House Extension planning applications in Wales

Covers householder extension applications — single-storey rear and two-storey side extensions, loft conversions and dormers, wraparound extensions, porches, garage conversions, outbuildings and garden rooms, orangeries and conservatories.

1,695 last 90 days
|
683 last 30 days
|
422 last 14 days
Showing 50 of 1,695 applications
PL/10928 Yesterday Pending

23 Heol Capel Ifan, Pontyberem, Llanelli, SA15 5HF

Demolition of existing dwelling to construct extension for existing dwelling for ancillary accommodation for elderly relative

Householder planning permission Carmarthenshire
PL/10962 Yesterday Pending

Penybryn, Felinfoel, Llanelli, SA14 8EZ

Proposed roof renewal to include attic truss

Householder planning permission Carmarthenshire
18/2026/0239/HH Yesterday Pending

LLWYN HELYG Whitchurch Road, Llandyrnog, Denbigh, Denbighshire, LL16 4ET

Codi estyniad, addasiadau a gwaith cysylltiedig (ailgyflwyno) / Erection of extension, alterations and associated works (resubmission)

Householder Application Denbighshire
04/2026/0240/PF Yesterday Pending

Agricultural Building, BRYN DREINIOG, Derwen, Corwen, Denbighshire

Estyniad i adeilad amaethyddol presennol ar gyfer da byw ar wellt a storfa beiriannau / Extension to existing agricultural building for livestock on s...

Full Planning Application Denbighshire
43/2026/0242/HH Yesterday Pending

22 Derwent Close, Prestatyn, Denbighshire, LL19 7TT

Codi estyniadau unllawr i flaen, cefn ac ochr yr annedd a gwaith cysylltiedig / Erection of single storey extensions to front, rear and side of dwelli...

Householder Application Denbighshire
A260309 Yesterday Pending

Glanteifi Industrial Estate Llanwnnen, SA48 7JY

Erection of replacement 2.4m palisade fencing and 2.4m palisade gate.

Full Planning Ceredigion
P/2026/0080 Yesterday Pending

4, PENRHIW GARREG BUNGALOW Penrhiwgarreg Road, Abertillery, Blaenau Gwent, NP13 1BG

Proposed construction of an elevated double driveway to the rear of the property to provide off street parking

Householder Application Blaenau Gwent
FUL/000491/26 2 days ago Pending

1, Brookleigh Avenue, Mancot, Deeside, CH5 2BB

rear/side 2 storey extension front porch and driveway/hardstanding replacemnt ro

Full - Building Works Flintshire
PL/10893 2 days ago Pending

Cwmgwen, Pencader, SA39 9HE

The renovation and extension of a listed farmhouse. The renovation of an attached agricultural range as well as the renovation of an agricultural barn...

Full planning permission Carmarthenshire
PL/10920 2 days ago Pending

Glenview, Heol Blaengwastod, Llangunnor, Carmarthen, SA31 2LE

Proposed removal of existing conservatory / flat roofs - retain existing main roof and include new hipped roofs where existing flat roofs were located...

Householder planning permission Carmarthenshire
PL/10922 2 days ago Pending

6 Stradey Road, Llanelli, SA15 4ET

Replace existing glass conservatory with extension and a first storey extension over existing ground floor extension to the side elevation. Propose to...

Householder planning permission Carmarthenshire
PL/10581 2 days ago Pending

Blaenblodau, Dryslwyn, Carmarthen, SA32 8RN

Internal renovation and extension to create open plan living on the ground floor with the additional space enhancing links to the garden.

Householder planning permission Carmarthenshire
PL/10601 2 days ago Pending

Troedrhiw Rhydwen, Rhandirmwyn, Llandovery, SA20 0PL

Change of use of existing barn to provide ancillary accommodation annex to main dwelling house

Full planning permission Carmarthenshire
0/53442 2 days ago Pending

Cumberland House Market Street Abergele LL22 7AG

New (extended) shop front, change of use from bakery (A3) to retail showroom (A1), subdivision of unit to form smaller retail unit and conversion of u...

