House Extension planning applications in Northern Ireland

Search house extension, loft conversion, and dormer applications by postcode, town, street, address, council, or planning reference.

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.

1,004
|
298
|
134

Filter applications

Date receivedLast 90 days
Date receivedLast 90 days
Select one year, or two for a range.
Number of homesAny
StatusAny
Application routeAny
KeywordsNone
Match

Matches words or phrases in the application address and description.

Showing 50 of 1,004 applications
LA09/2026/0872/LDP 20 Aug 2026 Awaiting decision

14 Roughan Road, Stewartstown BT71 5PV

Proposed CLUD for a Shed within the residential curtilage of the property

LD Certificate Proposed Mid Ulster 20 Aug 2026
LA09/2026/0870/F 20 Aug 2026 Awaiting decision

36 Lowertown Road Dungannon BT71 6QJ

Ground floor extension to rear of dwelling with minor external and internal alterations to existing dwelling.

Full Mid Ulster 20 Aug 2026
LA07/2026/0988/F 20 Aug 2026 Valid

2 Warrenpoint Road, Newry, BT34 2PF

Change of use of former day care centre (Class D1) to 50 bedroom nursing home (Class C3) at 2 Warrenpoint Road, Newry. This includes proposed extensi...

Full Newry Mourne Down 20 Aug 2026
LA02/2026/0613/F 20 Aug 2026 Consultation Open

82 Shore Road, Greenisland, Carrickfergus, BT38 8UE

Second floor extension to side of dwelling

Full Mid East Antrim 20 Aug 2026
LA07/2026/0993/F 20 Aug 2026 Valid

3 Woodvale, Bessbrook, Newry, BT35 7FD

Extension to dwelling

Full Newry Mourne Down 20 Aug 2026
LA09/2026/0868/RM 19 Aug 2026 Awaiting decision

18 Templereagh Road Stewartstown Dungannon

Temporary Fence

Reserved Matters Mid Ulster 19 Aug 2026
LA09/2026/0867/F 19 Aug 2026 Awaiting decision

32 Ballydermot Road Castledawson BT45 8BT

Single storey rear extension and associated works to existing dwelling

Full Mid Ulster 19 Aug 2026
LA05/2026/0667/F 19 Aug 2026 Valid

10 Monaville Gradens, Tonagh, Lisburn, BT28 2DE

Proposed demolition of existing garage, construction of new single storey side and rear pitched roof extensions and associated site works

Full Lisburn And Castlereagh 19 Aug 2026
LA05/2026/0666/LBC 19 Aug 2026 Valid

23 Ballinderry House 23 Lower Ballinderry Road, Ballinderry, Lisburn, BT28 2JH

Demolition and rebuilding/set back of part of existing wall and metal railings to facilitate visibility splay

Listed Building Consent Lisburn And Castlereagh 19 Aug 2026
LA04/2026/1457/F 19 Aug 2026 Site Inspection Complete

95 Hawthorn Glen, Belfast, BT17OWH

Two storey side and rear extension and single storey extension

Full Belfast 19 Aug 2026
LA07/2026/0979/F 18 Aug 2026 Valid

Immediately NW of 27a, Leestone Road, Kilkeel, Newry, BT34 4NW

Change of House Type for LA07/2024/1424/Fand Domestic Garage

Full Newry Mourne Down 18 Aug 2026
LA10/2026/0801/F 18 Aug 2026 Under Consideration

21 St. Dympnas Road, Dromore, Tyrone, BT78 3JG

Proposed Extension to Existing Dwelling

Full Fermanagh And Omagh 18 Aug 2026
LA01/2026/0864/F 18 Aug 2026 Valid

21a Ballyveely Road, Armoy, Ballymoney

Change of use from garage to child care facility for a maximum of 20 kids, proposed new storage shed and extension of curtilage

Full Causeway And Glens 18 Aug 2026
LA09/2026/0861/LDP 18 Aug 2026 Awaiting decision

14 Hillcrest Park Aughnacloy

Rear extension under Permitted Development Rights for occupant with mobility needs

LD Certificate Proposed Mid Ulster 18 Aug 2026
LA03/2026/0598/F 18 Aug 2026 Valid

77 Ballybentragh Road, Dunadry, Antrim, BT41 2HJ

Alterations and extensions to dwelling

Full Antrim And Newtownabbey 18 Aug 2026
LA10/2026/0800/O 18 Aug 2026 Under Consideration

Immediately NW of 5 Donegall Road, Springfield, Donegall, Enniskillen, Fermanagh, BT74 8DT

