Search Gwynedd Council planning applications

Search current and historic planning applications published by Gwynedd Council - 187 applications in the last 90 days across 49 towns and areas and 16 postcode districts. Filter applications by date, status, development type, or number of homes, view them on the map, or create a free alert for new applications.

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Source: Gwynedd Council·Updated daily·Last checked 7 Oct 2026

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Areas: Bangor 17Abersoch 13Aberdaron 10Pwllheli 9Caernarfon 8Llanddeiniolen 8Llanbedrog 6Llanengan 6
All 187 Pending 158Approved 26Withdrawn 1Other decisions 2
Showing 50 of 187 applications
2 days ago In Progress C26/0471/15/TC

CRAIG Y NOS Church Lane, Llanberis, Caernarfon, Gwynedd, LL55 4TF

Cais tystysgrif cyfreithlon er mwyn cadarnhau dechreuad materol bod caniatâd ddymchwel estyniad ar gweithdy presennol ac adeiladu estyniad newydd yngh...

Lawful Development Certificate Existing/Proposed Gwynedd
View details Council site ↗
5 Oct 2026 In Progress C26/0594/40/DT

GWYDDFOR, Rhosfawr, Pwllheli, Gwynedd, LL53 6YA

Adeiladu estyniadau unllawr ochr a chefn / Construction of side and rear single storey extensions

Householder Planning Gwynedd
View details Council site ↗
5 Oct 2026 In Progress C26/0596/25/CC

CAE GARNEDD Penrhos Road, Penrhosgarnedd, Gwynedd, LL57 2PS

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

Work on Protected Trees (TPO Consent) Gwynedd
View details Council site ↗
1 Oct 2026 In Progress C26/0063/34/CR

AFALLON, Clynnog Fawr, Caernarfon, Gwynedd, LL54 5BT

Gosod pwmp aer ar ochr yr eiddo / Siting of air source heat pump to the side of the property.

Listed Building Consent Gwynedd
View details Council site ↗
1 Oct 2026 In Progress C26/0591/39/DT

BRYN HEDD, Mynytho, Pwllheli, Gwynedd, LL53 7RF

Dymchwel yr estyniad un llawr presennol i’r cefn a chodi estyniad un llawr newydd yn ei le, gyda balconi uwchben a grisiau allanol. / Proposed demolit...

Householder Planning Gwynedd
View details Council site ↗
30 Sept 2026 In Progress C26/0451/15/DT

8 Blaen Y Ddôl, Llanberis, Caernarfon, Gwynedd, LL55 4TL

Codi estyniad llawr cyntaf unllawr gyda tho fflat ar ben y to fflat presennol. Erection of a first-floor flat-roof extension above the existing flat r...

Householder Planning Gwynedd
View details Council site ↗
29 Sept 2026 In Progress C26/0586/17/DT

1, CHURCH COTTAGES, Llandwrog, Caernarfon, Gwynedd, LL54 5TB

Cais ar gyfer swyddfa gartref yn yr ardd gefn. Application for a home office in the rear garden.

Householder Planning Gwynedd
View details Council site ↗
29 Sept 2026 In Progress C26/0587/25/RA

TAN Y GRISIAU Lôn Tan Y Grisia, Pentir, Bangor, Gwynedd, LL57 4YB

Rhyddhau amodau 3 (llechi), 7 (tanc septig), 8 (mesurau rheoli y broses adeiladu) a 10 (arolwg ffotograffig) ar ganiatâd cynllunio C25/0158/25/LL. Dis...

Approval of Details Reserved by Condition Gwynedd
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29 Sept 2026 In Progress C26/0572/45/HD

Cyn Milfeddygon Deufor, Yr Ala, Pwllheli, LL53 5BU

Dymchwel adeilad presennol / Demolition of existing building.

Prior Notification of Proposed Demolition Gwynedd
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29 Sept 2026 In Progress C26/0192/45/LL

TOWER HOTEL YARD Stryd Y Llan, Pwllheli, Gwynedd, LL53 5RR

Trosi ac adfer yr adeiladau allanol yn ddefnydd cymysg o unedau storio, busnes ac uned byncws gyda addasaidau mewnol ac allanol i'r adeiladau / Conver...

Full Planning Gwynedd
View details Council site ↗
28 Sept 2026 In Progress C26/0585/39/DT

TREE TOPS, 13 Tan Y Gaer, Abersoch, Pwllheli, Gwynedd, LL53 7LY

Amnewid balconi. Replacement balcony.

