House extensions in Eastbourne

Eastbourne received 205 householder applications in the last 12 months - about 4 a week. Rear extensions and side extensions are the most common. Of the 168 decided so far, 160 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 44 of 44 applications
21 Oct 2026 Pending 260535

230 Willingdon Road Eastbourne East Sussex BN21 1XS

Removal of existing garage, erection of home office and alterations toexisting rear boundary fence

Householder Eastbourne
20 Oct 2026 Pending 260489

10 Elmwood Gardens Eastbourne East Sussex BN23 8JH

Conversion of the existing integral garage and utility room to form self contained annex ancillary to the existing dwelling

Householder Eastbourne
20 Oct 2026 Pending 260534

21 Constable Road Eastbourne East Sussex BN23 7NN

Erection of single storey rear extension

Householder Eastbourne
19 Oct 2026 Pending 260533

Flat 4 20 Denton Road Eastbourne East Sussex BN20 7ST

Replace 3no. timber windows with UPVC double glazing to rear elevation

Planning Permission Eastbourne
16 Oct 2026 Pending 260498

7 Chatfield Crescent Eastbourne East Sussex BN22 0EZ

Erection of single storey front extension, canopy to side elevation, installation of 1no. rooflight to front roof slope and alterations to existing fe...

Householder Eastbourne
15 Oct 2026 Pending 260496

Flat 1 15 Old Orchard Road Eastbourne East Sussex BN21 1DD

Remove section of existing front boundary wall, installation of driveway with new vehicular crossover and drop kerb

Planning Permission Eastbourne
7 Oct 2026 Pending 260511

32 Harding Avenue Eastbourne East Sussex BN22 8PJ

Erection of single storey rear extension

Householder Eastbourne
6 Oct 2026 Pending 260486

33 Langney Green Eastbourne East Sussex BN23 6HY

Erection of single storey rear extension and roof extension, single storey side extension, front dormer and replacement roof tiles

Householder Eastbourne
30 Sept 2026 Pending 260456

The Ranch 12 Mill Gap Road Eastbourne East Sussex BN21 2JE

Change of use from 4 bedroom dwellinghouse (Use Class C3) to 5 bedroomHMO (Use Class C4) with garage conversion

Planning Permission Eastbourne
30 Sept 2026 Pending 260502

43 Reynolds Road Eastbourne East Sussex BN23 7NQ

Conversion of two existing garages into a single garage, including replacement of 2no. garage doors with 1no. sectional garage door and installation o...

Householder Eastbourne
28 Sept 2026 Pending 260482

77 Selmeston Road Eastbourne East Sussex BN21 2TF

Erection of single story front extension, detached garage and enlargement of existing driveway

Householder Eastbourne
28 Sept 2026 Pending 260490

10 Ascot Close Eastbourne East Sussex BN20 7HL

Erection of single storey side extension, canopy to side elevation, front entrance porch, replace existing garage roof, enlargement of rear raised ter...

Householder Eastbourne
26 Sept 2026 Pending 260499

12 St Pauls Close Eastbourne East Sussex BN22 0LP

Lawful Development Certificate for proposed single storey rear infillextension

LD Certificate (proposed) Eastbourne
23 Sept 2026 Pending 260494

18 Ruskin Road Eastbourne East Sussex BN20 9AY

Erection of single storey rear extension

Householder Eastbourne
21 Sept 2026 Pending 260408

2 Edmund Close Eastbourne East Sussex BN23 6TX

Erection of garden building

Householder Eastbourne
18 Sept 2026 Pending 260469

Flat 1 24 Denton Road Eastbourne East Sussex BN20 7ST

Erection of rear conservatory with access steps

Planning Permission Eastbourne
15 Sept 2026 Approved 30 Sep 260443

26 Drake Avenue Eastbourne East Sussex BN23 6BW

Lawful Development Certificate for proposed single storey side extension

LD Certificate (proposed) Eastbourne
14 Sept 2026 Pending 260473

6 Linnet Close Eastbourne East Sussex BN23 7RY

Erection of single storey rear extension and front porch

Householder Eastbourne
14 Sept 2026 Approved 20 Oct 260454

38 Arlington Road Eastbourne East Sussex BN21 1DL

Replace existing timber sliding sash, timber casement windows and 1no.rear door with upvc at ground and first floor level

Planning Permission Eastbourne
14 Sept 2026 Pending 260477

10 Ratton Drive Eastbourne East Sussex BN20 9BJ

Demolition of the existing side extension and the erection of single-storey side and rear extensions; formation of a rear terrace with ancillary accom...

Householder Eastbourne
9 Sept 2026 Pending 260411

Centenary House, Avenue House 1a The Avenue Eastbourne East Sussex

Lawful development Certificate (proposed) for the replacement of uPVCdouble glazed casement windows and doors to all elevations

LD Certificate (proposed) Eastbourne
9 Sept 2026 Approved 14 Oct 260460

11 Rowsley Road Eastbourne East Sussex BN20 7XS

Erection of single storey extension

Householder Eastbourne
2 Sept 2026 Approved 14 Oct 260457

13 Peppercombe Road Eastbourne East Sussex BN20 8JH

Erection of rear/side conservatory

Householder Eastbourne
1 Sept 2026 Withdrawn 1 Sep 260322

Flat 3, Sarnia House 17 Darley Road Eastbourne East Sussex BN20 7PE

Replacement of 6 no. timber framed single glazed windows with white uPVC double-glazed windows to front and side of property

Planning Permission Eastbourne
28 Aug 2026 Approved 20 Oct 260445

Ashurst 30 Ashburnham Road Eastbourne East Sussex BN21 2HX

Erection of front dormer, installation of 2no. rooflights to rear roofslope, 1no. rooflight to front roofslope and replacement window toexisting side ...

