedd/uid/4332352F303932382F34342F4352 52.9235 -4.1307 7569311
C25/0931/33/LL Gwynedd Not known Not known Full Cais llawn i gynnal gwaith cloddio er mwyn creu lagŵn slyri / Full application for excavation works to create a slurry lagoon. Land At Hendre, Boduan, LL53 8TY 17/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36850 /planning-applications/local-authority/Gwynedd/uid/4332352F303933312F33332F4C4C 52.9143 -4.5067 5967112
C25/0933/20/SO Gwynedd Medium Not known Outline Cais am farn gwmpasu o dan Reol 14, Rhan 4 o Reoliadau Cynllunio Gwlad a Thref [Asesiad Effaith Amgylcheddol] [Cymru] 2017 – dymchwel adeiladau a strwythurau presennol, ailraddio'r tir a codi adeilad canolfan data (B8) ynghyd a chyfarpar cysylltiol i gynnwys generaduron, peirianwaith, cyfarpar, is-orsaf(oedd), mynedfeydd, parcio ac ardaloedd gwasanaethu, gwaith draenio a peirianyddol gan gynnwys cysylltu ac ail-leoli gwasanaethau / Request for a scoping opinion under Regulation 14, Part 4 of the Town and Country Planning [Environmental Impact Assessment] [Wales] Regulations 2017 - demolition of existing buildings/structures, re-grading of land and erection of Class B8 data centre building(s) with all associated back-up generators, plant, equipment, sub-station(s), accesses, parking and servicing areas, drainage and engineering works, including services diversion/connection. Land At And Adjacent To The Former Ferodo Site, Griffiths Crossing, Caernarfon, LL55 1TP 17/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36849 /planning-applications/local-authority/Gwynedd/uid/4332352F303933332F32302F534F 53.158 -4.2529 773711
C25/0934/03/DT Gwynedd Not known Not known Full Estyniad deulawr cefn. Two-storey rear extension. Hafannedd Summerhill Terrace, Blaenau Ffestiniog, Gwynedd, LL41 3EQ 17/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36855 /planning-applications/local-authority/Gwynedd/uid/4332352F303933342F30332F4454 52.9942 -3.9308 6353914
C25/0935/39/LL Gwynedd Not known Not known Full Cais llawn i newid defnydd rhan o dy preswyl presennol ar gyfer ymestyn ardal siop / Full application to change a section of an existing residential property in order to extend a shop area Y Wenallt High Street, Abersoch, Pwllheli, Gwynedd, LL53 7DR 17/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36922 /planning-applications/local-authority/Gwynedd/uid/4332352F303933352F33392F4C4C 52.8243 -4.5045 2269097
C25/0927/15/LL Gwynedd Not known Not known Full Codi annedd newydd Erection of new dwelling Land Adjacent To 10 Warden Street, Llanberis, LL55 4HP 16/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36838 /planning-applications/local-authority/Gwynedd/uid/4332352F303932372F31352F4C4C 53.1218 -4.1311 1867754
C25/0919/24/DT Gwynedd Not known Not known Full Dymchwel modurdy presennol gan adeiladau estyniad cefn ac ochr newydd ynghyd a modurdy newydd. Demolish existing garage to build rear and side extension in addition to a new garage. Tyn Y Weirglodd, Rhosgadfan, Caernarfon, Gwynedd, LL54 7ET 15/12/2025 00:00:00 https://amg.gwynedd.llyw.cymru/planning/index.html?fa=getApplication&id=36833 /planning-applications/local-authority/Gwynedd/uid/4332352F303931392F32342F4454 53.0934 -4.229 8383367
*The planning statistics displayed are carefully compiled from publicly accessible data on local authority and governmental sites. Due to the dynamic nature of planning decisions, some data may vary as updates are made by the authorities. While we aim to capture the most current data, and progressively work to infill historic data, some applications or appeal outcomes may be subject to ongoing review or change, and due to techincal limitations.

