Change of use applications in Gwynedd

There were 114 change of use applications in Gwynedd in the last 12 months. 3 involve HMOs. Of the 42 decided so far, 37 were approved. Change of use covers conversions between planning use classes: shops to flats, offices to homes, houses to HMOs or care homes.

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Showing 23 of 23 applications
25 Sept 2026 Pending 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
18 Sept 2026 Pending 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
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
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
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
8 Sept 2026 View C25/0810/36/LL

BRON Y GADAIR, Pentrefelin, Criccieth, Gwynedd, LL52 0PT

Newid defnydd 4 o feudai amaethyddol segur i lety gwyliau (C6) gyda mynediad newydd o'r brif ffordd. Change of use of 4 redundant agricultural barns t...

Full Planning Gwynedd
7 Sept 2026 In Progress C26/0519/44/CR

TŶ'R PAB, 4 Church Street, Tremadog, Porthmadog, Gwynedd, LL49 9RA

Addasiadau menwol i greu agoriad newydd yn yr eiddo drws nesaf er ymestyn y bywyty presennol ac amnewid ffenestr presennol am ddrws newydd / Internal ...

Listed Building Consent Gwynedd
1 Sept 2026 In Progress C26/0530/40/LL

Land At Y Ffor, Pwllheli, LL53 6UT

Ail-gyflwyniad o cais C25/0202/40/LL newid defnydd ar gyfer gosod 6 Podiau Llety Gwyliau ar dir yn Y Ffor, Pwllheli, Gwynedd, LL53 6UT Re-submission o...

Full Planning Gwynedd
26 Aug 2026 In Progress C26/0518/44/LL

TŶ'R PAB, 4 Church Street, Tremadog, Porthmadog, Gwynedd, LL49 9RA

Newid defnydd rhan o'r llawr daear o dy annedd i ffurfio rhan o'r bwyty presennol / Change of use of part of ground floor of dwelling house to form pa...

Full Planning Gwynedd
26 Aug 2026 Approved 25 Sep C26/0461/38/LL

BRYN ABER Pig Street, Llanbedrog, Pwllheli, Gwynedd, LL53 7NU

Newid defnydd tir amaethyddol i ymestyn y cwrtil preswyl presennol. Change of use of land of agricultural to extend the existing residential curtilage...

Full Planning Gwynedd
21 Aug 2026 In Progress C26/0473/11/LL

The Works, 241 High Street, Bangor, Gwynedd, LL57 1PA

Newid defnydd yr islawr, y siop ar y llawr cyntaf (Dosbarth Defnydd A1) a'r ail lawr i ddefnydd preswyl (C3) er mwyn creu 4 uned breswyl (gan gynnwys ...

Full Planning Gwynedd
20 Aug 2026 In Progress C26/0510/45/LL

TARO DEG New Street, Pwllheli, Gwynedd, LL53 5HH

Newid defnydd o uned fanwerthu wag (Dosbarth A1) i siop tecawê bwyd poeth (Dosbarth A1/A3), gan gynnwys gosod offer echdynnu ac awyru, ramp mynediad, ...

Full Planning Gwynedd
17 Aug 2026 In Progress C26/0501/39/LL

DWYLAN UCHAF, Llanengan, Pwllheli, Gwynedd, LL53 7LL

Newid defnydd garej ar wahân i fragdy bach (Dosbarth B1), a defnyddio rhan o lawr gwaelod y Coach House ar gyfer storio grawn a chynnyrch gorffenedig....

Full Planning Gwynedd
12 Aug 2026 In Progress C26/0493/09/LL

Land Adjacent Gwalia Industrial Units, Gwalia Road, Tywyn, LL36 9DH

Application to change the use of land from vacant industrial land(B1/B2 Use) to form self serve storage facility(B8 Use) / Cais i newid defnydd tir o ...

