House extensions in Brighton and Hove

Brighton and Hove received 255 householder applications in the last 12 months - about 5 a week. Rear extensions and dormers are the most common. All 32 decided so far were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

136 last 90 days
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68 last 30 days
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24 last 14 days

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Showing 50 of 136 applications
BH2026/01601 6 Jul 2026 Registered

18 Montgomery Street Hove BN3 5BF

Prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 3.40m, for which t...

Brighton And Hove 6 Jul 2026
BH2026/01607 6 Jul 2026 Registered

190 Surrenden Road Brighton BN1 6NN

Certificate of lawfulness for proposed erection of flat roof extension to side, alterations to ground floor rear doors and increased width of rear dor...

Brighton And Hove 6 Jul 2026
BH2026/01582 2 Jul 2026 Registered

380 Old Shoreham Road Hove BN3 7GJ

Certificate of lawfulness for proposed loft conversion incorporating front rooflights and rear dormer.

Brighton And Hove 2 Jul 2026
BH2026/01578 2 Jul 2026 Registered

123C Lewes Road Brighton BN2 3QB

Removal of existing lower canopy and cladding, refresh and installation of new cladding, alterations to fenestration.

Brighton And Hove 2 Jul 2026
BH2026/01587 2 Jul 2026 Registered

Flat 1 36 First Avenue Hove BN3 2FF

Erection of single storey outbuilding to rear.

Brighton And Hove 2 Jul 2026
BH2026/01572 1 Jul 2026 Registered

16 Hastings Road Brighton BN2 3AF

Certificate of lawfulness for proposed erection of rear dormer.

Brighton And Hove 1 Jul 2026
BH2026/01573 1 Jul 2026 Registered

1 Melrose Avenue Portslade BN41 2LT

Erection of wrap around single storey side and rear extension.

Brighton And Hove 1 Jul 2026
BH2026/01576 1 Jul 2026 Registered

19 Spring Street Brighton BN1 3EF

Erection of first-floor rear extension and mono-pitched roof with rooflight together with small roof terrace above accessed from second floor.

Brighton And Hove 1 Jul 2026
BH2026/01570 30 Jun 2026 Registered

8 Albany Villas Hove BN3 2RU

Repositioning of front pillars to improve driveway access, addition of conservation rooflight above staircase in side roof and replacment of garden sh...

Brighton And Hove 30 Jun 2026
BH2026/01565 30 Jun 2026 Registered

157 - 162 Western Road Brighton BN1 2BB

Creation of 2no. new porticos to north-west elevation at ground floor, one with access door and one with blank wall panel.

Brighton And Hove 30 Jun 2026
BH2026/01569 30 Jun 2026 Registered

Flat 2 4 Third Avenue Hove BN3 2PD

Removal of existing garden store and replacement with new structure of the same footprint with new flat roof of slightly raised height and black, wood...

Brighton And Hove 30 Jun 2026
BH2026/01568 30 Jun 2026 Registered

Flat 2 4 Third Avenue Hove BN3 2PD

Removal of existing garden store and replacement with new structure of the same footprint with new flat roof of slightly raised height and black, wood...

Brighton And Hove 30 Jun 2026
BH2026/01548 29 Jun 2026 Registered

23 Down Terrace Brighton BN2 9ZJ

Prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.0m, for which th...

Brighton And Hove 29 Jun 2026
BH2026/01554 29 Jun 2026 Registered

Flat 4 36 Westbourne Gardens Hove BN3 5PP

Erection of rear dormer and revised fenestration.

Brighton And Hove 29 Jun 2026
BH2026/01562 29 Jun 2026 Registered

20 Brooker Street Hove BN3 3YX

Roof alterations to include front rooflights and rear dormer, erection of single storey side/rear infill extension with rooflights, revised fenestrati...

Brighton And Hove 29 Jun 2026
BH2026/01560 29 Jun 2026 Registered

13 Ravenswood Drive Brighton BN2 6WL

Certificate of lawfulness for proposed erection of single storey rear extension.

Brighton And Hove 29 Jun 2026
BH2026/01546 26 Jun 2026 Registered

80 George Street Hove BN3 3YE

Two-storey rear extension to create two studio flats over ground and first floors, with first floor accessed via George Street and ground floor access...