LL15 Clocaenog, County of Denbighshire, Cyffylliog, Denbigh, Denbighshire, Dinbych, Efenechtyd, Llabedr-Dyffryn-Clwyd, Llanbedr, Llanelidan, Llanfair-Dyffryn-Clwyd, Llanfair, Llangynhafal, Llanrhydd, Plâs-Llanrhydd, Rhewl, Rhuthun, Ruthin, Sir Ddinbych, Denbighshire

LL21 Cerrig-y-Druidion, Llanfihangel-Glyn-Myfyr, Llangwm, Conwy, Rug, Llangollen, Bettws Gwerfil Goch, Bryneglwys, Carrog, Clawdd-newydd, Clwyd, Corwen, Cynwyd, Derwen, Glyndwr, Glyn-Dyfrdwy, Gwyddelwern, Llandrillo, Denbighshire

LL22 Abergele, Bettws Abergele, Bettws-yn-Rhôs, Dinorben, Gwytherin, Llanddulas, Llanelian, Llanelian-yn-Rhôs, Llanfair Talhaiarn, Llangerniew, Conwy, Kinmel, Denbighshire

LL23 Bala, Frongoch, Llandderfel, Llanderfel, Llanfor, Llangower, Llanuwchllyn, Llanycil, Pale, Pandy, Gwynedd

LL31 Llandudno Junction, Conwy

LL33 Llanfairfechan, Conwy, Aber, Gwynedd

LL37 Llangelynin, Llwyngwril, Gwynedd

LL39 Arthog, Capel Arthog, Gwynedd

LL40 Cross Foxes, Dolgellau, Dolgelley, Dolgelly, Gwynedd, Llanelltyd, Llanfachreth, Meirionydd, Merioneth, Merionethshire, Gwynedd

LL46 Harlech, Llanfair, Gwynedd

LL51 Bryncir, Brynkir, Dolbenmaen, Gwynedd

LL53 Aberdaron, Abererch, Abersoch, Bodfean, Boduan, Bodvean, Bottwnog, Bryncroes, Carnguwch, Chwilog, Ederyn, Llanaelhaiarn, Llanaelliaiarn, Llanarmon, Llanbedrog, Llandegwning, Llandudwen, Llanengan, Llanfaelrhys, Llanfihangel Bachellaeth, Llanfihangel, Llangian, Llangwnadl, Llangybi, Llannor, Llanor, Llithfaen, Meyllteyrn, Morfa Nefyn, Morfa Nevin, Nefyn, Nevin, Penllech, Penrhos, Pistyll, Pwllbeli, Pwllheli, Rhiw, Rhôs-y-llan, Sarn, Tudweiliog, Twdweiliog, Gwynedd