Householder Planning Gwynedd
View details Council site ↗
28 Sept 2026 In Progress C26/0560/45/LL

Ystad Morfa Garreg,, Pwllheli, LL53 5AU

Mae'r datblygiad arfaethedig yn cynnwys adeiladu dau faes parcio newydd oddi ar y briffordd o fewn ystâd breswyl Morfa Garreg, a fydd yn darparu cyfan...

Full Planning Gwynedd
View details Council site ↗
25 Sept 2026 In Progress C26/0582/00/DT

BRYN GWYNT, Llanaber, Barmouth, Gwynedd, LL42 1AZ

Estyniad unllawr / Single storey extension.

Householder Planning Gwynedd
View details Council site ↗
25 Sept 2026 In Progress C26/0583/04/LL

CRYNIERTH BACH, Cefn Ddwysarn, Y Bala, Gwynedd, LL23 7LN

Newid defnydd caeau amaethyddol i greu ardal ymarfer corff i gwn sydd yn gaeedig / Change of use of agricultural fields to create an enclosed dog exer...

Full Planning Gwynedd
View details Council site ↗
25 Sept 2026 In Progress C26/0571/18/LL

TYDDYN BERTH, Bethel, Caernarfon, Gwynedd, LL55 3PS

Codi caban addysgu unllawr ffrâm bren, gan gynnwys ardal decing wedi’i orchuddio a ramp mynediad hygyrch, at ddibenion addysg gymunedol, hyfforddiant,...

Full Planning Gwynedd
View details Council site ↗
24 Sept 2026 In Progress C26/0575/39/RA

Venetia, VENETIA Lôn Sarn Bach, Abersoch, Pwllheli, Gwynedd, LL53 7EB

Cais i rhyddhau amodau (3), (4) a (5) o ganiatâd cynllunio C24/0031/39/LL yn ymwneud a (3) lliw llechi (4) gorffeniad allanol a (5) Cynllun Rheoli Ade...

Approval of Details Reserved by Condition Gwynedd
View details Council site ↗
24 Sept 2026 In Progress C26/0573/37/DT

GLANFA Beach Road, Trefor, Caernarfon, Gwynedd, LL54 5LB

Estyniad cefn deu lawr. Rear two storey extension.

Householder Planning Gwynedd
View details Council site ↗
24 Sept 2026 In Progress C26/0576/30/AM

FFERM PENCAERAU, Pencaerau, Pwllheli, Gwynedd, LL53 8AR

Cais amlinellol i godi annedd menter wledig (Dosbarth Defnydd C3), gosod gwaith trin carthion a gwaith cysylltiedig. Outline application for the erect...

Outline Planning Permission - All/Some Matters Reserved Gwynedd
View details Council site ↗
24 Sept 2026 In Progress C26/0546/25/LL

Uned 8 Llys Onnen, Bangor, LL57 4DF

Cais ôl-weithredol ar gyfer un uned aerdymheru a lleoli tair uned aerdymheru arfaethedig ychwanegol wedi'u osod ar y wal gefn. Retrospective applicati...

Full Planning Gwynedd
View details Council site ↗
23 Sept 2026 In Progress C26/0441/11/CR

93 High Street, Bangor, Gwynedd, LL57 1NS

Addasiadau mewnol ynghyd ag ymestyn yr estyniad cefn presennol / Internal alterations together with extending the existing rear extension

Listed Building Consent Gwynedd
View details Council site ↗
23 Sept 2026 In Progress C26/0569/14/RA

NATIONAL TYRE & AUTOCARE Bank Quay, Caernarfon, Gwynedd, LL55 1SU

Rhyddhau amod 3 o cais rhybudd o flaen llaw ar gyfer dymchwel modurdy C26/0115/14/HD. Discharge condition 3 of Prior notification for the demolition o...

Approval of Details Reserved by Condition Gwynedd
View details Council site ↗
22 Sept 2026 In Progress C26/0541/14/CR

HEN GWRT Castle Ditch, Caernarfon, Gwynedd, LL55 2AY

Addasiadau mewnol ynghyd a gosod uned gyddwysydd ar y cefn / Internal alterations together with installing a condenser unit to the rear

Listed Building Consent Gwynedd
View details Council site ↗
21 Sept 2026 In Progress C26/0568/39/DT

YNYS FAWR Lôn Engan, Abersoch, Pwllheli, Gwynedd, LL53 7LB

Codi modurdy sengl ar wahân o flaen yr annedd bresennol. Construction of detached single garage in front of existing bungalow.

