Demolition plans in Gwynedd

95 demolition applications were submitted in Gwynedd in the last 12 months, from garages and outbuildings to whole buildings. Of the 56 decided so far, 53 were approved. Demolish-and-rebuild schemes also appear under planned new homes.

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Showing 24 of 24 applications
29 Sept 2026 In Progress C26/0572/45/HD

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

Dymchwel adeilad presennol / Demolition of existing buuilding.

Prior Notification of Proposed Demolition Gwynedd
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
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
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
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
8 Sept 2026 In Progress C26/0504/11/DT

21 Orme Road, Bangor, Gwynedd, LL57 1AY

Dymchwel estyniad unllawr cefn presennol ac adeiladu estyniad deulawr cefn yn ei le. Demolish existing single storey rear extension and construct a re...

Householder Planning Gwynedd
2 Sept 2026 In Progress C26/0531/32/DT

DOLAFON, Botwnnog, Pwllheli, Gwynedd, LL53 8RF

Modurdy newydd arfaethedig i ddisodli modurdy a thŷ haf presennol. Proposed new garage to replace an existing garage and summerhouse

Householder Planning Gwynedd
2 Sept 2026 In Progress C26/0527/26/DT

10 Bryn Y Gof, Caeathro, Caernarfon, Gwynedd, LL55 2TA

Dymchwel rhan o gefn yr annedd ac adeiladu estyniad unllawr yng nghefn yr annedd. Demolition of part of the rear of the dwelling and the erection of a...

Householder Planning Gwynedd
1 Sept 2026 In Progress C26/0528/30/DT

BRYN MAWR, Anelog, Pwllheli, Gwynedd, LL53 8BT

Dymchwel estyniadau presennol, adeiladu estyniad cefn ac ochr deulawr i gynnwys addasiadau. Demolition of existing extensions, construction of rear an...

Householder Planning Gwynedd
1 Sept 2026 In Progress C26/0524/00/DT

24 Marine Road, Barmouth, Gwynedd, LL42 1NS

Cais i ddymchwel estyniad unllawr presennol ac adeiladu estyniad newydd deulawr / Application to demolish existing single storey side extension and bu...

Householder Planning Gwynedd
28 Aug 2026 In Progress C25/0740/20/EIA

Land At And Adjacent To The Former Ferodo Site, Griffiths Crossing, Caernarfon, LL55 1TP

Cais amlinellol gyda holl faterion wedi eu cadw'n ol ar gyfer dymchwel adeiladau a strwythurau presennol, ailraddio'r tir a codi adeilad canolfan data...

Environmental Impact Assessment Gwynedd
19 Aug 2026 Approved 30 Sep C26/0476/19/DT

21 Dôl Beuno, Bontnewydd, Caernarfon, Gwynedd, LL55 2UE

Dymchwel adeilad allanol a chodi estyniad deulawr cefn Demolish outbuilding and construct a two storey rear extension

Householder Planning Gwynedd
11 Aug 2026 In Progress C26/0463/39/DT

DOLPHIN COTTAGE, Bwlchtocyn, Pwllheli, Gwynedd, LL53 7BT

Dymchwel y modurdy presennol a chodi modurdy newydd ar wahân, ynghyd â chodi rhan o do'r annedd er mwyn creu balconi/ardal decin uchel ar lefel y llaw...

Householder Planning Gwynedd
10 Aug 2026 In Progress C26/0465/24/LL

NODDFA, Dolydd, Caernarfon, Gwynedd, LL54 7YA

Dymchwel annedd ac adeilad allanol presennol. Adeiladu annedd newydd yn ei le a modurdy ddwbl ar wahân. Demolition of existing dwelling and outbuildin...

Full Planning Gwynedd
7 Aug 2026 Approved 18 Sep C26/0474/39/DT

CRAIG Y DON Lôn Golff, Abersoch, Pwllheli, Gwynedd, LL53 7EF

Cais cynllunio ôl-weithredol ar gyfer dymchwel garej bresennol ac adeiladu garej newydd o fewn cwrtil y tŷ annedd er mwyn darparu lle storio atodol. R...