Conwy
01/2026/0233/PF 2 days ago Pending

PLOUGH INN Bridge Street, Denbigh, Denbighshire, LL16 3TF

Ffurfio dihangfa dan allanol newydd, ynghyd a ffens rhwyll; codi canopi to polycarbonad dros y brif fynedfa a gwaith cysylltiedig / Formation of a new...

Full Planning Application Denbighshire
01/2026/0234/LBC 2 days ago Pending

PLOUGH INN Bridge Street, Denbigh, Denbighshire, LL16 3TF

Ffurfio dihangfa dan allanol newydd, ynghyd a ffens rhwyll; codi canopi to polycarbonad dros y brif fynedfa a gwaith cysylltiedig (cais Adeilad Rhestr...

Listed Building Consent Denbighshire
22/2026/0238/LP 2 days ago Pending

HOMEACRE, Llanychan, Ruthin, Denbighshire, LL15 1TY

Tystysgrif datblygiad cyfreithlon ar gyfer yr estyniad newydd arfaethedig i ddisodli ystafell haul; ailosod canopi'r fynedfa flaen yn rhannol, a chlad...

Certificate of Lawfulness for a Proposed Use / Development Denbighshire
02/2026/0196/LBC 2 days ago Pending

Cyril Arnold & Co, 5A Castle Street, Ruthin, Denbighshire, LL15 1DP

Amnewid 2 ffenestr bren cefn ar y llawr cyntaf, ffenestr gefn ar y llawr gwaelod i ddrws Ffrengig, tynnu ffenestr ochr a thynnu wal stydiau anstrwythu...

Listed Building Consent Denbighshire
P/2026/0109 2 days ago Pending

UNIT G, Ebbw Vale, Blaenau Gwent

Proposed placing of storage cabins on industrial land, with new fence, external lighting, solar panels, CCTV and associated works

Full Planning Permission Blaenau Gwent
P/2025/0227 2 days ago Pending

RED LION HOTEL High Street, Blaina, Abertillery, Blaenau Gwent, NP13 3BN

CHANGE OF USE TO GROUND FLOOR PUBLIC HOUSE TO RETAIL USE , EXTERNAL ALTERATIONS AT GROUND FLOOR, CONVERT FIRST FLOOR EXISITNG RESIDENTIAL INTO 2NO. RE...

Full Planning Permission Blaenau Gwent
FUL/000471/26 3 Jun 2026 Pending

GREGGS, A55 Eb Brookside To Ewloe, Ewloe, Mold, CH7 6HF

Small extension to the side of a Greggs shop to provide a staff toilet.

Full - Building Works Flintshire 3 Jun 2026
26/0142/PA 3 Jun 2026 Pending

Baglan Farm, MARTLETWY, Narberth, Pembrokeshire, SA67 8AW

Alterations and extension to dwelling and erection of garage.

Full Pembrokeshire 3 Jun 2026
0/53435 3 Jun 2026 Pending

Poppins Nant Y Gamar Road Craig Y Don Llandudno LL30 3BD

Enhancements to front elevation including new feature boxed bay window to match existing and new dormer roof window.

Conwy 3 Jun 2026
0/53436 3 Jun 2026 Pending

Land Adjacent to Green Top Towyn Way East Towyn Conwy LL22 9NB

Change of use of land to form extension to residential curtilage and construction of residential ameninty building

Conwy 3 Jun 2026
FUL/000480/26 3 Jun 2026 Pending

Isfryn, Station Road, Bagillt, Flint, CH6 6AF

Single storey extension to rear & side elevations

Full - Building Works Flintshire 3 Jun 2026
PL/10909 3 Jun 2026 Pending

48 Pentre Nicklaus Village, Llanelli, SA15 2DE

Converting existing attic space to habitable rooms and a bathroom. Flush-fitting Velux rooflights to be installed to front and rear elevations

Lawful development Carmarthenshire 3 Jun 2026
C26/0272/11/CR 3 Jun 2026 Pending

Shoe Zone, 256 High Street, Bangor, Gwynedd, LL57 1PA

Addasiadau mewnol i drosi rhan o'r llawr daear a'r lloriau uchod yn 6 uned byw a gosod blaen siop newydd / Internal alterations to convert part of gro...

