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Planning applications in LL54

We hold 381 planning applications for the LL54 postcode area, 31 of them submitted in the past year. 90% of decided applications here were approved. A decision typically takes 56 days. The area is covered by Gwynedd, Snowdonia.

381
applications held
31
in the past year
90%
approved
56 days
median decision

Councils covering LL54

Gwynedd (360)Snowdonia (21)

Recent applications in LL54

Pending
28 Jul 2026NP3/12/A167A
Drws-y-Coed Uchaf, Rhyd Ddu. LL54 6TPSnowdonia

Roof over sheep handling area

Pending
Full Planning
20 Apr 2026C26/0246/22/LL
Plots - 3, Stad Ddiwydiannol Penygroes,, Penygroes, LL54 6DBGwynedd

Adeilad diwydiannol cyffredinol/ysgafn a storio arfaethedig B1, B2 and B8. Proposed general/light industrial and storage building B1, B2 and B8.

Permitted
Small
Discharge of Conditions
15 Apr 2026NP3/12/9Q
Eryri National Park Authority Car Park, Llyn Cwellyn, Rhyd Ddu. LL54 7YTSnowdonia

Discharge Condition 3 (Stonework panel) attached to Planning Permission NP3/12/9L dated 21/01/2016

Pending
Householder Planning
7 Apr 2026C26/0221/22/DT
HADDEF, 28 Maes Y Farchnad, Penygroes, Caernarfon, Gwynedd, LL54 6NNGwynedd

Estyniad unllawr cefn Single storey rear extension

Pending
Approval of Details Reserved by Condition
31 Mar 2026C26/0201/37/RA
Land Adj: Llys Yr Eifl, Trefor, LL54 5BJGwynedd

Cais i ryddhau amod 3 ar ganiatâd cynllunio C25/0824/37/LL er mwyn cytuno gorffeniadau allanol / Application to discharge condition 3 on planning approval C25/0824/37/LL in order to agree external finishes.

Pending
Full Planning
23 Mar 2026C26/0187/22/LL
GLANRAFON Lôn Pant Y Gôg, Nebo, Caernarfon, Gwynedd, LL54 6EAGwynedd

Creu 'menage' newydd Creation of a new menage

Pending
Householder Planning
23 Mar 2026C26/0186/22/DT
BRYN LLYFNWY Tŷ'n Y Weirglodd, Penygroes, Caernarfon, Gwynedd, LL54 6RNGwynedd

Dymchwel storfeydd ochr a blaen presennol, ac ychwanegu estyniad ochr a blaen newydd mwy. Demolition of existing side and front stores, and addition of a new larger side and front extension.

Pending
Full Planning
13 Mar 2026C26/0166/19/LL
PEN Y BRYN Llanfaglan Road, Llanfaglan, Caernarfon, Gwynedd, LL54 5RHGwynedd

Adeiladu sied amaethyddol ar gyfer storio gwair/gwellt a pheiriannau gwneud gwair. Construction of agricultural shed for the storage of hay/ straw and hay making machinery.

Pending
Prior Approval (Agri/Forest)
13 Mar 2026C26/0180/22/YA
Maes Mawr Lôn Tŷ Gwyn, Llanllyfni, Caernarfon, Gwynedd, LL54 6DGGwynedd

Ysgubor ar gyfer storio offer ffermio. Barn for the storage of farming equipment.

Pending
Approval of Details Reserved by Condition
10 Mar 2026C26/0159/22/RA
1-12 Tredafydd, Stryd Fawr, Penygroes, LL54 6PWGwynedd

Cais i rhyddhau amod 3 (llechi), 4 (deunyddiau a lliwiau), 6 (cynllun tirlunio a phlannu coed) ar gais cynllunio C19/1089/22/LL. Application to release condition 3 (slates), 4 (materials and colours), 6 (landscaping and tree planting scheme) on planning application C19/1089/22/LL.

Pending
Full Planning
6 Mar 2026C26/0145/37/LL
Village Hall Beach Road, Trefor, Caernarfon, Gwynedd, LL54 5LBGwynedd

Cais llawn i osod paneli solar ar do adeilad Y Ganolfan / Full application to install solar panels on Y Ganolfan's roof

Pending
Small
Advertisement Consent (HY)
5 Mar 2026C26/0146/34/HY
Petrol Station Clynnog Fawr, Clynnog Fawr, LL54 5NLGwynedd

Cais ôl-weithredol ar gyfer arddangos 2 arwydd Adnabod Prisiau union yr un fath sy'n gysylltiedig â gorsaf betrol Clynnog Fawr, yn cynnwys 1 arwydd annibynnol o fewn y blaengwrt ac 1 arwydd annibynnol ar dir i'r De o'r pentref. Retrospective application for the display of 2 identical Price Identification signs associated with the Clynnog Fawr petrol filling station, comprising 1 No. freestanding sign within the forecourt and 1 No. freestanding sign on land to the South of the village.

