House extensions in Canterbury

Canterbury received 454 householder applications in the last 12 months - about 9 a week. Rear extensions and garage works are the most common. Of the 313 decided so far, 309 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 145 applications
8 Sept 2026 Awaiting decision CA/26/01425

9 Maple Court Hersden Kent CT3 4JF

Application for lawful development certificate for proposed outbuilding

Cert of proposed lawful use or devt Canterbury
7 Sept 2026 Awaiting decision CA/26/01308

29 Ridgeway Road Herne Kent CT6 7LL

Porch to front elevation.

Full Application Canterbury
7 Sept 2026 Awaiting decision CA/26/01426

21 Columbia Avenue Whitstable Kent CT5 4EH

Single-storey side extension together with single-storey outbuilding for use as ancillary accommodation.

Full Application Canterbury
7 Sept 2026 Awaiting decision CA/26/01476

Sadlers 6 Genesta Avenue Whitstable Kent CT5 4DQ

Erection of front porch, increase to the garage roof height, replacement of all fenestration from upvc to aluminium, replacement of existing clay roof...

Full Application Canterbury
7 Sept 2026 Awaiting decision CA/26/01442

Petham House Broadway Petham Kent CT4 5RX

Single-storey rear extension, first floor extension, erection of an attached carport to front elevation together with installation of swimming pool fo...

Canterbury
7 Sept 2026 Awaiting decision CA/26/01474

23 Ashenden Close Thanington Without Kent CT1 3XL

Single-story rear and side extension.

Canterbury
7 Sept 2026 Awaiting decision CA/26/01469

36A Graystone Road Whitstable Kent CT5 2JX

Single Storey Rear Extension together with 3 No. Rooflights and change of cladding material to elevations.

Canterbury
7 Sept 2026 Awaiting decision CA/26/01471

1 The Grove Herne Bay Kent CT6 7QD

Single-storey rear extension and erection of porch following the demolition of existing porch and conservatory.

Canterbury
4 Sept 2026 Awaiting decision CA/26/01473

10 Wye Green Herne Bay Kent CT6 5UF

Installation of cladding to first floor on all elevations together with Porch to front elevation.

Canterbury
4 Sept 2026 Awaiting decision CA/26/01400

58 - 60 Wincheap Canterbury Kent CT1 3RS

Installation of external staircase to the first floor at the rear elevation following the removal of external window.

Full Application Canterbury
2 Sept 2026 Awaiting decision CA/26/01451

Speedy Hire Centre 21 Maynard Road Wincheap Industrial Estate Canterbury Kent CT1 3RH

Retrospective replacement of door and window openings to front elevation together with steel roller shutter.

Full Application Canterbury
2 Sept 2026 Awaiting decision CA/26/01449

23 St Peter's Lane Canterbury Kent CT1 2BP

Dormer to rear elevation together with replacement of rear fence from timber to brick.

Full Application Canterbury
1 Sept 2026 Awaiting decision CA/26/01287

200 Sea Street Herne Bay Kent CT6 8LF

Extension of existing vehicular access.

Full Application Canterbury
1 Sept 2026 Awaiting decision CA/26/01437

7 Hawks Road Herne Bay Kent CT6 7ST

Single-storey rear extension.

Full Application Canterbury
1 Sept 2026 Awaiting decision CA/26/01440

20 The Paddock Canterbury Kent CT1 1SX

Installation of 1 rooflight to front and rear elevation.

Full Application Canterbury
1 Sept 2026 Awaiting decision CA/26/01445

5 Stanley Road Whitstable Kent CT5 4NJ

Single-storey rear extension and a two-storey side extension.

Full Application Canterbury
1 Sept 2026 Awaiting decision CA/26/01447

5 Kimberley Grove Seasalter Kent CT5 4AY

Single storey rear extension.