A499, Aberdaron, Abererch, Abersoch, Afon Wen, Ala Road, Ala Uchaf, Allt Fawr, Allt Goch, Allt Salem, Anelog, Awelfryn, Bardsey Island, Boduan, Borth Fawr, Botwnnog, Bro Cymerau, Bro Gwylwyr, Bro Heli, Bro Llwyn, Bro Sion Wyn, Brooks, Bryn Estate, Bryn Glas, Bryn Hedd, Bryncroes, Bwlch Gwynt, Bwlchtocyn, Cae Arfryn, Cae Capel, Cae Du, Cae Hendy, Caernarvon Road, Cardiff Road, Carneddol, Carreg y Defaid, Cefn Morfa, Cefn Traeth, Cefn Y Twr, Ceidio, Cerrig Gleision, Churton Street, Chwilog, Cilan, Coed Helyg, Coleg Meirion Dwyfor, Coleg Meirion-Dwyfor, Congl Meinciau, Cornwall Estate, Cors Geirch, Cysgod Y Bryn, Cysgod Y Cwmwd, Denio, Dinas, Dolwar, Edern, Efailnewydd, Erwenni, Ffordd Cae Rhyg, Ffordd Dewi Sant, Ffordd Gwenllian, Ffordd Mela, Ffordd Pedrog, Gaol Street, Garn Boduan, Garnfadryn, Ger Afon, Glan Cymerau, Glan Pwll, Glan Rhyd, Groesfford, Groesffordd, Gwydryn Drive, Gybi, Hafan y Mor, Heol Hamdden, High Street, Innes Estate, Kingshead Street, Llanarmon, Llanbedrog, Llanengan, Llangian, Llangwnnadl, Llangybi, Llaniestyn, Llannor, Llithfaen, Llwyn Gwalch, Llwyndyrys, Llys Llywelyn, Llys Madryn, Lon Abererch, Lon Bodlondeb, Lon Boduan, Lon Bribwll, Lon Bridin, Lon Cae Glas, Lon Cernyw, Lon Coed, Lon Cytun, Lon Dywod, Lon Elim, Lon Engan, Lon Fawr, Lon Garmon, Lon Gerddi, Lon Goch, Lon Golff, Lon Groes, Lon Groesffordd, Lon Gwydryn, Lon Hawen, Lon Isaf, Lon Las, Lon Llan, Lon Pen Cei, Lon Pen Rhos, Lon Penrallt, Lon Pentre Bach, Lon Pin, Lon Pont Morgan, Lon Pwll Clai, Lon Pwll Wiliam, Lon Rhos, Lon Rhoslyn, Lon Sarn Bach, Lon Tan Y Bryn, Lon Terfyn, Lon Traeth, Lon Tyn Pwll, Lon Tyn Y Mur, Lon Ty'r Gof, Lon Uchaf, Lon Uwchmynydd, Lon Y Llwyn, Lon Y Traeth, Lon Yr Eglwys, Lower Cardiff Road, Machroes, Maen Llwyd, Maes Awel, Maes Terfyn, Maes Twnt, Maes y Garn, Maes Yr Orsaf, Manor Avenue, Marinaland, Market Square, Mitre Place, Morfa, Morfa Nefyn, Morfa'r Garreg, Mynydd Mawr, Mynydd Nefyn, Mynydd Rhiw, Mynytho, Nant Saethon, Nefyn, North Street, Parc Eithin, Parc Yr Efail, Parciau, Pen y Bryn, Pencaenewydd, Penllech, Penlon Llyn, Penrallt, Penrhos, Penrhydlyniog, Penrhyn Mawr, Pentreuchaf, Penybryn, Pen-y-Bryn, Pistyll, Porth Colmon, Porth Dinllaen, Porth Ychain, Pwll Wiliam, Pwllheli, Rhiw, Rhodfa Marian Y Mor, Rhodfa'r Garn, Rhoshirwaun, Rhydlios, Rhyd-y-clafdy, Sarn Bach, Sarn Mellteyrn, South Beach, St Tudwal's, Stad Ty Cerrig, Stryd Fawr, Stryd Moreia, Stryd Penlan, Stryd Potts, Stryd Y Ffynnon, Stryd Y Llan, Stryd Y Plas, Talcymerau Road, Tan Y Gaer, Tan Yr Eglwys, The Warren, Trefaes, Trefgraig, Treflan, Trewerin, Tudweiliog, Ty'n Pwll, Tyn Y Mur, Uwchmynydd, Wern Y Wylan, Whitehouse Drive, Wig, Y Fron, Y Groes, Y Lon Gam, Y Maes, Y Traeth, Yr Harbwr, Ysgol Botwnnog, Ysgol Crud y Werin, Ysgol Cymerau, Ysgol Gynradd Abersoch, Ysgol Gynradd Nefyn, Ysgol Gynradd Pentreuchaf

LL54 Bettws Garmon, Clynnog, Clynnog-fawr, Dinas, Groeslon, Gwydir, Gwydyr, Gyrngôch, Llandwrog, Llanllyfni, Llanwnda, Moaltryfan, Moel-tryfan, Nantlle, Pen-y-groes, Waenfawr, Gwynedd

