House extensions in Northumberland (County)

Northumberland (County) received 933 householder applications in the last 12 months - about 18 a week. Garage works and rear extensions are the most common. Of the 679 decided so far, 609 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

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Showing 50 of 240 applications
Yesterday Registered 26/03744/CLPROP

21 Newby Close Heritage Gardens Bedlington Northumberland NE22 5YT

Certificate of Lawful Development for a proposed single storey rear extension, partial conversion of garage.

Certificate of Lawful Proposed Devel Northumberland County
Yesterday Registered 26/03738/FUL

16 Blakewell Road Tweedmouth Northumberland TD15 2HG

Proposed demolition of existing outbuilding and erection of a 1 3/4 storey annexe to provide additional accommodation to dwelling house and associated...

Full Application Northumberland County
Yesterday Registered 26/03739/FUL

Keepers Cottage Milfield Wooler Northumberland NE71 6TH

Proposed erection of a single storey extension to dwelling house and conversion of existing outbuilding in garden (currently home gym) to form annexe ...

Full Application Northumberland County
Yesterday Registered 26/03740/FUL

Wellside Barn Welton Northumberland NE18 0LJ

Single storey extension

Full Application Northumberland County
Yesterday Registered 26/03705/FUL

36 Beechwood Avenue Stakeford Choppington Northumberland NE62 5AP

Single storey rear kitchen extension and single storey front porch with pitched roof

Full Application Northumberland County
23 Oct 2026 Registered 26/03751/FUL

Gate House Station Road Seaton Delaval Whitley Bay Northumberland NE25 0PT

Proposed changes to boundary treatment.

Full Application Northumberland County
22 Oct 2026 Registered 26/03726/CLPROP

Clifton Ridge 17 Great North Road Clifton Northumberland NE61 6DQ

Certificate of Lawful Development for the demolition of the existing single storey rear extension and the construction of a two storey rear extension.

Certificate of Lawful Proposed Devel Northumberland County
22 Oct 2026 Registered 26/03710/FUL

Fallowfield Kennel Wood Eshott Northumberland NE65 9FE

Single storey lounge extension to the West elevation of existing property

Full Application Northumberland County
22 Oct 2026 Registered 26/03661/FUL

17 Northumberland Court Castlefields Prudhoe Northumberland NE42 5FN

Erection of a single storey rear extension with a pitched tiled roof and two rooflights, including a new full-height window to the side and glazed doo...

Full Application Northumberland County
22 Oct 2026 Registered 26/03020/FUL

Central Park Norwich Way Parkside Chase Cramlington Northumberland

Retrospective - Alteration of the elevations for the storage container on the site to be used as storage and as a 'pop up shop' serving drinks and sna...

Full Application Northumberland County
22 Oct 2026 Registered 26/02446/FUL

West Wylam Inn Front Street Prudhoe Northumberland NE42 5DQ

Change of use of public house (Sui Generis) to a Class E(a) convenience store, including a single-storey rear extension, internal alterations, infill ...

Northumberland County
21 Oct 2026 Registered 26/03485/FUL

11 Belsay Grove Heritage Gardens Bedlington Northumberland NE22 5YU

Detached double garage, single storey rear and side extension, front porch extension and conversion of garage into additional living space to create a...

Full Application Northumberland County
21 Oct 2026 Registered 26/03712/FUL

Causey Lodge Causey Way Hexham Northumberland NE46 2JQ

Replace garage with a single-storey detached garden room to rear.

Full Application Northumberland County
21 Oct 2026 Registered 26/03700/FUL

17 The Village Low Hauxley Morpeth Northumberland NE65 0JR

Construction of dormer to west elevation

Full Application Northumberland County
21 Oct 2026 Registered 26/03677/FUL

Langley Village Hall Langley-on-tyne Hexham Northumberland NE47 5LA

Side extension to existing hall to provide new toilet facilities and store room

Full Application Northumberland County
21 Oct 2026 Registered 26/03673/FUL

15 Millersfield Acomb Northumberland NE46 4RG

Extension of existing driveway in front of house

Full Application Northumberland County
21 Oct 2026 Registered 26/03475/FUL

33 Linden Way Darras Hall Ponteland Northumberland NE20 9DP

Proposed single storey rear extension, extension above existing garage, window replacement throughout, render and brick finishes to existing house, fr...