Householder Planning Gwynedd
6 Aug 2026 In Progress C26/0469/39/DT

HAFOD Y COED Lôn Sarn Bach, Abersoch, Pwllheli, Gwynedd, LL53 7EL

Dymchwel y modurdy bresennol ac adeiladu garej newydd gyda estyniad llawr cyntaf uwch ei phen i ddarparu 2 ystafell wely / Demolishion of existing gar...

Householder Planning Gwynedd
31 Jul 2026 In Progress C26/0297/26/AC

TAN Y BRYN, Waunfawr, Caernarfon, Gwynedd, LL55 4BZ

Cais i ddiwygio amod 2 o ganiatâd cynllunio C18/0856/26/LL ar gyfer gwaith adnewyddu ar y bwthyn presennol gan gynnwys gwaith dymchwel waliau, newidia...

Removal/Variation of Condition(s) Gwynedd
31 Jul 2026 In Progress C26/0459/39/LL

RHIW BENNAR Lôn Pen Cei, Abersoch, Pwllheli, Gwynedd, LL53 7AY

Dymchwel tŷ annedd presennol a codi tŷ annedd newydd. Demolition of existing dwelling and erection of replacement dwelling.

Full Planning Gwynedd
27 Jul 2026 In Progress C26/0405/30/LL

MÔR AWELON, Uwchmynydd, Pwllheli, Gwynedd, LL53 8DA

Dymchwel annedd a modurdy presennol, codi annedd a modurdy newydd yn eu lle (dosbarth defnydd C3), creu mynediad cerbydol newydd, ynghyd â datblygiada...

Full Planning Gwynedd
23 Jul 2026 In Progress C26/0370/42/LL

NEFYN GOLF CLUB Lôn Golff, Morfa Nefyn, Pwllheli, Gwynedd, LL53 6DA

Dymchwel cwt presennol a chodi adeilad clwbdy ieuenctid newydd yn ei le Demolish existing shed and construct a new replacement juior clubbhouse buildi...

Full Planning Gwynedd
17 Jul 2026 Approved 30 Sep C25/0865/00/LL

CARTREF BACH Panorama Road, Barmouth, Gwynedd, LL42 1DQ

Adeiladu annedd newydd a dymchwel yr un presennol. The erection of a new dwelling and demolition of the existing.

Full Planning Gwynedd
16 Jul 2026 In Progress C26/0424/44/LL

MADOG STREET WEST Madog Street, Porthmadog, Gwynedd

Cais i chwalu hen storfa sydd mewn cyflwr bregus a chodi adeilad storio newydd / Application to demolish existing store which is in poor conditon and ...

Full Planning Gwynedd
10 Jul 2026 In Progress C26/0408/22/DT

84 Ffordd Hyfrydle, Talysarn, Caernarfon, Gwynedd, LL54 6HF

Dymchwel yr estyniad cefn presennol. Codi estyniad deulawr i gefn yr eiddo. Demolish existing rear extension. Erection of a two-storey extension to th...

Householder Planning Gwynedd
8 Jul 2026 In Progress C26/0404/00/DT

CADER BETTI Panorama Road, Barmouth, Gwynedd, LL42 1DQ

Newidiadau i'r to, ychwanegu balconi, a dymchwel rhan o'r adeilad / Changes to the roof, addition of a balcony, demolition of part of the building

Householder Planning Gwynedd
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Frequently asked questions

Do you need planning permission to demolish a building?
Most demolition outside conservation areas is permitted development under Part 11 of the GPDO, but you must submit a prior-approval application covering method and restoration. Demolition of dwellinghouses always needs prior approval, even where permitted development applies.
What is a 'replacement dwelling' application?
Planning permission to demolish an existing dwelling and replace it with a new one. The principle is not automatic: councils assess the replacement against local policy on impact, scale, design and any heritage or rural-character considerations.
Can I get email alerts for new demolition applications in Gwynedd?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new demolition application published by Gwynedd. You can also narrow the alert to a postcode, street, or drawn area.

We check Gwynedd's planning portal daily. New demolition applications appear here within a day of being published.