Aberdesach, Allt Doli, B4418, Beach Road, Beddgwenan, Bethesda Bach, Betws Garmon, Bontnewydd, Bro Llwyndu, Bryn Glas, Bryn Rhedyw, Bryncelyn Road, Bwlch Mawr, Cae Bryn, Cae Melan, Cae Sarn, Cae'r Eglwys, Caernarfon Airport, Capel Uchaf, Carmel, Cefn Dyffryn, Chapel Street, Church Road, Cilgwyn, Clynnog Fawr, Coed Helen, Coed Henryd, Coleg Glynllifon, Dinas, Dinas Dinlle, Dolydd, Dyffryn Nantlle, Eifl Road, Ffordd Cae Duon, Ffordd Clynnog, Ffordd Cors Y Llyn, Ffordd Haearn Bach, Ffordd Iago, Ffordd Nasareth, Ffordd Nebo, Ffordd Pont Lloc, Ffordd Rhedyw, Ffordd Y Llyn, Ffordd Yr Aber, Ffordd yr Orsaf, Foel, Fron Deg, Garth Estate, Gerddi Benar, Gernant, Glan Aber, Groeslon, Gyrn Goch, Hen Lon, Hyfrydle Road, Lime Street, Llanaelhaearn, Llandwrog, Llanfaglan, Llanllyfni, Llanwnda, Llwyn Beuno, Llwyn Fuches, Llwyndu Road, Llys Eben, Llys Yr Eifl, Lon Bron Arfon, Lon Caernarfon, Lon Cefn Glyn, Lon Cefn Gosen, Lon Ddwr, Lon Eifion, Lon Newydd, Lon Pant Y Gog, Lon Pitar, Lon y Bryn, Lon Y Buarth, Lon Y Wig, Maen Dylan, Maes Dulyn, Maes Glas, Maes Gwydion, Maes Gwydir, Maes Hyfryd, Maes Tryfan, Maes Y Llan, Market Place, Moel Tryfan, Moelfre, Mor Awel, Nantlle, Nantlle Road, Nasareth, Nebo, Pen Bonc, Penygroes, Pontllyfni, Rhesdai Gwyrfai, Rhiwlas Road, Rhos Isaf, Rhosgadfan, Rhostryfan, Saron, Snowdon Street, Stad Tan Y Coed, Stryd Fawr, Sychnant Terrace, Tal Garnedd, Talysarn, Tan Yr Allt, Tre Wen, Trefor, Victoria Road, West End, Y Dreflan, Y Foryd, Y Fron, Y Garn, Y Garreg, Y Grugan, Yr Eifl, Ysgol Bro Lleu, Ysgol Bro Llifon, Ysgol Brynaerau, Ysgol Dyffryn Nantlle

LL55 Caernarvon, Caernarvonshire, Carnarvon, Carnarvonshire, Arfon, Conwy, Beddgelert, Caernarfon, Cwm-y-glo, Dinorwic, Llanberis, Llanrug, Carnarvon, Gwynedd