Pending
Householder Planning
26 Feb 2026C26/0129/17/DT
1, Bryn Gwenallt Lôn Pen Bonc, Y Groeslon, Caernarfon, Gwynedd, LL54 7UBGwynedd

Estyniad llawr cyntaf i'w hadeiladu uwchben yr estyniad llawr gwaelod presennol. First floor extension to be constructed above existing ground floor extension.

Pending
Householder Planning
23 Feb 2026C26/0111/17/DT
Arlwyn, 2, Grugan Terrace, Y Groeslon, Caernarfon, Gwynedd, LL54 7TDGwynedd

Ffenestr gromen ail lawr cefn yr eiddo i greu ystafell wely ychwanegol. Second floor dormer to the rear of the property to create an additional bedroom.

Pending
Full Planning
17 Feb 2026C26/0106/24/LL
Yr Hen Bost, Rhostryfan, Caernarfon, Gwynedd, LL54 7NSGwynedd

Newid defnydd o gyn swyddfa bost i gyfleuster gofal plant ar gyfer uchafswm o 18 o blant. Change of use from former post office into child care facility for a maximum of 18 children.

Pending
Householder Planning
13 Feb 2026C26/0099/37/DT
7 Bron Hendre Estate, Trefor, Caernarfon, Gwynedd, LL54 5HLGwynedd

Codi modurdy unllawr wedi’i hatodi i ochr y ty bresennol. Construction of a single-storey garage attached to the side of the existing dwelling

Pending
Householder Planning
10 Feb 2026C26/0077/24/DT
Ty Hen Llanwnda, Caernarfon, LL54 5SDGwynedd

Addasiadau ac estyniad i'r eiddo ac ail-greu trac cerbydol (defnyddio'r hen drac) / Alterations and extension to dwelling and re-instate access track (utilising old track)

Pending
Householder Planning
3 Feb 2026C26/0058/24/DT
Llys Menai, Rhos Isaf, Caernarfon, Gwynedd, LL54 7NEGwynedd

Adeiladu modurdy / storfa breifat Erection of Private Garage/Store

Pending
Full Planning
29 Jan 2026C26/0050/22/LL
Calafria Chapel Stryd Y Capel, Penygroes, Caernarfon, Gwynedd, LL54 6PAGwynedd

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,

Pending
Full Planning
29 Jan 2026C26/0049/24/LL
Land Adjacent To Y Llofft Flawd, Rhosgadfan, LL54 7ETGwynedd

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

Permitted
Medium
Screening Opinion
29 Jan 2026C26/0060/34/SC
CEFN GRAIANOG, Llanllyfni, Caernarfon, Gwynedd, LL54 6SYGwynedd

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

Pending
Full Planning
28 Jan 2026C26/0045/22/YA
Bryn Llys Mawr Ffordd Cors Y Llyn, Nebo, Caernarfon, Gwynedd, LL54 6EHGwynedd

Adeiladu sied amaethyddol Construction of an agricultural shed.

Pending
Householder Planning
26 Jan 2026C26/0037/17/DT
Glanwel, Carmel, Caernarfon, Gwynedd, LL54 7ARGwynedd

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

Pending
Approval of Details Reserved by Condition
16 Jan 2026C26/0022/17/RA
Coleg Llandrillo, Glynllifon College, Llandwrog, Caernarfon, Gwynedd, LL54 5DUGwynedd

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

Pending
Householder Planning
15 Jan 2026C26/0020/24/DT
24, Chatham Log Cabins, Llandwrog, Caernarfon, Gwynedd, LL54 5TGGwynedd

Estyniad unllawr ochr bwriededig Proposed single storey side extension

Pending
Householder Planning
18 Dec 2025C25/0936/24/DT
Allt Wen, FFRWD CAE DU, Bontnewydd, Caernarfon, Gwynedd, LL54 7YGGwynedd

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.