Householder Eastbourne
20 Aug 2026 Approved 7 Oct 260438

Flat 3, Stafford House Southfields Road Eastbourne East Sussex BN21 1BN

Replace existing single glazed timber sliding sash windows with doubleglazed timber sliding sash windows front elevation

Planning Permission Eastbourne
18 Aug 2026 Approved 6 Oct 260432

71 Lindfield Road Eastbourne East Sussex BN22 0AJ

Lawful development certificate for proposed loft conversion and installation of 1no.rooflight to front elevation and 3no. rooflights to rear elevation

LD Certificate (proposed) Eastbourne
18 Aug 2026 Approved 5 Oct 260433

6 Sturdee Close Eastbourne East Sussex BN23 6AZ

Erection of single storey front extension, two storey side extension and single storey rear extension

Householder Eastbourne
17 Aug 2026 Pending 260366

1 Jellicoe Close Eastbourne East Sussex BN23 6DD

Lawful Development Certificate for proposed garage conversion

LD Certificate (proposed) Eastbourne
14 Aug 2026 Approved 6 Oct 260403

Flat 1 5 Old Orchard Road Eastbourne East Sussex BN21 1DB

Erection of single storey rear/side extension

Planning Permission Eastbourne
13 Aug 2026 Pending 260429

Town Hall Grove Road Eastbourne East Sussex BN21 4UG

Installation of cabin platform lift within ground floor stairwell, servicing first and second floors

Listed Building Consent Eastbourne
11 Aug 2026 Approved 15 Sep 260400

8 Lapwing Close Eastbourne East Sussex BN23 7RX

Lawful development for proposed installation of 1no. window to side elevation and alterations to 1no. window to front elevation, 1no. window to side e...

LD Certificate (proposed) Eastbourne
10 Aug 2026 Approved 2 Oct 260414

42 All Saints 40 King Edwards Parade Eastbourne East Sussex BN20 7FE

Internal alterations and relocation of kitchen

Listed Building Consent Eastbourne
9 Aug 2026 Approved 23 Sep 260420

47 Manvers Road Eastbourne East Sussex BN20 8HH

Erection of hip to gable roof extension, rear dormer and installation of 2no. rooflights to front elevation

Householder Eastbourne
7 Aug 2026 Approved 2 Oct 260418

Sunrays 16 Ruskin Road Eastbourne East Sussex BN20 9AY

Erection of a single storey front extension, new pitched roof at ground floor level to front and side elevation, enlargement of existing driveway, veh...

Householder Eastbourne
6 Aug 2026 Approved 23 Sep 260367

11 Burrow Down Eastbourne East Sussex BN20 8ST

Erection of first floor front extension, single storey rear extension with access steps, and single storey side extension

Householder Eastbourne
6 Aug 2026 Approved 1 Oct 260415

Flat 2, Bolsover Court 19 Bolsover Road Eastbourne East Sussex BN20 7JG

Conversion of external rear storage area to enlarge existing bedroom and replace single-glazed timber sash windows with uPVC sliding sash windows

Planning Permission Eastbourne
5 Aug 2026 Approved 14 Oct 260404

7 Lincoln Close Eastbourne East Sussex BN20 7TZ

Erection of single storey rear and front extension, enlargement of rear dormer, installation of new front dormer and alterations to existing front dor...

Householder Eastbourne
3 Aug 2026 Approved 19 Oct 260398

Wishes End 66 Wish Hill Eastbourne East Sussex BN20 9HA

Erection of single storey ground floor rear and side extension, hip togable roof extension, rear dormer an loft conversion

Householder Eastbourne
31 Jul 2026 Approved 15 Sep 260368

29 Parkway Eastbourne East Sussex BN20 9DX

Application to determine if prior approval is required for a proposed:Larger Home Extension for erection of rear conservatory. The Town and Country Pl...

Prior Approval Eastbourne
31 Jul 2026 Approved 24 Sep 260397

66 Parkway Eastbourne East Sussex BN20 9DZ

Erection of single storey side extension

Householder Eastbourne
30 Jul 2026 Approved 23 Sep 260399

173 Ringwood Road Eastbourne East Sussex BN22 8UW

Erection of two storey side extension

Householder Eastbourne
29 Jul 2026 Approved 15 Sep 260406

8 Magnolia Drive Eastbourne East Sussex BN22 0SU

Erection of single story rear extension

Householder Eastbourne
29 Jul 2026 Approved 23 Sep 260384

Linosa Court 79-81 Pevensey Road Eastbourne East Sussex BN22 8AD

Removal of 2no. external staircases, alterations to fenestrations at first and second floor level

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

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