A4086, Ala Las, Allt Goch, Allt Pafiliwn, B4366, Balaclafa, Bangor Road, Bangor Street, Bank Quay, Bethel, Bethel Road, Bontnewydd, Bridge Street, Bro Eglwys, Bro Helen, Bro Rhythallt, Bro Waun, Bron Gwynedd, Bron Rhythallt, Bryn Crwn, Bryn Eglwys, Bryn Eilian, Bryn Goleu, Bryn Hyfryd, Bryn Moelyn, Bryn Rhos, Bryn Teg, Bryn Tirion, Brynrefail, Cae Berllan, Cae Capel, Cae Corn Hir, Cae Garw Road, Cae Gwyn, Cae Mur, Caeathro, Caeau Bach, Cae'r Saint, Caernarfon, Cambell Road, Castle Hill, Castle Square, Cefn Cadnant, Cefn Du, Cefn Elan, Cefn Hendre, Ceunant, Chapel Street, Church Lane, Church Road, Church Street, Cil Coed, Cil Isaf, Cil Peblig, Cil Uchaf, Clogwyn, Clwt-y-bont, Coed Doctor, Coed Helen Lane, Coed Mawr, Coed Tan-dinas, Coed Y Ddol, Craig Y Dinas, Cremlyn, Cwm Silyn, Cwm-y-glo, Deiniol Road, Deiniolen, Derwen Las, Dinorwig, Dinorwig Power Station, Dol Beuno, Dol Eilian, Eleanor Street, England Road North, England Road South, Erw Deg, Erw Wen, Fachwen, Ffordd Bryngwyn, Ffordd Caernarfon, Ffordd Cibyn, Ffordd Clegir, Ffordd Coed Marion, Ffordd Crawia, Ffordd Cwstenin, Ffordd Elidir, Ffordd Eryri, Ffordd Felin Seiont, Ffordd Glanffynnon, Ffordd Glanmoelyn, Ffordd Llanbeblig, Ffordd Maes Barcer, Ffordd Marchlyn, Ffordd Menai, Ffordd Minffordd, Ffordd Padarn, Ffordd Pafiliwn, Ffordd Pandy, Ffordd Pant, Ffordd Segontiwm, Ffordd Wern, Ffordd Ysgubor Goch, Fron Goch, Gallt Y Sil, Gallt-y-foel, Garnon Street, Garth, Gerddi Menai, Gerddi Padarn, Gilfach Ddu, Glan Moelyn, Glan Seiont, Glanffynnon, Glanrafon, Glaslyn, Glyn Rhonwy, Groeslon, Gwel Fynydd, Gwel Y Llan, Gwel Y Mynydd, Hafan Elan, Hafod Oleu, Hampton Road, Hendre Street, Henwalia, High Street, Hill Street, Hyfrydle, Llain Y Felin, Llanberis, Llanberis Road, Llanddeiniolen, Llanrug, Llwyn Beuno, Llyn Padarn, Llys Gwyn, Llys Siabod, Llys Tryfan, Llys Y Foel, Llys Y Garn, Llys Yr Eifl, Llys Yr Orsedd, Lon Bach, Lon Cae Darbi, Lon Cae Ffynnon, Lon Cilgwyn, Lon Garret, Lon Groes, Lon Helen, Lon Hen Felin, Lon Ty Gwyn, Lon Ysgol Rad, Maes Cadnant, Maes Gwylfa, Maes Gwynedd, Maes Hyfryd, Maes Meddyg, Maes Padarn, Maesincla, Maesincla Lane, Marchlyn Bach, Marcus Street, Market Street, Mill Lane, Minafon Terrace, Minffordd, Moel Eilio, Muriau Park, New Street, Newton Street, North Road, Palace Street, Pant Y Waun, Park Lane, Pen Cae, Pen Deitsh, Pendalar, Pengelli Wyn, Penisa'r Waun, Penllyn, Penrallt Isaf, Pentre Helen, Pool Lane, Pool Side, Pool Street, Porth Y Gogledd, Preswylfa, Priestley Road, Pwllheli Road, Rallt Goch, Rhes Cynfi, Rhes Priordy, Rhes Rhythallt, Rhes Segontiwm, Rhiwen, Rhos, Rhos Lan, Rhoslan, Rhyd Fadog, Saron, Seion, Shirehall Street, Sir Hugh Owen School, Skinner Street, Snowdon Mountain Railway, Snowdon Street, South Road, St David's Road, St Helen's Road, Stad Eryri, Station Road, Stryd Bellaf, Stryd Fawr, Stryd Goodman, Stryd Santes Helen, Stryd Siarlot, Stryd Warden, Stryd Y Castell, Stryd Y Porth Mawr, Stryd Yr Eglwys, Tai Caradog, Talafon, Tan Y Bont, Terfyn, Thomas Street, Tref Eilian, Trem Y Chwarel, Twthill East, Twthill West, Ty Du Road, Tyddyn Llwydyn, Uxbridge Square, Warfield Road, Water Street, Waun, Waunfawr, William Street, Y Bryn, Y Ddol, Y Glyn, Yr Hwylfa, Yr Wyddfa, Ysbyty Eryri, Ysgol Brynrefail, Ysgol Gynradd Llanrug, Ysgol Gynradd Waunfawr, Ysgol yr Hendre, Ystad Ddiwydiannol Y Glyn