Brighton And Hove 26 Jun 2026
BH2026/01530 24 Jun 2026 Registered

Apartment 2 West View 99 Marine Drive Rottingdean Brighton BN2 7GE

Certificate of Lawfulness for the proposed siting a mobile home for incidental use to the main dwelling house.

Brighton And Hove 24 Jun 2026
BH2026/01536 24 Jun 2026 Registered

1 Bazehill Road Rottingdean Brighton BN2 7DB

Certificate of Lawfulness for the proposed replacement of existing conservatory walls, roof and external doors to the garden. Installation of new beam...

Brighton And Hove 24 Jun 2026
BH2026/01533 24 Jun 2026 Registered

Theatre Royal 35 Bond Street Brighton BN1 1SD

Replacement of existing timber-framed single-glazed windows with new timber-framed double-glazed windows to east facing principal elevation.

Brighton And Hove 24 Jun 2026
BH2026/01532 24 Jun 2026 Registered

Theatre Royal 35 Bond Street Brighton BN1 1SD

Replacement of existing timber-framed single-glazed windows with new timber-framed double-glazed windows to east facing principal elevation.

Brighton And Hove 24 Jun 2026
BH2026/01528 23 Jun 2026 Registered

13 Second Avenue Hove BN3 2LL

Conversion of existing hotel (C1) to create 5no. one-bed flats and 4no. two-bed flats (C3). Roof alterations incorporating rear dormer and 3no. front ...

Brighton And Hove 23 Jun 2026
BH2026/01504 22 Jun 2026 Registered

108 Godwin Road Hove BN3 7FT

Removal of existing outbuilding and erect a granny annex outbuilding.

Brighton And Hove 22 Jun 2026
BH2026/01516 22 Jun 2026 Registered

3 Temple Street Brighton BN1 3BH

Remedial damp proofing works to ground floor kitchen, basement and former coal chute opening. Removal of external timber decking.

Brighton And Hove 22 Jun 2026
BH2026/01518 22 Jun 2026 Registered

86 - 87 Western Road Hove BN3 1JB

External alterations including new entranceway tiling and gate to front elevation and removal of existing retractable awning. Internal alterations to ...

Brighton And Hove 22 Jun 2026
BH2026/01517 22 Jun 2026 Registered

86 - 87 Western Road Hove BN3 1JB

External alterations including new entranceway tiling and gate to front elevation and removal of existing retractable awning.

Brighton And Hove 22 Jun 2026
BH2026/01507 22 Jun 2026 Registered

Flat 6 15 Brunswick Square Hove BN3 1EH

Replacement of existing lead rolled roof.

Brighton And Hove 22 Jun 2026
BH2026/01514 22 Jun 2026 Registered

11 Havelock Road Brighton BN1 6GL

Erection of single storey side return extension with rooflights.

Brighton And Hove 22 Jun 2026
BH2026/01503 19 Jun 2026 Registered

8 Sudeley Terrace Brighton BN2 1HD

Loft conversion and roof alterations including no. 2 rooflights on the front elevation including raising the ridge line and rear lower ground floor ex...

Brighton And Hove 19 Jun 2026
BH2026/01502 19 Jun 2026 Registered

9 Dyke Road Avenue Hove BN3 6QA

Erection of flat roof rear dormer, addition of roof lights to front and side elevations and alterations to approved drawings under ref. BH2022/01786

Brighton And Hove 19 Jun 2026
BH2026/01488 18 Jun 2026 Registered

21 Glebe Villas Hove BN3 5SL

Prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.4m, for which th...

Brighton And Hove 18 Jun 2026
BH2026/01484 18 Jun 2026 Registered

Flat 1 And Flat 2 18 - 19 Adelaide Crescent Hove BN3 2JF

Internal structural alterations and associated internal remedial works to Flat 1 and Flat 2.

Brighton And Hove 18 Jun 2026
BH2026/01487 18 Jun 2026 Registered

21 Beechwood Close Brighton BN1 8EP

Installation of raised front decking.