Dwelling and detached garage

Outline Fermanagh And Omagh 18 Aug 2026
LA02/2026/0603/O 18 Aug 2026 Consultation Open

10 m SW of 125 CROSSKEYS ROAD KILVILLIS ANTRIM BT41 3QA

DWELLING AND GARAGE (INFILL SITE)

Outline Mid East Antrim 18 Aug 2026
LA07/2026/0967/F 17 Aug 2026 Valid

28A Newtown Road, Rostrevor, Newry

Extension to existing dwelling

Full Newry Mourne Down 17 Aug 2026
LA07/2026/0968/F 17 Aug 2026 Valid

26 Seaview Avenue, Kilkeel, BT34 4JG

Single storey extension to rear of dwelling.

Full Newry Mourne Down 17 Aug 2026
LA07/2026/0969/F 17 Aug 2026 Valid

18 Lisoid Road, Downpatrick, BT30 8LP

Proposed demolition of existing sun-lounge and erection of single storey extension to rear of dwelling and detached double garage

Full Newry Mourne Down 17 Aug 2026
LA08/2026/0888/F 17 Aug 2026 Consultation Open

5 Spinners Avenue, Armagh, BT60 2PE

Erection of single storey side and rear extension

Full Armagh Banbridge Craigavon 17 Aug 2026
LA03/2026/0596/F 17 Aug 2026 Valid

Oakfield House,12 Aghnadarragh Road, Glenavy, Crumlin, BT29 4QG

Extensions to existing dwelling including domestic garages and swimming pool for private domestic use, lobby linking dwelling to home gym (converted f...

Full Antrim And Newtownabbey 17 Aug 2026
LA09/2026/0856/F 17 Aug 2026 Awaiting decision

56 Ballynasaggart Road Dungannon BT70 2AZ

Stand alone garage

Full Mid Ulster 17 Aug 2026
LA07/2026/0963/F 17 Aug 2026 Valid

Lands 50M NE of 90 Strangford Road , Sheepland More , Ardglass, Downpatrick. BT30 7SS

Paired vehicular access to approved dwelling & garage under construction at 92 Strangford Road

Full Newry Mourne Down 17 Aug 2026
LA07/2026/0964/RM 17 Aug 2026 Valid

Lands 110m W of 44 Rostrevor Road Warrenpoint BT34 3RU

Dwelling & detached garage

Reserved Matters Newry Mourne Down 17 Aug 2026
LA03/2026/0591/F 17 Aug 2026 Valid

Holywell Hospital, 60 Steeple Road, Antrim, BT41 2RJ

Removal and alterations of existing roof lanterns

Full Antrim And Newtownabbey 17 Aug 2026
LA03/2026/0592/LBC 17 Aug 2026 Valid

Holywell Hospital, 60 Steeple Road, Antrim, BT41 2RJ

Removal and alterations of existing roof lanterns

Listed Building Consent Antrim And Newtownabbey 17 Aug 2026
LA04/2026/1440/F 17 Aug 2026 Site Inspection Complete

79 Locksley Park, Ballyfinaghy, Belfast, BT10 0AS

Demolition of existing rear conservatory. Addition of single storey flat roof extension to the rear with fenstration changes and new door north facing...

Full Belfast 17 Aug 2026
LA03/2026/0590/O 17 Aug 2026 Consultation Open

70m SE of 183 Portglenone Road, Randalstown, accessed from Mucklerammer Road

Dwelling and garage on a farm

Outline Antrim And Newtownabbey 17 Aug 2026
LA10/2026/0798/RM 17 Aug 2026 Under Consideration

Approx 246m south east of 27 Connaghty Road, Mountjoy Forest West Division, Omagh, Tyrone, BT78 5NH

Proposed dwelling and garage (Outline ref: LA10/2022/0803/O)

Reserved Matters Fermanagh And Omagh 17 Aug 2026
LA10/2026/0799/F 17 Aug 2026 Consultation Open

Site immediately adjacent to 93 Blackhill Road, Aghadreenan, Fintona, Tyrone, BT78 2LN

Proposed dwelling and detached garage

Full Fermanagh And Omagh 17 Aug 2026
LA06/2026/0755/F 17 Aug 2026 Valid

49 Ardmillan Road, Killinchy, BT23 6QW

Single-storey detached garage to rear

Full Ards And North Down 17 Aug 2026
LA10/2026/0794/F 17 Aug 2026 Under Consideration

45m North East of 41 Corrameen Road, Corrameen, Kinawley, Fermanagh, BT92 4BU

Dwelling and domestic garage

Full Fermanagh And Omagh 17 Aug 2026
LA05/2026/0656/F 16 Aug 2026 Valid

3 Rural Cottages, Lisburn, BT27 5TW

Proposed single storey rear extensions

Full Lisburn And Castlereagh 16 Aug 2026
LA09/2026/0849/LBC 14 Aug 2026 Awaiting decision

20A High Street Draperstown BT45 7AA

Roof mounted PV panel installation and internal alterations to include installation of secondary glazing to existing windows.