Full Application Canterbury
1 Sept 2026 Awaiting decision CA/26/01446

12 Fordwich Road Sturry Kent CT2 0BN

Single-storey carport.

Full Application Canterbury
28 Aug 2026 Awaiting decision CA/26/01431

South Barn Moat Lane Fordwich Kent CT2 0DP

Erection of a 1.5-storey side extension to the existing garage together with a single-storey outbuilding, installation of a 1.8m-high boundary fence a...

Full Application Canterbury
28 Aug 2026 Awaiting decision CA/26/01434

5 Northwood Road Whitstable Kent CT5 2ET

Single-storey rear extension together with second floor infill extension, external cladding and associated external alterations.

Full Application Canterbury
28 Aug 2026 Awaiting decision CA/26/01430

19 Little Copse Close Chartham Kent CT4 7TE

Application for lawful development certificate for proposed single-storey rear extension.

Cert of proposed lawful use or devt Canterbury
27 Aug 2026 Awaiting decision CA/26/01414

5A St Peters Street Canterbury Kent CT1 2AT

Change of use of first floor store to residential together with roof light to side elevation.

Full Application Canterbury
25 Aug 2026 Awaiting decision CA/26/01391

Abbots Barton Hotel 36 New Dover Road Canterbury Kent CT1 3DU

Single-storey orangery extension together with patio, wheelchair accessible ramp, external lighting and air-conditioning units.

Full Application Canterbury
21 Aug 2026 Awaiting decision CA/26/01398

100 The Broadway Herne Bay Kent CT6 8EY

Application for lawful development certificate for installation of a Dormer window frame onto the rear roof slope.

Cert of proposed lawful use or devt Canterbury
20 Aug 2026 Awaiting decision CA/26/01390

Railway Cottage 1 Station Approach Bekesbourne Kent CT4 5DT

Proposed two-storey and single-storey rear extension following demolition of existing conservatory.

Full Application Canterbury
20 Aug 2026 Awaiting decision CA/26/01387

2 Muscovy Way Herne Bay Kent CT6 5RR

Single-storey rear extension.

Full Application Canterbury
19 Aug 2026 Awaiting decision CA/26/01380

25A Cavendish Road Herne Bay Kent CT6 5BE

Proposed single-storey rear extension.

Full Application Canterbury
18 Aug 2026 Awaiting decision CA/26/01378

9 St Augustines Road Canterbury Kent CT1 1XP

Proposed replacement porch.

Full Application Canterbury
17 Aug 2026 Awaiting decision CA/26/01348

Tinkers Thatch Thornden Wood Road Herne Bay Kent CT6 7NX

Single-storey detached annex in rear garden following demolition of existing outbuilding.

Full Application Canterbury
14 Aug 2026 Awaiting decision CA/26/01363

Flat 4 The Hoystings 56 Old Dover Road Canterbury Kent CT1 3DF

Formation of a parking area for 5 cars together with a new vehicular access.

Full Application Canterbury
13 Aug 2026 Awaiting decision CA/26/01303

123 Island Wall Whitstable Kent CT5 1DY

Replacement windows from timber to replica timber upvc to ground floor and first floor front, side and rear elevations.

Full Application Canterbury
13 Aug 2026 Awaiting decision CA/26/01356

55 Borstal Hill Whitstable Kent CT5 4NU

Proposed installation of solar panels to side (south facing) roofslope together with raised decking area to rear.

Full Application Canterbury
13 Aug 2026 Awaiting decision CA/26/01349

St Johns Hospital Northgate Canterbury Kent

Relocation of existing automated entrance gate.

Full Application Canterbury
13 Aug 2026 Awaiting decision CA/26/01345

57 Seymour Avenue Whitstable Kent CT5 1SE

Installation of Porch to front elevation.

Full Application Canterbury
12 Aug 2026 Awaiting decision CA/26/01347

13 Pier Avenue Whitstable Kent CT5 2HQ

Single-storey rear extension, roof extension and dormers to side elevations together with balcony to rear elevation.