Householder Planning Gwynedd
View details Council site ↗
21 Sept 2026 In Progress C26/0544/43/LL

LLITHFAEN ISAF, Llithfaen, Pwllheli, Gwynedd, LL53 6NW

Ty unllawr gyda 3 ystafell wely modurdy arhwahan i'r ty ar safle tir rhwng Tegfryn a Creigle Llithfaen Single-storey dwelling with 3 bedrooms and a de...

Full Planning Gwynedd
View details Council site ↗
21 Sept 2026 In Progress C26/0565/39/DT

TYN Y MAES, Mynytho, Pwllheli, Gwynedd, LL53 7RL

Dymchwel garej sengl ac adeiladu garej dwbwl deulawr. Demolition of single garage and construction of double two storey garage.

Householder Planning Gwynedd
View details Council site ↗
18 Sept 2026 In Progress C26/0567/41/LL

Hafan Y Mor Holiday Park, Pwllheli, LL53 6HX

Cais cynllunio ar gyfer ymestyn tymor gweithredu'r parc gwyliau. / Planning application to allow the extension of the operating season of the holiday ...

Full Planning Gwynedd
View details Council site ↗
18 Sept 2026 In Progress C26/0564/35/DT

DERWEN Stanley Road, Criccieth, Gwynedd, LL52 0EH

Estyniad a newidiadau i’r sied bresennol / Extension and alterations to the existing shed.

Householder Planning Gwynedd
View details Council site ↗
18 Sept 2026 Approved 25 Sep C26/0562/04/LL

PALE HALL HOTEL, Llandderfel, Y Bala, Gwynedd, LL23 7PS

Cais ol-weithredol i newid defnydd cyn stabl yn ddefnydd gampfa a cyfleuster lles yn gysylltiedig a'r gwesty / Retrospective application for the chang...

Full Planning Gwynedd
View details Council site ↗
18 Sept 2026 In Progress C26/0563/04/CR

PALE HALL HOTEL, Llandderfel, Y Bala, Gwynedd, LL23 7PS

Cais ol-weithredol i wneud addasiadau mewnol ac allanol i cyn-stabal i ddefnydd gampfa a chyfleuster lles / Retrospective application to undertake int...

Listed Building Consent Gwynedd
View details Council site ↗
18 Sept 2026 In Progress C25/0364/14/LL

Tir Ger / Land By Teiars Gwynedd, Ffordd Santes Helen, Caernarfon, Gwynedd, LL55 2YD

Adeiladu gorsaf MOT a depo teiar. Erection of MOT centre and tyre depot.

Full Planning Gwynedd
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18 Sept 2026 In Progress C26/0534/39/LL

MYNYTHO HALL, Mynytho, Pwllheli, Gwynedd, LL53 7RF

Dymchwel adeiladau allanol a chodi estyniad deulawr a chanopi allanol wrth ymyl y prif neuadd, newid defnydd rhannol o’r ardal y tu ôl i lwyfan y brif...

Full Planning Gwynedd
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18 Sept 2026 In Progress C26/0540/14/LL

HEN GWRT Castle Ditch, Caernarfon, Gwynedd, LL55 2AY

Gosod uned gyddwysydd ar gefn yr adeilad/ Install condenser unit to rear

Full Planning Gwynedd
View details Council site ↗
18 Sept 2026 In Progress C25/0851/00/AM

FRONOLEU VILLAS, Llanaber, Gwynedd, LL42 1YY

Cais amlinellol ar gyfer codi 3 tŷ fforddiadwy (3 ystafell wely) Outline application for the erection of 3 affordable dwellings (3 bedroom )

Outline Planning Permission - All/Some Matters Reserved Gwynedd
View details Council site ↗
17 Sept 2026 In Progress C26/0413/14/CR

14 Castle Square, Caernarfon, Gwynedd, LL55 2NF

Addasiadau mewnol ac allanol i drosi'r adeilad / Internal and external alterations to convert building

Listed Building Consent Gwynedd
View details Council site ↗
16 Sept 2026 In Progress C26/0535/23/DT

Isallt, 2 Tai Craig Y Don, Cwm Y Glo, LL55 4DL

Adeiladu modurdy gyda gofod gweithio llawr cyntaf Construct a garage with first floor workroom

Householder Planning Gwynedd
View details Council site ↗
16 Sept 2026 In Progress C26/0556/38/RA

PENARWEL Lôn Bribwll, Llanbedrog, Pwllheli, Gwynedd, LL53 7NN

Rhyddhau amod rhif 5 (cofnod ffotograffic) ar ganiatad rhif C24/1118/38/CR / Discharge condition no 5 (photographic record) on consent no C24/1118/38/...