LL57 Bethesda, Llandegai, Llanllechid, Menai Bridge, Menai, Tregarth, Tregorth, Gwynedd

A4244, A5, Abbey Road, Abercaseg, Adwy'r Nant, Ainon Road, Albert Street, Allt Glanrafon, Alotan Crescent, Ambrose Street, Ar Afon, Ashley Road, Bangor, Bangor Uchaf, Bangor University, Beach Road, Belmont Avenue, Belmont Drive, Belmont Road, Bethesda, Bontuchaf, Braichmelyn, Breeze Hill, Britannia Square, Bro Derfel, Bro Emrys, Bro Infryn, Bro Ogwen, Bro Rhiwen, Bro Salem, Bro Syr Ifor, Bron Arfon, Bron Bethel, Bron Ogwen, Bron Y Waun, Bryn Adda, Bryn Berllan, Bryn Caseg, Bryn Coed, Bryn Eglwys, Bryn Eithinog, Bryn Heulog Terrace, Bryn Ogwen, Bryniau, Brynteg Street, Bryntirion, Buckley Road, Cae Cilmelyn, Cae Glas, Cae Gors, Cae Gwigin, Caeau Gleision, Caellepa, Caerhun, Capel-y-graig, Cefnfaes Street, Ceris Newydd Nursing Home, Chapel Street, Cilfach Crwys, Cilfodan, Cilfodan Terrace, Clwt Rhywiog, Coed Mawr, Coed Rhydau, Coed Wern-ty-gwyn, Coed Y Castell, Coed Y Maes, Coetmor New Road, Coetmor Road, Coleg Menai, Convent Lane, Cwlyn, Cytir Lane, Dean Street, Deiniol Street, Ebenezer Place, Erw Faen, Erw Las, Euston Road, Evelyn Road, Farrar Road, Felln Hen Road, Ffordd Bangor, Ffordd Bronwydd, Ffordd Caernarfon, Ffordd Carneddi, Ffordd Ceiriog, Ffordd Coed Mawr, Ffordd Craig Y Don, Ffordd Crwys, Ffordd Cynan, Ffordd Deiniol, Ffordd Denman, Ffordd Eithinog, Ffordd Ffriddoedd, Ffordd Garth Uchaf, Ffordd Gelli Morgan, Ffordd Gerlan, Ffordd Glynne, Ffordd Gwyndy, Ffordd Gwynedd, Ffordd Hendre, Ffordd Hendrewen, Ffordd Islwyn, Ffordd Llanllechid, Ffordd Meirion, Ffordd Pen Y Bryn, Ffordd Penchwintan, Ffordd Penlan, Ffordd Penrhos, Ffordd Sackville, Ffordd Siliwen, Ffordd Tan Y Bryn, Ffordd Tan Y Bwlch, Ffordd Tanrhiw, Ffordd Tegid, Ffordd Tyn Clwt, Ffordd Y Castell, Ffordd Y Coleg, Ffordd Y Llyn, Ffordd Y Parc, Ffordd Y Stesion, Ffordd Y Traeth, Ffordd Y Tywysog, Ffordd Yr Elen, Field Street, Fountain Street, Friars Road, Fron Deg, Gardd Denman, Garneddwen, Garth, Garth Hill, Garth Road, Gefnan, Gerlan, Gernant, Glan Ffrydlas, Glan Menai, Glan Ogwen, Glanafon Street, Glanrafon, Glasinfryn, Goleufryn, Gorad Road, Goronwy Street, Greenwood Avenue, Gwern Las, Gwernydd, Gwynedd Hospital, Hafod Lane, Hafod Lon, Heol