Full Planning Gwynedd
4 Aug 2026 Withdrawn 17 Sep C26/0467/11/LL

Unit C Bryn Llwyd Works. , Bangor, LL57 4SP

Newid defnydd uned o ddefnydd B1 i D2 gan gynnwys estyniad newydd. Change of use of exisiting unit from B1 to D2 including new extension

Full Planning Gwynedd
4 Aug 2026 In Progress C26/0326/08/LL

Ground Floor Flat, 22 RHINIOG High Street, Penrhyndeudraeth, Gwynedd, LL48 6BN

Newidiadau mewnol ir eiddo a newid defnydd o Dosbarth C3 I Dosbarth A1 / Internal alterations to the property and change of use from Use Class C3 to U...

Full Planning Gwynedd
4 Aug 2026 In Progress C26/0401/11/LL

139 High Street, Bangor, Gwynedd, LL57 1NT

Isrannu'r annedd bresennol ar y llawr uchaf yn ddau fflat preswyl hunangynhwysol. Subdivision of the existing upper-floor dwelling into two self-conta...

Full Planning Gwynedd
29 Jul 2026 In Progress C26/0362/45/LL

Caban Heli, Ystad Ddiwydiannol Glan Y Don, Pwllheli, LL53 5YT

Newid defnydd rhan o adeilad presennol i greu 4 uned newydd ar raddfa fach ar gyfer defnydd hyblyg manwerthu/busnes/di-breswyl, ynghyd ag addasiadau a...

Full Planning Gwynedd
28 Jul 2026 In Progress C26/0438/14/LL

Llywodraeth Cynulliad Cymru, CROWN BUILDING North Penrallt, Caernarfon, Gwynedd, LL55 1EP

Newid defnydd arfaethedig o hen swyddfeydd y llywodraeth yn 37 o fflatiau fforddiadwy ynghyd â chadw swyddfeydd ar gyfer gwasanaethau cymorth, estynia...

Full Planning Gwynedd
23 Jul 2026 In Progress C26/0439/41/LL

Ynys Gain Bach, YNYS GAIN, Llanystumdwy, Criccieth, Gwynedd, LL52 0SA

Mae'r cais yn ymwneud â newid defnydd o'r dosbarth defnydd presennol 'sui generis' i ddosbarth defnydd C3 (annedd breswyl). / The application is for a...

Full Planning Gwynedd
15 Jul 2026 In Progress C26/0422/24/LL

Land Adj To Rhiw Goch, Rhosgadfan, Caernarfon, LL54 7HR

Newid defnydd tir i ffurfio safle glampio eco tymhorol sydd yn cynnwys 5 uned tipi, codi adeilad cyfleusterau/storio ynghyd a gwaith cysylltiedig. Cha...

Full Planning Gwynedd
9 Jul 2026 Approved 11 Sep C26/0178/24/LL

THE GOAT HOTEL, Llanwnda, Caernarfon, Gwynedd, LL54 5SD

Cais ôl-weithredol i newid defnydd o lawr gwaelod o dy tafarn (Dosbarth Defnydd A3) er mwyn ymestyn yr annedd presennol o'r llawr cyntaf i'r llawr gwa...

Full Planning Gwynedd
6 Jul 2026 In Progress C26/0396/44/LL

The Harbourside Clinic, 4 - 5 Corn Hill, Porthmadog, Gwynedd, LL49 9AT

Newid defnydd o meddygfa "osteopath" i ddefnydd cymysg o uned gwyliau ac ystafell gyfarfod i Gyfreithwyr / Change of use from Osteoptath surgery to mi...

Full Planning Gwynedd
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Frequently asked questions

Do you need planning permission to run an HMO?
A small HMO (3-6 unrelated tenants, Class C4) usually doesn't need planning permission unless the area has an Article 4 direction. Larger HMOs (7+ tenants, 'sui generis') almost always need a full planning application.
What is Class E in planning?
Class E is the flexible commercial use class introduced in September 2020. It covers shops, offices, cafes, restaurants, gyms, clinics, nurseries and light industry. You can change uses freely within Class E without planning permission.
Can you convert offices to flats without planning permission?
Class MA permitted development rights let you convert Class E premises (including offices) to residential (Class C3) via a prior-approval application rather than full planning permission. Limits apply: max 1,500m², not in conservation areas or AONBs without additional consent.
Can I get email alerts for new change of use applications in Gwynedd?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new change of use 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 change of use applications appear here within a day of being published.