Full Application Northumberland County
20 Oct 2026 Registered 26/03557/FUL

29 Alston Avenue Cramlington Northumberland NE23 6RP

Erection of a single storey extension to the rear elevation and a single storey extension to the gable elevation of the property

Full Application Northumberland County
20 Oct 2026 Registered 26/03678/FUL

43 Castle Meadows Highchurch Morpeth Northumberland NE61 2JY

Addition of new front enclosed porch and new extension to rear along with conversion of existing attached garage to form new kitchen and dining area t...

Full Application Northumberland County
20 Oct 2026 Registered 26/03681/FUL

Marshall Meadows Farm Berwick-Upon-Tweed Northumberland TD15 1UT

Proposed extension to house home office; small sunroom extension to replace area taken within the existing floor plan for accessibility needs.

Full Application Northumberland County
20 Oct 2026 Registered 26/03683/FUL

The Old Manse Front Street Embleton Northumberland NE66 3UL

Proposed installation of an air source heat pump, external wall hung battery stack, solar PV panels to the roof, new timber garden shed and replacemen...

Full Application Northumberland County
19 Oct 2026 Registered 26/03669/FUL

51 Dunkeld Close South Beach Blyth Northumberland NE24 3SP

Retrospective - Proposed railings to front of property

Full Application Northumberland County
19 Oct 2026 Registered 26/03659/FUL

Hillside Main Road Stocksfield Northumberland NE43 7JR

Introduction of an additional external door to provide independent access to the flat, replacement of the existing windows with uPVC windows within th...

Full Application Northumberland County
19 Oct 2026 Registered 26/03298/FUL

Drystones Dunces Houses Hepscott Northumberland NE61 6NU

Retrospective: Demolish existing wooden garage and replace with a steel frame garage with metal and wooden panels

Full Application Northumberland County
16 Oct 2026 Registered 26/03577/FUL

28 Hallgate Hexham Northumberland NE46 1XD

First floor bathroom refurbishment

Full Application Northumberland County
16 Oct 2026 Registered 26/03658/CLPROP

14 St Georges Crescent Alnwick Northumberland NE66 1AY

Certificate of Lawful Development - Proposed demolition of existing single storey rear extension and replace with new single storey rear extension

Certificate of Lawful Proposed Devel Northumberland County
16 Oct 2026 Registered 26/03657/CLPROP

81 Hareside Whitelea Glade Cramlington Northumberland NE23 6BJ

Certificate of Lawful Development- Proposed conversion of existing garage into habitable accommodation, replacing existing flat roof with pitched roof

Certificate of Lawful Proposed Devel Northumberland County
16 Oct 2026 Registered 26/03652/FUL

Humshaugh Village Hall Humshaugh Northumberland NE46 4AA

Demolition of existing rear extensions and erection of new single-storey rear extension with associated internal and external alterations

Full Application Northumberland County
16 Oct 2026 Registered 26/03643/FUL

Public Convenience Rear Of Ship Inn Newton-by-the-sea Northumberland NE66 3HJ

Adding an external double door to the store South West Elevation with a 1200mm ramp for scooters to be stored. Adjusting the existing entrance gate an...

Full Application Northumberland County
15 Oct 2026 Registered 26/03642/FUL

82 Inglewood Close Blyth Northumberland NE24 4LT

Proposed two-storey side extension

Full Application Northumberland County
15 Oct 2026 Registered 26/03640/FUL

22 West End Tweedmouth Northumberland TD15 2HE

Alterations to the principal (front) elevation to remove existing cement render wall finish to expose stonework below. Repoint stonework and replace e...

Full Application Northumberland County
15 Oct 2026 Registered 26/03597/FUL

Kitty Brewster Farm Blyth Northumberland NE24 4JU

Demolish existing 2 storey section and provide new 2 storey extension to side of main dwelling

Full Application Northumberland County
15 Oct 2026 Registered 26/03589/FUL

2 Bridge Street 15- 17 Market Place Morpeth Northumberland NE61 1NB

Amendments to allow improved internal apartment layouts, external facade changes including installation solar panels, private residential balconies an...

Full Application Northumberland County
15 Oct 2026 Registered 26/01742/FUL

Well House Hawkwell Northumberland NE18 0QT

Extension of existing garage to create gym and associated facilities and change of use of adjacent land to residential curtilage (as amended: 18.09.20...