Listed Building Consent Gwynedd 3 Jun 2026
2026/00312/FUL 2 Jun 2026 Pending

167 Stanwell Road, Penarth

The proposal is to convert the existing front garden into a driveway for off-street parking. The proposal also includes the installation of a dropped ...

Glamorgan 2 Jun 2026
P/26/256/FUL 2 Jun 2026 Pending

2 The Willows, Heol-Y-Cyw, Bridgend, CF35 6LL

Two storey front extension; single storey, flat roof rear extension & balcony; rear flat roof dormer to loft space; upgrade of fenestration throughout...

Bridgend 2 Jun 2026
P/26/293/FUL 2 Jun 2026 Pending

7 Tymeinwr Avenue, Blaengarw, CF32 8NE

First floor rear extension and renovations/re-building existing single storey extension including new flat roof

Bridgend 2 Jun 2026
DM/2026/00687 2 Jun 2026 Pending

20 Priory Gardens Usk Monmouthshire NP15 1AJ

Garage conversion and rear extension - infill.

Monmouthshire 2 Jun 2026
26/0384/HH 2 Jun 2026 Pending

2 Ashgrove Hengoed CF82 7JN

Erect two storey rear extension

Caerphilly 2 Jun 2026
26/0383/HH 2 Jun 2026 Pending

Woodland Cottage Cwmnofydd Farm Lane Machen Caerphilly CF83 8NR

Erect two storey rear extension

Caerphilly 2 Jun 2026
2026/0919/PRE 2 Jun 2026 Pending

69 Lan Coed Winch Wen Swansea SA1 7LR

Pre-application enquiry - Construction of rear single storey extension with pitched roof

Swansea 2 Jun 2026
2026/0913/PRE 2 Jun 2026 Pending

121 Belgrave Road Gorseinon Swansea SA4 6RE

Pre-application enquiry - Proposed two storey side extension

Swansea 2 Jun 2026
26/01131/HSE 2 Jun 2026 Pending

67 Windermere Avenue Cyncoed Cardiff CF23 5PS

Rear dormer and hip to gable roof.

Cardiff 2 Jun 2026
FUL/000483/26 2 Jun 2026 Pending

26, Queensway, Shotton, Deeside, CH5 1HT

New rear raised decking

Full - Building Works Flintshire 2 Jun 2026
DM/2026/00686 2 Jun 2026 Pending

1A St Mary's Street Monmouth Monmouthshire NP25 3DB

Change of use from A1 to A2 commercial use for firm of Solicitors or similar. In addition, simpler design for minor alterations to s/w wall with intro...

Monmouthshire 2 Jun 2026
PL/10704 2 Jun 2026 Pending

25 Llannon Road, Upper Tumble, Llanelli, SA14 6BW

Proposed installation of two number demountable units, one number welfare and one number storage unit joined, complete with a link corridor located at...

