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.

1,632 last 90 days
|
491 last 30 days
|
194 last 14 days

Filter applications

Date received Last 90 days

Pick a year, or click two to span the range between them. Records before 2026 come from the archive.

Keywords in the address or description
Match

Literal text matches. For application types (extensions, solar, change of use...) use the categories above - no need to recreate them as keywords.

Showing 50 of 1,632 applications
43/2026/0281/HH Yesterday Pending

16 Berwyn Crescent, Prestatyn, Denbighshire, LL19 7UH

Codi estyniad deulawr yn y cefn ac addasiadau i'r annedd / Erection of a two storey extension to rear and alterations to dwelling

Householder Application Denbighshire
44/2026/0280/HH Yesterday Pending

12 Highlands Close, Rhuddlan, Rhyl, Denbighshire, LL18 2RU

Adeiladu mynedfa newydd i gerbydau oddi ar Highlands Close; addasiadau i'r fynedfa bresennol i gerbydau oddi ar Ffordd Ganol gan ddarparu cilfannau gw...

Householder Application Denbighshire
45/2026/0284/HH Yesterday Pending

8 Llys Bodnant, Rhyl, Denbighshire, LL18 4DQ

Addasiadau ac adeiladu estyniadau un llawr i flaen yr annedd (cynllun diwygiedig o'i gymharu â'r un a gymeradwywyd o dan y cod rhif 45/2025/0292/HH) /...

Householder Application Denbighshire
A260383 Yesterday Pending

35 Great Darkgate Street, Aberystwyth, SY23 1DE

Replacement of inappropriate concrete roof tiled finish for natural slating; replacement of upvc rainwater goods for period cast iron items; and repla...

Listed Building Consent Ceredigion
A260385 Yesterday Pending

MAESYMOR, Parcllyn, Cardigan, Ceredigion, SA43 2DR

- Side extension and re-roof of an existing flat roofed garage - Toilet within garage - Window and door re-organisation

Householder Planning Ceredigion
C26/0371/22/DT Yesterday Pending

BOD YCHAIN ISAF, Nasareth, Caernarfon, Gwynedd, LL54 6DR

Codi estyniad unllawr ‘lean to’ i gefn yr eiddo a chodi estyniad deulawr i’r ochr Erect a single-storey lean to extension to the rear of the property ...

Householder Planning Gwynedd
P/2026/0106 Yesterday Pending

1 Coates Row, Rassau, Ebbw Vale, Blaenau Gwent, NP23 5DD

Two storey replacement side extension

Householder Application Blaenau Gwent
P/2026/0138 Yesterday Pending

ABERTILLERY WORKMENS WELFARE INSTITUTE Division Street, Abertillery, Blaenau Gwent, NP13 1EF

Change of use from Abertillery Miners Welfare Club to the Abertillery Stute, involving the relocation of main entrance from Powell Street to Division ...

Full Planning Permission Blaenau Gwent
PL/11068 Yesterday Under Consultation

Brynrodyn, Peniel, Carmarthen, SA32 7DJ

Replace 3 kerbs on north side of the existing entrance in order to allow clear / easier access to the property and resurface the existing tarmac pavem...

Householder planning permission Carmarthenshire
PL/11080 Yesterday Under Consultation

National Woollen Museum, Velindre, Llandysul, SA44 5UP

The proposed works involve installing an internal glazed airlock to the western entrance of the long yard

Listed building consent Carmarthenshire
PL/11105 Yesterday Under Consultation

6 Rawlings Road, Llandybie, Ammanford, SA18 3YD

Demolish existing single storey side extension to 2 storey dwelling and rear garden shed. Construct new 2 storey side and rear extension with associat...

Householder planning permission Carmarthenshire
19/2026/0133/LP 2 days ago Certify

BRYNGERDDI, Llanelidan, Ruthin, Denbighshire, LL15 2RB

Tystysgrif datblygiad cyfreithlon ar gyfer ystafell ardd arfaethedig / Lawful development certificate for a proposed garden room

Certificate of Lawfulness for a Proposed Use / Development Denbighshire
C26/0388/30/DT 2 days ago Pending

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
FUL/000533/26 2 days ago Pending

The Old Telephone Exchange, Rhosesmor Road, Halkyn, Holywell, CH8 8DL

Proposed side and rear extension and re-ordering works to facilitate the replace

Full - Building Works Flintshire
P/2026/0130 2 days ago Pending

2, ADEN VILLAS Southend, Tredegar, Blaenau Gwent, NP22 4JW

Removal of existing rear conservatory and replace with single storey extension

Householder Application Blaenau Gwent
PL/11092 2 days ago Under Consultation

Banc Rhydygwili, Lotwen Road, Capel Hendre, Ammanford, SA18 3RP

Demolish existing barn and replace with new annex and domestic workshop / garage

Householder planning permission Carmarthenshire
0/53502 6 Jul 2026 REGISTERED

15 Maes Rhun Tyn Y Groes Conwy LL32 8PA

Erection of side/rear extension, with infill, part conversion of existing garage

Conwy 6 Jul 2026
0/53503 6 Jul 2026 REGISTERED

Palo Seco 51 Pen Y Bryn Road Upper Colwyn Bay Colwyn Bay Conwy LL29 6AG

Certificate of Lawfulness for the proposed construction of a single storey detached garden room and ancillary facilities ancillary to existing dwellin...