Dewi, Hermon Road, High Street, Hill Street, Hirael, Holyhead Road, Hwfa Road, James Street, John Street, Kingsley Avenue, Kyffin Square, Llain Deg, Llain Y Pebyll, Llain Yr Eglwys, Llandygai, Llanllechid, Llwyn Bedw, Llwyn Bleddyn Road, Llys Adda, Llys Dewi Sant, Llys Mair, Llys Tudur, Lon Glandwr, Lon Groes, Lon Las Ogwen, Lon Newydd, Lon Plas, Lon Pobty, Lon Sarnau, Lon Y Wern, Long Street, Love Lane, Lower Street, Maes Berea, Maes Bleddyn, Maes Coetmor, Maes Isalaw, Maes Mawr, Maes Yr Athro, Maesgeirchen, Menai Avenue, Min Menai, Min Y Coed, Minafon, Minffordd, Moelyci, Mount Street, Mountain Road, Mynydd Llandegai, Nant Ffrancon, Nant Graen, Orme Road, Pant, Pant Glas, Pant Road, Peacock Walk, Pen Y Bryn Road, Pen Y Ffridd Road, Penlon Gardens, Pennant Crescent, Penrallt Isaf, Penrallt Road, Penrhos Avenue, Penrhos Drive, Penrhyn Arms Wood, Penrhyn Park, Pentir, Penybryn, Plas Y Coed, Plas Y Gerddi, Porth Penrhyn, Rachub, Rallt Isaf, Rallt Uchaf, Rhes Sant Paul, Rhiwlas, Rhodfa Dewi Sant, Rhodfa Penrhyn, Rhodfa'r Frenhines, Rhos Uchaf, Rhosfryn, Rhoslan, Seiriol Road, Sling, Snowdon View, St Gerard's School, St James Drive, Station Road, Stryd Fawr, Stryd Jams, Stryd Waterloo, Stryd Yr Eglwys, Tal Gae, Tal-y-bont, Tan Y Coed, Tan Y Garth, Tanysgafell, The Crescent, Toronnen, Treborth Road, Trefonwys, Tregaean, Tregarth, Trem Elidir, Tryfan, Tyddyn Canol, Vaynol Park, Victoria Avenue, Victoria Drive, Victoria Park, Victoria Street, Water Street, Well Street, Wesley Street, West End, William Street, Y Bae, Y Garn, Y Gorlan, Y Rhos, York Place, Yr Elen, Ysgol Cae Top, Ysgol Friars, Ysgol Glanadda, Ysgol Glancegin, Ysgol Gynradd Llanllechid, Ysgol Hirael, Ysgol Tryfan, Ysgol y Faenol, Ysgol y Garnedd

LL58 Bangon, Bangor, Beaumaris, Llanddona, Llanfaes, Llanfihangel, Llanfihangel-ty'n-Sylwy, Llangoed, Isle of Anglesey

LL77 Anglesea, Anglesey, Isle of Anglesey, Llangefni, Llangwyllog, Sir Ynys Môn, Ynys Môn, Isle of Anglesey

SY20 Eglwys-fach, Scyborycoed, Tre-Taliesin, Ceredigion, Pennal, Dinas Mawddwy, Llanymawddwy, Aber Cowarch, Gwynedd, Aberllefenni, Aberllefenny, Cemmaes, Cemmaes Road, Cemmes Road, Corris, Darowen, Machynlleth, Mallwyd, Penegoes, Aberangell, Esgair-geiliog, Llanwrin, Powys