Full Application Northumberland County
14 Oct 2026 Registered 26/03627/FUL

94 Rothesay Terrace Bedlington Northumberland NE22 5PX

Single Storey Rear Extension

Full Application Northumberland County
14 Oct 2026 Registered 26/03625/FUL

126 Darras Road Darras Hall Ponteland Northumberland NE20 9PG

Proposed family room extension, front canopy and new roof to form first floor bedrooms. Also extended driveway to allow onsite turning and new automat...

Full Application Northumberland County
14 Oct 2026 Registered 26/03623/FUL

10 Axbridge Close Sherbourne Park Stakeford Northumberland NE62 5HB

Single storey front extension

Full Application Northumberland County
14 Oct 2026 Registered 26/03620/FUL

34 Antonine Walk Heddon-On-The-Wall Northumberland NE15 0EE

Retrospective application for the retention of a replacement 1.83-metre high timber panel boundary fence along the rear/side garden boundary

Full Application Northumberland County
14 Oct 2026 Registered 26/03612/FUL

16 Hood Street Morpeth Northumberland NE61 1JF

Single storey rear extension

Full Application Northumberland County
14 Oct 2026 Registered 26/03543/FUL

7 The Music Shop Bridge Street Berwick-Upon-Tweed Northumberland TD15 1ES

Rear single storey extension, associated internal alterations to create a cafe bar, bistro, alter access arrangements to first floor flat and internal...

Full Application Northumberland County
13 Oct 2026 Registered 26/03602/LBC

1 Quatre Bras Hexham Northumberland NE46 3JY

Listed Building Consent: Demolition of single-storey conservatory, porch, erection of single storey extensions, replacement windows, internal remodell...

Listed Building Consent Northumberland County
13 Oct 2026 Registered 26/03601/FUL

1 Quatre Bras Hexham Northumberland NE46 3JY

Demolition of single-storey conservatory, porch, erection of single storey extensions, replacement windows, internal remodelling, addition of new roof...

Full Application Northumberland County
13 Oct 2026 Registered 26/03541/FUL

The Joiners Arms Wansbeck Street Morpeth Northumberland NE61 1XZ

External alterations to the garden and yard area comprising the erection of an open sided timber pergola, the formation of an extended external seatin...

Full Application Northumberland County
13 Oct 2026 Registered 26/03345/FUL

11 Pembroke Drive Darras Hall Ponteland Northumberland NE20 9HS

Proposed detached garage. 6.5m x 6.5m. Brick and roof tiles to match existing house

Full Application Northumberland County
12 Oct 2026 Registered 26/03596/HPA

26 Starlight Crescent Seaton Delaval Northumberland NE25 0ED

Notification of Prior Approval: Erection of a single-storey rear extension with a total projection from rear wall of original dwellinghouse of 5.00m w...

Householder Prior Notification Northumberland County
12 Oct 2026 Registered 26/03515/FUL

47 Swansfield Park Road Alnwick Northumberland NE66 1AR

Removal of flat roofed garage, store, rear lean-to porch, stone external store, construction of single storey extension and associated works.

Full Application Northumberland County
12 Oct 2026 Registered 26/03513/FUL

Marden Cottage Watling Street Corbridge Northumberland NE45 5AH

Replace uPVC frames and roof in white finish

Full Application Northumberland County
12 Oct 2026 Registered 26/03569/FUL

Whitslaid 12 Cade Hill Road Stocksfield Northumberland NE43 7PS

Creation of open entrance porch to principle elevation; reconfiguration of modern extension (office) to create downstairs shower room on south elevati...

Full Application Northumberland County
12 Oct 2026 Registered 26/03565/FUL

Stob Green Sinderhope Hexham Northumberland NE47 9SL

Construction of two outbuildings to replace raised beds, static caravan and garden building, and create new hard standing to access garage

Full Application Northumberland County
9 Oct 2026 Registered 26/03570/FUL

1 The Woodlands Shadfen Morpeth Northumberland NE61 6NS

Single storey side extension and internal alterations

Full Application Northumberland County
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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, whether taller, larger or 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 those drawing a lot of comments, can take longer.
Can I get email alerts for new extensions applications in Northumberland (County)?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Northumberland (County). You can also narrow the alert to a postcode, street, or drawn area.

We check Northumberland (County)'s planning portal daily. New extensions applications appear here within a day of being published.