Conwy 6 Jul 2026
26/0456/CLPU 6 Jul 2026 Pending

38 Graig-y-fedw Abertridwr Caerphilly CF83 4AR

Obtain a Lawful Development Certificate for proposed single storey rear extension

Caerphilly 6 Jul 2026
FUL/000344/26 6 Jul 2026 Pending

Tegfan Court, High Street, Caergwrle, LL12 9ES

2 New external escape stairs to flats 3 and 6.

Full - Building Works Flintshire 6 Jul 2026
LBC/000575/26 6 Jul 2026 Pending

HENDY GROES, Llanasa, Holywell, CH8 9LZ

Replace stable style oak back door with solid hardwood back door, replace curren

Listed Building Extensions and Alterations Flintshire 6 Jul 2026
2026/00293/FUL 5 Jul 2026 Pending

15 Anchor Road, Penarth

Replacement of rear balcony for a larger area

Glamorgan 5 Jul 2026
2026/00396/FUL 5 Jul 2026 Pending

Sunbeams, Twyncyn, Dinas Powys

Application to vary/remove a condition - Condition 2 ( Plan Specification) of 2022/00268/FUL -Conversion of existing property to four apartments. Prop...

Glamorgan 5 Jul 2026
2026/00484/FUL 5 Jul 2026 Pending

Holm House, Marine Parade, Penarth

Proposed installation of external ice baths, sauna, hot tub, changing facility and associated plant ancillary to existing hotel operations

Glamorgan 5 Jul 2026
FPL/2025/254 5 Jul 2026 Valid

Hawddmor, Llaneilian

Cais llawn ar gyfer codi modurdy ar wahân arfaethedig, ynghyd â chadw estyniad ôl-weithredol i'r cwrtil preswyl presennol, mynedfa newydd i gerbydau a...

Full Planning Permission Anglesey 5 Jul 2026
HHP/2026/102 5 Jul 2026 Valid

Brynaddfed, Bodedern

Cais llawn ar gyfer codi balconi a garej ar wahan yn / Full application for the erection of a balcony and a detached garage at

Householder planning permission Anglesey 5 Jul 2026
HHP/2026/108 5 Jul 2026 Valid

Rhoslyn, Rhosmeirch

Cais llawn ar gyfer codi ports newydd yn / Full application for erection of a porch at

Householder planning permission Anglesey 5 Jul 2026
HHP/2026/67 5 Jul 2026 Valid

27 Ger Y Môr / Whispering Sands, Rhosneigr

Cais llawn ar gyfer addasu ag ehangu yn /Full application for alterations and extensions at

Householder planning permission Anglesey 5 Jul 2026
MAO/2026/24 5 Jul 2026 Valid

Sea Breeze, Lon Penrallt, Bae Trearddur / Sea Breeze, Penrallt Road, Trearddur Bay

Mân newidiadau i gynllun a gymeradwywyd yn flaenorol o dan ganiatâd cynllunio HHP/2026/36 (addasu ac ehangu yn cynnwys dymchwel y garej/anecs presenno...

PLANNING PORTAL - Non-Material Amendment Anglesey 5 Jul 2026
P/26/275/FUL 5 Jul 2026 -

1 Park Avenue, Ogmore Vale, CF32 7DH

Single storey rear extension & garage at rear boundary

Bridgend 5 Jul 2026
P/26/316/FUL 5 Jul 2026 -

30 Cae Llwydcoed, Broadlands, Bridgend, CF31 5ES

Installation of a freestanding pergola to the rear garden, next to the house with a size of 4m x 3m

Bridgend 5 Jul 2026
P/26/344/FUL 5 Jul 2026 -

14 Tennyson Drive, Cefn Glas, Bridgend, CF31 4PU

Front and rear dormer with the construction of a gable wall and flat roof extension to side and rear

Bridgend 5 Jul 2026
P/26/356/FUL 5 Jul 2026 -

102A Victoria Avenue, Porthcawl, CF36 3HA

Demolition of existing garage, erection of a single storey rear/side extension and internal alterations to provide wheelchair-accessible accommodation...