Pending
Householder Planning
17 Nov 2025C25/0839/22/DT
31 Coed Madog, Talysarn, Caernarfon, Gwynedd, LL54 6HRGwynedd

Estyniad deulawr i gefn y ty. Two-storey extension to the rear of the property.

Pending
Medium
Full Planning
12 Nov 2025C25/0824/37/LL
Land Adj: Llys Yr Eifl, Trefor, LL54 5BJGwynedd

Cais llawn i adeiladu 15 tŷ fforddiadwy gyda datblygiadau cysylltiedig gan gynnwys creu mynedfa gerbydol newydd a ffordd stad, tirlunio a chreu ardal draenio dwr wyneb cynaliadwy / Full application for the erection of up to 15 No. Affordable Dwellings and Associated Development including creation of a new vehicular access and estate road, landscaping and creation of a sustainable surface water drainage area.

Permitted
Non-Material Amendment
22 Oct 2025C25/0770/17/DA
Coleg Llandrillo, Glynllifon College, Llandwrog, Caernarfon, Gwynedd, LL54 5DUGwynedd

Cais am ddiwygiad ansylweddol i newid geiriad amod rhif 9 o ganiatâd C22/0953/17/LL er mwyn newid edrychiad y to o gorchudd dur proffil lliw gwyrdd tywyll i orchudd sment rhychiog a gosod cladin carreg o fath "Wildstone Champagne Quarts 814" ar yr edrychiad deheuol cyn defnyddio'r adeilad, ynghyd â thynnu ffenestr cylch oddi ar yr edrychiad deheuol. Non-material amendment to application C22/0953/17/LL to vary wording of condition 9 in order to replace the profiled steel roof with a corrugated cement sheeting and place stone cladding of type "Wildstone Champagne Quarts 814" on the southern elevation prior to the use of the building along with the removal of the round window from the southern elevation.

Conditions
Small
Discharge of Conditions
22 Oct 2025NP3/12/96T
Planwydd, Rhyd Ddu. LL54 7YSSnowdonia

Discharge Condition Nos. 3 (Construction and Environmental Management Plan), 4 (lighting management plan), 5 (biodiversity enhancement measures) & 8 (slate) attached to Planning Permission NP3/12/96S dated 22/07/2025

Withdrawn
Householder Planning
11 Oct 2025C25/0741/24/DT
Y Garth, Llanwnda, Caernarfon, Gwynedd, LL54 7YBGwynedd

Codi estyniad deulawr i gefn yr eiddo. Erection of a two-storey extension to the rear of the property.

Pending
Full Planning
24 Sept 2025C25/0694/17/LL
Bryn Menai, Y Fron, Caernarfon, Gwynedd, LL54 7PTGwynedd

Ymestyn tŷ annedd presennol i mewn i cyn swyddfa bost. Extension of existing dwelling into former post office.

Pending
Householder Planning
10 Sept 2025C25/0644/37/DT
32, Croeshigol Terrace Croeshigol Road, Trefor, Caernarfon, Gwynedd, LL54 5HTGwynedd

Gosod pump gwres Riello. Installation of Riello heat pump

Pending
Prior Notification of Proposed Demolition
29 Aug 2025C25/0616/25/HD
Depot Store Building, , Dinas, LL54 5UDGwynedd

Dymchwel adeilad bric ac adeilad dur segur. Demolition of disused brick and corrugated clad building

Pending
Householder Planning
29 Aug 2025C25/0615/34/DT
Afallon, Clynnog Fawr, Caernarfon, Gwynedd, LL54 5BTGwynedd

Codi adeilad gardd / Erect garden building.

Pending
Prior Notification of Proposed Demolition
29 Aug 2025C25/0616/24/HD
Depot Store Building, , Dinas, LL54 5UDGwynedd

Dymchwel adeilad bric ac adeilad dur segur. Demolition of disused brick and corrugated clad building

Pending
Non-Material Amendment
8 Jul 2025C25/0502/37/DA
1 Green Terrace, Trefor, Caernarfon, Gwynedd, LL54 5HFGwynedd

Cais diwygiad ansylweddol i ganiatâd cynllunio C25/0317/37/DT ar gyfer ail leoli gosodiad y pwmp aer. An application for a non-material amendment to planning permission C25/0317/37/DT in order to relocate the position of the air source heat pump.

Pending
Householder Planning
7 Jul 2025C25/0500/24/DT
4 Minffordd Terrace, Rhos Isaf, Caernarfon, Gwynedd, LL54 7NFGwynedd

Estyniad cefn dwy lawr ac addasiadau i adeilad allanol. Rear two storey extension and alterations to outhouse.

