House extensions in Worthing

Worthing received 300 householder applications in the last 12 months - about 6 a week. Rear extensions and dormers are the most common. Of the 208 decided so far, 199 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

126 last 90 days
|
38 last 30 days
|
17 last 14 days

Filter applications

Date received Last 90 days

Pick a year, or click two to span the range between them. Records before 2026 come from the archive.

Keywords in the address or description
Match

Literal text matches. For application types (extensions, solar, change of use...) use the categories above - no need to recreate them as keywords.

Showing 50 of 126 applications
AWDM/0809/26 2 Jul 2026 Registered

57 Hollingbury Gardens Worthing West Sussex BN14 0EB

Ground floor front infill extension; raising of roof ridge with gable ends and rooflights to create first floor accommodation within roof space (re-su...

Worthing 2 Jul 2026
AWDM/0802/26 1 Jul 2026 Registered

2 Central Avenue Worthing West Sussex BN14 0DR

Proposed additional storey resulting in a two-storey dwelling with single storey front extension and associated works

Householder Application Worthing 1 Jul 2026
AWDM/0797/26 30 Jun 2026 Registered

74 Tower Road Lancing West Sussex BN15 9HT

Householder application for permitted development for prior approval for single storey extension to rear of property measuring 4m from rear wall of th...

General Permitted Development Extensions Worthing 30 Jun 2026
AWDM/0796/26 30 Jun 2026 Registered

94 Eastern Avenue Shoreham-by-sea West Sussex BN43 6PE

Householder application for permitted development for prior approval for single storey extension to rear of property measuring 4m from rear wall of th...

General Permitted Development Extensions Worthing 30 Jun 2026
AWDM/0789/26 29 Jun 2026 Registered

9 Mulberry Close Shoreham-by-sea West Sussex BN43 6TF

Proposed side/rear single storey infill extension

Householder Application Worthing 29 Jun 2026
AWDM/0790/26 29 Jun 2026 Registered

9 Fowey Close Shoreham-by-sea West Sussex BN43 5HE

Proposed enlargement of existing front-facing dormer, replacement and enlargement of rear-facing dormer, and demolition of conservatory

Householder Application Worthing 29 Jun 2026
AWDM/0795/26 29 Jun 2026 Registered

24 Lime Tree Avenue Worthing West Sussex BN14 0DL

Wraparound dormer to side and rear roofslopes

Worthing 29 Jun 2026
AWDM/0792/26 29 Jun 2026 Registered

14 Cobden Road Worthing Central Worthing West Sussex BN11 4BD

Single storey side / rear infill extension.

Worthing 29 Jun 2026
AWDM/0786/26 26 Jun 2026 Awaiting decision

7 The Avenue Worthing West Sussex BN12 6HJ

Single storey rear extension. Rear platform and ramp.

Worthing 26 Jun 2026
AWDM/0784/26 25 Jun 2026 Awaiting decision

29 Lansdowne Road Worthing West Sussex BN11 4NF

Garage conversion. Alteration to existing fenestration.

Householder Application Worthing 25 Jun 2026
AWDM/0782/26 24 Jun 2026 Awaiting decision

37 Mardale Road Worthing West Sussex BN13 2AY

Application for Certificate of Lawfulness for proposed rear extension with 1no. rooflight and loft conversion including a rear-facing dormer, 1no. sid...

Certificate Proposed Lawful Use/Dev Worthing 24 Jun 2026
AWDM/0783/26 24 Jun 2026 Registered

49 Hawthorn Road Worthing West Sussex BN14 9LT

Single storey rear extension

Householder Application Worthing 24 Jun 2026
AWDM/0781/26 24 Jun 2026 Registered

5 Silverdale Drive Sompting West Sussex BN15 9SH

PROPOSED SINGLE STOREY REAR EXTENSION, EXTENDED REAR BOX ROOF DORMER AND NEW SIDE WINDOWS

Householder Application Worthing 24 Jun 2026
AWDM/0777/26 23 Jun 2026 Decided

179 Upper Shoreham Road Shoreham-by-sea West Sussex BN43 6TA

Application for Certificate of Lawfulness for loft conversion with hip to gable extension, rear dormer and front roof lights; chimney removed

Certificate Proposed Lawful Use/Dev Worthing 23 Jun 2026
AWDM/0779/26 23 Jun 2026 Registered

18 West Avenue Worthing West Sussex BN11 5LU

Remodelling of existing bungalow involving removal of existing extension(s) to east elevation, erection of gabled 2-storey extension to east elevation...

Householder Application Worthing 23 Jun 2026
AWDM/0768/26 22 Jun 2026 Registered

174 Downsway Southwick West Sussex BN42 4WF

Hip to gable roof extension, extension of front and rear dormers, extension of porch to front

Householder Application Worthing 22 Jun 2026
AWDM/0770/26 22 Jun 2026 Registered

51 Grove Road Worthing West Sussex BN14 9DQ

Householder application for permitted development for prior approval for single storey extension to rear of property measuring 4.11m from rear wall of...

General Permitted Development Extensions Worthing 22 Jun 2026
AWDM/0771/26 22 Jun 2026 Registered

37 Downside Avenue Worthing West Sussex BN14 0EU

Proposed single storey rear extension to replace existing conservatory

Householder Application Worthing 22 Jun 2026
AWDM/0763/26 22 Jun 2026 Registered

19 Nelson Close Sompting West Sussex BN15 0LY

Single storey flat roof rear extension replacement of existing concrete ground floor outer panels and replaced with new external facing brick leaf

Householder Application Worthing 22 Jun 2026
AWDM/0775/26 22 Jun 2026 Registered

141 Dominion Road Worthing West Sussex BN14 8LD

Construction of new dropped kerb and vehicular access to the property.