Full Application Canterbury
12 Aug 2026 Awaiting decision CA/26/01344

26 The Broadway Herne Bay Kent CT6 8SR

Application for lawful development certificate for proposed loft conversion with side and rear dormers and velux windows to front elevation.

Cert of proposed lawful use or devt Canterbury
12 Aug 2026 Awaiting decision CA/26/01327

47A Shalloak Road Broad Oak Kent CT2 0QH

Application for lawful development certificate for proposed use of garage a living accommodation.

Cert of proposed lawful use or devt Canterbury
11 Aug 2026 Awaiting decision CA/26/01302

47 - 49 Downs Park Herne Bay Kent CT6 6BZ

Replacement roof tiles from concrete to slate, weatherboard cladding to front elevation together with 1 attached garage and 1 detached garage followin...

Full Application Canterbury
11 Aug 2026 Awaiting decision CA/26/01340

89 St Peter's Grove Canterbury Kent CT1 2DH

Dormer to rear, together with two rooflights to front elevation.

Full Application Canterbury
10 Aug 2026 Awaiting decision CA/26/01281

11 Bishopstone Drive Herne Bay Kent CT6 6RE

Single storey rear extension and erection of front and rear dormer window extensions to existing dwelling, side extension to create a one and a half s...

Full Application Canterbury
10 Aug 2026 Awaiting decision CA/26/01336

161 Island Wall Whitstable Kent CT5 1EE

Single storey rear extension, front dormer, following demolition of part of the existing single storey rear extension.

Full Application Canterbury
10 Aug 2026 Awaiting decision CA/26/01300

Linksfield Invicta Road Whitstable Kent CT5 1PN

Porch to South West elevation.

Full Application Canterbury
10 Aug 2026 Awaiting decision CA/26/01321

51 Stanley Road Whitstable Kent CT5 4NQ

Single storey rear extension, veranda and balcony to front elevation, changes to fenestration together with use of garage space as habitable accommoda...

Full Application Canterbury
6 Aug 2026 Awaiting decision CA/26/01313

8 Lancaster Gardens Herne Bay Kent CT6 6PU

Single-storey rear infill extension together with insertion of window to first floor front elevation following demolition of existing conservatory.

Full Application Canterbury
4 Aug 2026 Awaiting decision CA/26/01129

12 Cross Street Canterbury Kent CT2 8AT

Replacement of brick wall with timber fence, replacement of gate together with repaving patio area.

Full Application Canterbury
3 Aug 2026 Awaiting decision CA/26/01269

Karima Sunray Avenue Whitstable Kent CT5 4EQ

Two-storey side extension, single-storey rear extension and roof extension with front dormer and rear roof terrace.

Full Application Canterbury
3 Aug 2026 Awaiting decision CA/26/01298

61 Goodwin Avenue Whitstable Kent CT5 2RA

Application for a Lawful Development Certificate for proposed outbuilding to be used as a gym & music room.

Cert of proposed lawful use or devt Canterbury
3 Aug 2026 Awaiting decision CA/26/01299

61 Goodwin Avenue Whitstable Kent CT5 2RA

Single-storey rear extension, following demolition of conservatory and render to all elevations.

Full Application Canterbury
3 Aug 2026 Awaiting decision CA/26/01294

1 Citroen Close Herne Bay Kent CT6 8AB

Single storey front extension.

Full Application Canterbury
3 Aug 2026 Awaiting decision CA/26/01297

61 Goodwin Avenue Whitstable Kent CT5 2RA

Application for a Lawful Development Certificate for proposed dormer window in rear elevation and roof lights in front elevation.

Cert of proposed lawful use or devt Canterbury
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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 Canterbury?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Canterbury. You can also narrow the alert to a postcode, street, or drawn area.

We check Canterbury's planning portal daily. New extensions applications appear here within a day of being published.