Full planning permission Carmarthenshire 2 Jun 2026
PL/10908 2 Jun 2026 Pending

30 Rawlings Road, Llandybie, Ammanford, SA18 3YD

Proposed single storey rear extension to dwelling house

Householder planning permission Carmarthenshire 2 Jun 2026
CB/1996/0370 2 Jun 2026 Penderfyniad wedi’i wneud / Decision Made

Three Tuns Brewery Place

REFURBISHMENT* ALTERATIONS & EXTENSIONS TO ENABLE THE BUILDING TO BE PUT TO A VIABLE USE AS THE NEW B.R. CLUB CB00370

Caniatâd adeilad rhestredig (addasu/estyn) / Listed building consent (Alt/Ext) Wrexham 2 Jun 2026
CB/1996/0369 2 Jun 2026 Penderfyniad wedi’i wneud / Decision Made

Three Tuns Brewery Place

REFURBISHMENT* ALTERATIONS & EXTENSIONS & CAR PARK FOR B.R. CLUB CB00369

Caniatâd Cynllunio Llawn / Full planning permission Wrexham 2 Jun 2026
CB/1996/0345 2 Jun 2026 Penderfyniad wedi’i wneud / Decision Made

16 New Street Rhos

EXTENSION TO FORM ADDITIONAL LIVING ACCOMMODATION FOR ELDERLY MOTHER CB00345

Caniatâd Cynllunio Llawn / Full planning permission Wrexham 2 Jun 2026
P2026/0347 1 Jun 2026 Pending

25 Vivian Park Drive Sandfields Neath Port Talbot SA12 6RT

Demolition of existing rear conservatory and detached garage/outbuilding and construction of a single-storey rear extension with flat roof and rooflig...

Neath 1 Jun 2026
26/P/0232/HH 1 Jun 2026 Pending

9 Bryn Heulog Griffithstown Pontypool Torfaen NP4 5SU

Ground Floor Wet Room & Utility Extension

Torfaen 1 Jun 2026
26/0380/CLPU 1 Jun 2026 Pending

Land Adjacent To 55 Hill View Pontllanfraith Blackwood NP12 2EL

Obtain Certificate of Lawfulness to remove part of the grass verge for a dropped kerb and tarmac driveway

Caerphilly 1 Jun 2026
2026/00379/FUL 1 Jun 2026 Pending

11 Lynmouth Drive, Sully

Amendments to approved dwelling 2025/00604/FUL to include a self contained annex for elderly parent within the footprint of the dwelling plus an exten...

Glamorgan 1 Jun 2026
P/26/291/FUL 1 Jun 2026 Pending

85 Ystrad Fawr, Bridgend, CF31 4HW

Retrospective consent for a new boundary fence erected along the front side boundary of Number 85 and 87 Ystrad Fawr

Bridgend 1 Jun 2026
26/01114/CLPUD 1 Jun 2026 Pending

80 Heol Uchaf Rhiwbina Cardiff CF14 6SR

Hip to gable and rear dormer roof extension.

Cardiff 1 Jun 2026
26/01118/FUL 1 Jun 2026 Pending

Cardiff University 6 Museum Place Cathays Cardiff CF10 3BG

Retrospective Planning Application for Single-Storey Storage Unit, AC Units, and First-Floor Pergola.

Cardiff 1 Jun 2026
Recency
Last 2 weeks
2-4 weeks
1-2 months
Older

Get free email alerts for new extensions applications in Wales

Set up alerts

Frequently asked questions

When do you need planning permission for a house extension?
Single-storey rear extensions up to 4m (detached) or 3m (semi-detached / terraced) are usually permitted development. Two-storey extensions, anything in a conservation area, or larger projects almost always need a planning application.
What's the difference between planning permission and permitted development?
Permitted development rights let you build certain things without applying for planning permission, subject to specified limits. Anything outside those limits — taller, larger, in a protected area — needs full planning permission.
How long does a householder application take?
The statutory target is 8 weeks from validation. Most simple householder extensions are decided within that window; complex or contested cases (especially with objections) can take longer.
Can I get email alerts for extensions planning applications anywhere in Wales?
Yes. Click the "Set up alerts" button on this page and you'll get a daily (or weekly) email listing every new extensions application submitted anywhere in Wales. No need to pick a postcode or draw a map — pick the category once, choose your frequency, and we'll do the rest.

Extensions planning applications elsewhere

Data updated daily across Wales's active councils.