Brighton And Hove 18 Jun 2026
BH2026/01491 18 Jun 2026 Registered

1 Crown Gardens Brighton BN1 3LD

Reinstatement of the gate entrance at front of house with steps to garden.

Brighton And Hove 18 Jun 2026
BH2026/01473 17 Jun 2026 Registered

45 Upper Rock Gardens Brighton BN2 1QF

Bay in rear garden - Remove to ground level

Brighton And Hove 17 Jun 2026
BH2026/01466 15 Jun 2026 Registered

Ground Floor Flat 61 Preston Road Brighton BN1 4QE

Erection of a single-storey detached garden building with a mono-pitch roof to the end of the rear garden for use as a garden studio, ancillary to the...

Brighton And Hove 15 Jun 2026
BH2026/01461 15 Jun 2026 Registered

8 Freshfield Place Brighton BN2 0BN

Proposed second-floor rear extension above the existing outrigger and fitment of new front elevation Conservation Rooflight to replace the existing.

Brighton And Hove 15 Jun 2026
BH2026/01458 15 Jun 2026 Registered

21 Donnington Road Brighton BN2 6WH

Certificate of Lawfulness for proposed single storey timber mobile home to the rear of the garden.

Brighton And Hove 15 Jun 2026
BH2026/01451 15 Jun 2026 Registered

87 Mile Oak Road Portslade BN41 2PJ

Certificate of Lawfulness for proposed rear and side dormers.

Brighton And Hove 15 Jun 2026
BH2026/01455 15 Jun 2026 Registered

Flat 2 11 Roundhill Crescent Brighton BN2 3FQ

Erection of outbuilding in rear garden to be used as home office.

Brighton And Hove 15 Jun 2026
BH2026/01456 15 Jun 2026 Registered

Flat 2 11 Roundhill Crescent Brighton BN2 3FQ

Erection of outbuilding in rear garden to be used as home office.

Brighton And Hove 15 Jun 2026
BH2026/01440 12 Jun 2026 Registered

15 Nevill Road Hove BN3 7BP

Extension and alterations to existing garage to form an ancillary garden room and storage.

Brighton And Hove 12 Jun 2026
BH2026/01438 12 Jun 2026 Registered

Flat B 32 Brunswick Square Hove BN3 1ED

Repair works to pitched slate roof and flat lead roof to rear including slate repairs, replacement timber bays, new structural decking and waterproof ...

Brighton And Hove 12 Jun 2026
BH2026/01431 11 Jun 2026 Registered

17 Highview Way Brighton BN1 8WS

Prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.80m, for which t...

Brighton And Hove 11 Jun 2026
BH2026/01411 9 Jun 2026 Registered

60 Elm Drive Hove BN3 7JJ

Prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.0m, for which th...

Brighton And Hove 9 Jun 2026
BH2026/01406 9 Jun 2026 Registered

3 Prince's Crescent Brighton BN2 3RA

Proposed ground floor wraparound extension, installation of solar panels, air source heat pump and associated works.

Brighton And Hove 9 Jun 2026
BH2026/01413 9 Jun 2026 Pending

4 Roedean Crescent Brighton BN2 5RH

Removal of existing mock Tudor panelling and tiles to the north, east and west elevations replacing with white render, removal of existing single-stor...

Brighton And Hove 9 Jun 2026
BH2026/01392 8 Jun 2026 Registered

73 Graham Avenue Brighton BN1 8HB

Certificate of lawfulness for proposed loft conversion incorporating hip to gable extension, rear dormer and front roof lights.

Brighton And Hove 8 Jun 2026
BH2026/01400 8 Jun 2026 Registered

17 Greenleas Hove BN3 8AD

Certificate of lawfulness for proposed roof alterations/extension including hip to gable roof extension, rear dormer and front rooflights.

Brighton And Hove 8 Jun 2026
BH2026/01399 8 Jun 2026 Registered

20 Glendor Road Hove BN3 4LP

Certificate of lawfulness for proposed roof alterations/extensions including removal of chimney to rear, erection of side dormer and insertion of rear...

Brighton And Hove 8 Jun 2026
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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 — 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 new extensions applications in Brighton and Hove?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Brighton and Hove. You can also narrow the alert to a postcode, street, or drawn area.

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