Listed Building Consent Mid Ulster 14 Aug 2026
LA09/2026/0853/F 14 Aug 2026 Awaiting decision

96 Killycolpy Road, Stewartstown

Domestic Store

Full Mid Ulster 14 Aug 2026
LA07/2026/0958/F 14 Aug 2026 Valid

4 Cullyhanna Road, Newry, BT35 0JB

Proposed granny flat extension and porch extension to existing dwelling.

Full Newry Mourne Down 14 Aug 2026
LA03/2026/0589/F 14 Aug 2026 Valid

27 Hartley Hall Crescent, Greenisland, Carrickfergus, BT38 8ZZ

Roofspace conversion with rear dormer

Full Antrim And Newtownabbey 14 Aug 2026
LA06/2026/0753/LBC 14 Aug 2026 Valid

4 Tudor Park Holywood BT18 0NX

Demolition and replacement of first floor internal solid wall with a timber and plaster-boarded stud wall. Levelling of existing floor on both sides o...

Listed Building Consent Ards And North Down 14 Aug 2026
LA09/2026/0847/O 14 Aug 2026 Awaiting decision

Adjacent and West of 29 Keenaghan Road Cookstown

Dwelling and domestic garage

Outline Mid Ulster 14 Aug 2026
LA07/2026/0957/F 14 Aug 2026 Valid

16 Freeduff Road, Cullyhanna, BT35 0JJ

Extension to dwelling

Full Newry Mourne Down 14 Aug 2026
LA08/2026/0890/F 14 Aug 2026 Valid

36 Church Road, Portadown,, BT63 5HT

Erection of single storey rear extension.

Full Armagh Banbridge Craigavon 14 Aug 2026
LA08/2026/0889/F 14 Aug 2026 Valid

20 Cloncarrish Road, Portadown, Craigavon, BT62 1RN

Side and rear single storey extension and internal alterations.

Full Armagh Banbridge Craigavon 14 Aug 2026
LA11/2026/0605/F 14 Aug 2026 Valid

3 Darleen Park Londonderry BT48 8DT

Proposed Alterations, First-Floor Terrace Balcony, Window Adjustments, and Exterior Rendering to Existing Dwelling

Full Derry And Strabane 14 Aug 2026
LA05/2026/0662/F 14 Aug 2026 Valid

15 Ballyregan Avenue, Dundonald, Belfast, BT16 1JW

1st floor Bedrooms extension on top of existing integrated garage and blocking up existing Bathroom window at first floor level to rear of existing dw...

Full Lisburn And Castlereagh 14 Aug 2026
LA11/2026/0600/F 14 Aug 2026 Consultation Open

52 Dellwood, Eglinton, Londonderry, BT47 3XF

Proposed single storey rear extension to dwelling

Full Derry And Strabane 14 Aug 2026
LA01/2026/0852/F 14 Aug 2026 Valid

Castleroe Primary School, 120 Castleroe Road, Coleraine

Proposed single storey extension to existing school with associated site works.

Full Causeway And Glens 14 Aug 2026
LA01/2026/0854/F 14 Aug 2026 Valid

308 Finvoy Road, Rasharkin

Demolition of Sun Room and replace with ground floor bedroom & Shower Room, Rear Level Access Ramp

Full Causeway And Glens 14 Aug 2026
LA06/2026/0750/F 14 Aug 2026 Consultation Open

16 Ballymacormick Road, Bangor, BT19 6AA

Single storey extension to rear; new cladding to front and side.

Full Ards And North Down 14 Aug 2026
LA11/2026/0599/F 14 Aug 2026 Consultation Open

115 Brookdale Park, Londonderry, BT48 8HH

Proposed two-storey rear extension, internal alterations, formation of a new opening in front elevation to facilitate wheelchair access, including pro...

Full Derry And Strabane 14 Aug 2026
Recency
Last 2 weeks
2-4 weeks
1-2 months
Older

Get free email alerts for new extensions applications in Northern Ireland

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 Northern Ireland?
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 Northern Ireland. 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 Northern Ireland's active councils.