Refused
Householder Planning
20 Jun 2025C25/0461/37/DT
14 New Street, Trefor, Caernarfon, Gwynedd, LL54 5HEGwynedd

Cais i osod paneli solar ar y tô / Application to install roof mounted Solar Photovoltaic Panels

Refused
Approval of Details Reserved by Condition
20 Jun 2025C25/0468/17/RA
Coleg Llandrillo, Glynllifon College, Llandwrog, Caernarfon, Gwynedd, LL54 5DUGwynedd

Cais i rhyddhau amod 9 (gorffeniad allanol) ar ganiatad cynllunio C22/0953/17/LL Application to discharge condition 9 (external finish) on planning permisison C22/0953/17/LL

Permitted
Lawful Development Certificate Existing/Proposed
6 Jun 2025C25/0417/24/TC
Land At Ceiriog Belan, Rhos Isaf, Caernarfon, LL54 7NDGwynedd

Cais tystysgrif datblygiad cyfreithiol ar gyfer cychwyn gwaith yn ymwneud a chaniatad cynllunio C14/0276/24/LL ar gyfer codi ty annedd fforddiadwy a chreu mynediad cerbydol newydd / Lawful use application in relation to commencement of works on planning permission C14/0276/24/LL for the erection of a new affordable dwelling house and new vehicular access.

Withdrawn
Full Planning
6 May 2025C25/0351/34/LL
Capel Ebeneser, , Clynnog Fawr, LL54 5BTGwynedd

Newid defnydd cyn gapel yn dy annedd / Change of use of former chapel into dwelling house

Conditions
Small
Full
25 Apr 2025NP3/12/T8C
Tan-yr-Wyddfa, Rhyd Ddu. LL54 6TNSnowdonia

Installation of external insulation cladding to east and west elevations

Pending
Full Planning
25 Apr 2025C25/0327/22/LL
Rhan O Llain 8 A 9 Stad Diwydiannol, Penygroes, LL54 6DBGwynedd

Adeiladu 2 uned diwydiannol ysgafn, storio a dosbarthu. Y cyfan o fewn Dosbarth defnydd B1, B2 a B8. Erection of two light industrial, storage and distribution units. All to be Class B1 ,B2 and B8

Refused
Full Planning
24 Apr 2025C25/0329/37/LL
Cae Croppa, Trefor, Caernarfon, Gwynedd, LL54 5LUGwynedd

Cais am sied amaethyddol i gadw peiriannau ac offer yn ymwneud a cynnal a chadw y tir a cadw ceffylau / Construction of new agricultural shed for storing equipment / machinery associated with maintenance of land and keeping horses.

Pending
Full Planning
23 Apr 2025C25/0322/37/LL
Tŷ Glandwr, Siop Glandwr Croeshigol Road, Trefor, Caernarfon, Gwynedd, LL54 5HPGwynedd

Cais llawn i newid defnydd eiddo preswyl i swyddfeydd masnachol / Full application for a change of use from domestic property to commercial offices

Pending
Householder Planning
21 Apr 2025C25/0318/37/DT
Cae Croppa, Trefor, Caernarfon, Gwynedd, LL54 5LUGwynedd

Dymchwel sied bresenol, wc a storfa a chodi estyniad deulawr yn ei le ar yr ochr ogledd orllewinol. Estyniad unllwr a tho gwastad i'r cefn gyda balconi uwchben / Demolition of existing shed, wc and store and construction of new two-storey side extension on the north western elevation and a single storey rear extension with rear flat roof and balcony. above

Pending
Householder Planning
17 Apr 2025C25/0317/37/DT
1 Green Terrace, Trefor, Caernarfon, Gwynedd, LL54 5HFGwynedd

Cais i osod pwmp gwres a phaneli solar pv / Application to install an air source heat pump and solar pv panels.

Pending
Listed Building Consent
14 Apr 2025C25/0298/17/CR
Parc Lôn Cilgwyn, Cilgwyn, Gwynedd,Gwynedd

Addasiadau ac estyniadau i dy annedd / Alterations and extensions to dwelling house

Pending
Full Planning
9 Apr 2025C25/0279/24/LL
Cefn Hendre, Dolydd, Caernarfon, Gwynedd, LL54 7YAGwynedd

Datblygu Adeilad Amaethyddol. Development of Agricultural building