Approval of Details Reserved by Condition Gwynedd
View details Council site ↗
16 Sept 2026 In Progress C26/0557/38/RA

PENARWEL Lôn Bribwll, Llanbedrog, Pwllheli, Gwynedd, LL53 7NN

Rhyddhau amod rhif 10 (manylion ffliw a fent) ar ganiatad rhif C24/1118/38/CR / Discharge condition no 10 (flue and vent details) on consent no C24/11...

Approval of Details Reserved by Condition Gwynedd
View details Council site ↗
16 Sept 2026 In Progress C26/0558/38/RA

PENARWEL Lôn Bribwll, Llanbedrog, Pwllheli, Gwynedd, LL53 7NN

Rhyddhau amod rhif 13 (manylion diogelu nodweddion mewnol) ar ganiatad rhif C24/1118/38/CR / Discharge condition no 13 (details to protect internal fe...

Approval of Details Reserved by Condition Gwynedd
View details Council site ↗
15 Sept 2026 In Progress C26/0553/18/AC

SCHOOL HOUSE, Deiniolen, Caernarfon, Gwynedd, LL55 3HH

Cais i ddiwygio amod 2 (cynlluniau a gymeradwywyd) o ganiatâd cynllunio C25/0143/18/LL ar gyfer newid defnydd hostel (defnydd unigryw) i lety gwyliau ...

Removal/Variation of Condition(s) Gwynedd
View details Council site ↗
15 Sept 2026 In Progress C26/0529/35/LL

Plas Newydd Residential Home, PLAS NEWYDD High Street, Criccieth, Gwynedd, LL52 0RR

Addasiadau, estyniadau ac ailfodelu Cartref Gofal Plas Newydd Alterations, extensions and remodelling Plas Newydd Care Home

Full Planning Gwynedd
View details Council site ↗
15 Sept 2026 In Progress C26/0551/17/CR

CAER EGLWYS, Llandwrog, Caernarfon, Gwynedd, LL54 5SY

Amnewid 9 ffenestr pren presennol a drysau dwbl gyda rhai newydd pren gydag unedau dwbl / Replace 9 existing timber windows and double doors with new ...

Listed Building Consent Gwynedd
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14 Sept 2026 In Progress C26/0492/20/AC

FERN BANK, 3 Trem Y Foel, Y Felinheli, Gwynedd, LL56 4UZ

Cais i ddiwygio amod 2 (cynlluniau a gymeradwywyd) o ganiatâd cynllunio C26/0108/20/DT ar gyfer dymchwel ystafell haul presennol a chodi estyniad unll...

Removal/Variation of Condition(s) Gwynedd
View details Council site ↗
14 Sept 2026 In Progress C26/0203/30/CR

CARREG PLAS, Aberdaron, Pwllheli, Gwynedd, LL53 8LH

Gosod pwmp aer wrth ochr yr eiddo / Install heat pump to side of main dwelling

Listed Building Consent Gwynedd
View details Council site ↗
14 Sept 2026 In Progress C26/0495/30/DT

CARREG PLAS, Aberdaron, Pwllheli, Gwynedd, LL53 8LH

Gosod Uned pwmp aer ar ochr modurdy presennol ac wrth yr eiddo ynghyd a gosod paneli solar ar y ddaear / Siting of one heat pump by the existing garag...

Householder Planning Gwynedd
View details Council site ↗
14 Sept 2026 In Progress C26/0538/15/LL

Land Adjacent To 10 Warden Street, Llanberis, LL55 4HP

Codi annedd newydd. Erection of new dwelling

Full Planning Gwynedd
View details Council site ↗
14 Sept 2026 In Progress C26/0388/30/DT

BRYN MÔR Lôn Uwchmynydd, Aberdaron, Pwllheli, Gwynedd, LL53 8BS

Disodli to rhan unllawr. Ychwanegu ffenestri to i'r prif do. Ychwanegu paneli solar. Newid trefniant ffenestri. Tynnu carafán sefydlog presennol ac ad...

Householder Planning Gwynedd
View details Council site ↗
11 Sept 2026 In Progress C26/0550/44/AC

Tir Ger / Land By 2 Bron Afon, , Borth Y Gest, LL49 9TU

Diwygio Amod 2 o ganiatâd cynllunio C25/0440/44/LL er mwyn caniatáu cynlluniau diwygiedig. / Variation of Condition 2 of Planning permission C25/0440/...