Bridgend 5 Jul 2026
P/26/360/FUL 5 Jul 2026 -

26A St Marys Crescent, Garth, Maesteg, CF34 0UX

First floor side extension above existing ground floor extension, and to construct a second bay window to ground floor of side extension to match exis...

Bridgend 5 Jul 2026
P/26/363/FUL 5 Jul 2026 -

36 Songthrush Road, Broadlands, Bridgend, CF31 5FR

Proposed double storey side extension to existing dwelling

Bridgend 5 Jul 2026
SCR/2026/29 5 Jul 2026 Under Review

Drws y Coed, Ffordd Biwmares, Glyn Garth / Drws y Coed, Beaumaris Road, Glyn Garth

Barn Sgrinio ar gyfer creu mynedfa gerbydau newydd a man parcio ar dir gyferbyn / Screening opinion for the creation of a new vehicular access and pa...

Screening Opinion Anglesey 5 Jul 2026
2026/00460/LAW 4 Jul 2026 Pending

Church Cottage, A48 Bonvilston, Bonvilston

Proposed Lawful Development Application for the Change of the Roof Covering from Thatch to a Slate/Tile

Glamorgan 4 Jul 2026
2026/00492/FUL 4 Jul 2026 Pending

Ty Fry Lodge, Lane From Hensol Cottage To The Old Barn, Pendoylan

Demolition of existing detached single-storey annexe outbuilding and replacement with single-storey structure extending main house to provide living r...

Glamorgan 4 Jul 2026
26/0594/FUL 3 Jul 2026 Pending Decision

74 Francis Street Thomastown Tonyrefail Rhondda Cynon Taf CF39 8DR

Vehicular crossover of a public footway and off road parking

Full Application Rhondda 3 Jul 2026
C26/0373/39/DT 3 Jul 2026 Pending

Tawelfa, Llwyn Onn Estate, Abersoch , LL53 7EP

Cais am addasiadau ac estyniadau i ailfodelu'r annedd bresennol drwy:- estyniad ochr a chefn, addasiadau i'r to i greu llety ar y llawr cyntaf a gwell...

Householder Planning Gwynedd 3 Jul 2026
C26/0392/09/LL 3 Jul 2026 Pending

THE VICTORIA-N-SLIPWAY Marine Parade, Tywyn, Gwynedd, LL36 0DG

Estyniad i Dŷ Tafarn ynghyd â gwaith allanol cysylltiedig / Extension to Public House and associated external works

Full Planning Gwynedd 3 Jul 2026
DM/2026/00814 3 Jul 2026 Pending Consideration

14 St Helen's Crescent Llanellen NP7 9HN

Dormer roof extension to front of property.

Householder Monmouthshire 3 Jul 2026
FUL/000538/26 3 Jul 2026 Pending

Hill Cottage, Moel Y Crio, Mold, CH7 6PY

**Proposed Renovation and Minor Extension to Existing Cottage** The proposal see

Full - Building Works Flintshire 3 Jul 2026
FUL/000574/26 3 Jul 2026 Pending

14, Sunnyside, Mancot, Deeside, CH5 2BE

Build new orangery extension to rear of property

Full - Building Works Flintshire 3 Jul 2026
P/26/208/FUL 3 Jul 2026 -

44 Glanyrafon Road Pencoed Bridgend CF35 5PR

Proposed two storey rear extension

Bridgend 3 Jul 2026
P/26/351/FUL 3 Jul 2026 -

Ael-Y-Don Ty-Fry Road, Cefn Cribwr, Bridgend, CF32 0BB

Remove existing windows on front elevation & side elevation and replace with full height sliding glass door and panels

Bridgend 3 Jul 2026
P/26/358/LAP 3 Jul 2026 -

23 St Marys Crescent, Garth, Maesteg, CF34 0UX

Build a single storey extension to rear of dwelling measuring 3.45m x 3.5m.

Bridgend 3 Jul 2026
PL/11066 3 Jul 2026 Under Consultation

78 Tal Y Coed, Hendy, Swansea, SA4 0XR

Conversion of existing garage into habitable space

Householder planning permission Carmarthenshire 3 Jul 2026
PL/11098 3 Jul 2026 Under Consultation

Glancloidach, Nantgaredig, Carmarthen, SA32 7PA

Erection of building to create functionally linked ancillary space to the main dwelling, as a redesign of a previously approved scheme

Householder planning permission Carmarthenshire 3 Jul 2026
PL/11101 3 Jul 2026 In Review

14 Bryn Isaf, Llanelli, SA14 9EX

Proposed single storey rear extension

Lawful development Carmarthenshire 3 Jul 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.