Removal/Variation of Condition(s) Gwynedd
View details Council site ↗
11 Sept 2026 In Progress C26/0548/30/DT

YSGUBOR ISAF, Rhydlios, Pwllheli, Gwynedd, LL53 8LP

Estyniad unllawr. Single storey extension.

Householder Planning Gwynedd
View details Council site ↗
11 Sept 2026 In Progress C26/0549/36/CC

Tŷ Gwyn Pentrefelin, Pentrefelin, LL52 0PY

Gwaith i goed sydd yn destyn gorchymyn gwarchod coed. Works to trees which are the subject of a Tree Preservation Order

Work on Protected Trees (TPO Consent) Gwynedd
View details Council site ↗
11 Sept 2026 In Progress C26/0525/18/DT

RHOS AERON, Seion, Caernarfon, Gwynedd, LL55 3AL

Codi estyniad unllawr a balconi, ynghyd ag addasiadau cysylltiedig. Erection of single storey extension & balcony, along with associated alterations.

Householder Planning Gwynedd
View details Council site ↗
Recency
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1–2 months
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Browse by application type

Planned new homes in Gwynedd (90)House extensions in Gwynedd (293)Change of use applications in Gwynedd (114)Solar and renewables in Gwynedd (26)Demolition plans in Gwynedd (96)

Towns and areas

Bangor (17)Abersoch (13)Aberdaron (10)Pwllheli (9)Caernarfon (8)Llanddeiniolen (8)Llanbedrog (6)Llanengan (6)
All towns and areas in Gwynedd (49)
AberdaronAbersochArthogBangorBarmouthBethesdaBetws GarmonBlaenau FfestiniogBontnewyddBotwnnogCaeathroCaernarfonChwilogClynnogCricciethDolbenmaenFfestiniogHafan y MorLlanbedrogLlanberisLlanddeiniolenLlandderfelLlandygaiLlanenganLlanllechidLlannorLlanrugLlanwndaLlanystumdwyMachroesMorfa BychanMorfa NefynMynythoNefynPenisa'r WaunPenrhyndeudraethPentirPistyllPorthmadogPwllheliRhostryfanTalysarnTreforTrefor a LlanaelhaearnTremadogTudweiliogTywynWaunfawrY Felinheli
Postcode districts in Gwynedd (16)
LL21LL23LL36LL39LL41LL42LL48LL49LL51LL52LL53LL54LL55LL56LL57SY20

Nearby councils

Snowdonia (99) · Anglesey (198) · Conwy (196) · Ceredigion (194) · Denbighshire (96)

Decisions in Gwynedd Full decision record →

92daysmedian to decide40 days slower than UK
30%decided within 8 weeks40 pts below UK
88%approved2 pts below UK
364of 366UK rank for speeddown 352 places on last year

698 decisions in the 12 months to September 2026 · 5% went to committee. Days run from validation to decision, the clock councils report against; Plota live figures.

Frequently asked questions

How long does Gwynedd Council take to decide a planning application?
Across the 698 applications Gwynedd Council decided in the last 12 months, the median time from validation to decision was 92 days, and 30% were decided within 8 weeks. The UK median over the same period is 52 days.
What proportion of planning applications does Gwynedd Council approve?
88% of the applications Gwynedd Council decided in the last 12 months were approved. Withdrawn applications are not counted as decisions.
Where does this planning application data come from?
Every application on this page comes from Gwynedd Council's public planning register (amg.gwynedd.llyw.cymru). Plota collects it, adds a map location and a category, and links each record back to the council's own entry, which is the authoritative version.
How often is this page updated?
Plota checks Gwynedd Council's register every day and adds new applications, status changes and decisions as the council publishes them. The register was last checked on 7 Oct 2026.
Where can I see the plans and documents for an application?
Plans, drawings and officer reports are held on Gwynedd Council's own website. Where the council publishes a document list, it appears on the application's page here with each item linking to the council's copy; otherwise the "View original council record" link on every application opens the council's entry.

About this data

Plota holds 1,122 current planning applications from Gwynedd Council, received since 17 Apr 2018, 187 of them in the last 90 days. Behind them, the Plota archive holds 10,999 earlier applications from Gwynedd Council, 2016 to 2025, searchable by location and keyword. Current records are collected from the council's public register at amg.gwynedd.llyw.cymru and checked every day; the last check was on 7 Oct 2026. Each record carries the council's reference, address, proposal, dates, status and decision, with a map location and Plota's classification by type and procedure added. The council's own record is the authoritative version; every entry here links to it.

Latest application from Gwynedd: 5 Oct 2026. We check the council's portal daily.