Worthing 22 Jun 2026
AWDM/0761/26 19 Jun 2026 Awaiting decision

38 Crowborough Drive Worthing West Sussex BN12 4UQ

Remove rear conservatory. Proposed rear extension and alterations to existing garage in connection with conversion to a habitable room.

Worthing 19 Jun 2026
AWDM/0762/26 19 Jun 2026 Awaiting decision

7 Southview Drive Worthing West Sussex BN11 5HU

Single-storey front (east) extension to provide new porch and in association with conversion of integral garage to a habitable room

Worthing 19 Jun 2026
AWDM/0752/26 18 Jun 2026 Registered

11 Adur Avenue Shoreham-by-sea West Sussex BN43 5NN

Demolition of rear projection and conservatory and erection of single storey flat roof extension

Householder Application Worthing 18 Jun 2026
AWDM/0744/26 17 Jun 2026 Registered

81 Old Shoreham Road Shoreham-by-sea West Sussex BN43 5TF

Single storey rear extension

Worthing 17 Jun 2026
AWDM/0735/26 16 Jun 2026 Registered

106 Meadow Road Worthing West Sussex BN11 2SE

Single storey rear extension

Householder Application Worthing 16 Jun 2026
AWDM/0740/26 16 Jun 2026 Registered

32 Lime Tree Avenue Worthing West Sussex BN14 0DL

Ground floor rear extension; roof enlargement with raised ridge, rear dormer above ground floor extension and front rooflights; and front porch.

Householder Application Worthing 16 Jun 2026
AWDM/0734/26 16 Jun 2026 Registered

63 Boundstone Lane Sompting West Sussex BN15 9QU

Proposed roof extension to north plus dormers to west side and rear

Householder Application Worthing 16 Jun 2026
AWDM/0736/26 16 Jun 2026 Registered

44 Goring Way Worthing West Sussex BN12 4TY

Single storey rear extension

Householder Application Worthing 16 Jun 2026
AWDM/0742/26 16 Jun 2026 Registered

32 Pratton Avenue Lancing West Sussex BN15 9NU

Proposed single storey rear extension and new windows in existing side wall.

Householder Application Worthing 16 Jun 2026
AWDM/0743/26 16 Jun 2026 Registered

32 Pratton Avenue Lancing West Sussex BN15 9NU

Application for Certificate of Lawfulness for Proposed hip to gable loft conversion including rear dormer and 2no. rooflights

Certificate Proposed Lawful Use/Dev Worthing 16 Jun 2026
AWDM/0728/26 15 Jun 2026 Awaiting decision

17 Markwick Mews Worthing West Sussex BN11 1DZ

Application for Certificate of Lawfulness for Proposed single storey rear extension

Certificate Proposed Lawful Use/Dev Worthing 15 Jun 2026
AWDM/0729/26 15 Jun 2026 Registered

Flat 3 33 Winchester Road Worthing West Sussex BN11 4DH

Proposed replacement Heritage Rose sliding sash UPVC windows on North elevation

Full Application Worthing 15 Jun 2026
AWDM/0725/26 12 Jun 2026 Awaiting decision

12 Chelwood Avenue Worthing West Sussex BN12 4QP

Removal of existing rear conservatory and erection of part single/part 2-storey rear extension, plus single-storey (north) side extension and alterati...

Householder Application Worthing 12 Jun 2026
AWDM/0722/26 11 Jun 2026 Awaiting decision

16 Kingston Way Shoreham-by-sea West Sussex BN43 6YA

Amendment to previously approved AWDM/1140/23, Amendments: extension of side dormers to square off hip-to-gable extension at rear, changes to side win...

Householder Application Worthing 11 Jun 2026
AWDM/0716/26 10 Jun 2026 Awaiting decision

41 Sea Lane Worthing West Sussex BN12 4QD

Single storey rear extension. Alteration to existing fenestration. Additional vehicle access and alterations to front boundary.

Householder Application Worthing 10 Jun 2026
AWDM/0719/26 10 Jun 2026 Awaiting decision

28B Twitten Way Worthing West Sussex BN14 7JX

Rooms in enlarged roof consisting of hip-to-gable roof extensions to north and south sides, front (west) and rear (east) dormers finished in vertical ...

Householder Application Worthing 10 Jun 2026
AWDM/0708/26 9 Jun 2026 Decided

56 Chute Avenue Worthing West Sussex BN13 3DS

Proposed single story rear extension

Householder Application Worthing 9 Jun 2026
AWDM/0711/26 9 Jun 2026 Decided

8 Cumberland Avenue Worthing West Sussex BN12 6JX

Application for Certificate of Lawfulness for Proposed single-storey side extension to single dwelling.

Certificate Proposed Lawful Use/Dev Worthing 9 Jun 2026
AWDM/0700/26 8 Jun 2026 Registered

11 Rugby Road Worthing West Sussex BN11 4PZ

Removal of existing (west) side extension and garage, erection of two-storey (west) side extension and attached garage, single-storey rear (south) ext...

Householder Application Worthing 8 Jun 2026
AWDM/0697/26 8 Jun 2026 Awaiting decision

21 Queens Road Lancing West Sussex BN15 8ED

Retrospective planning application for the retention of the charcoal vertical cladding and clear glazing to the north facing window in relation to the...

Householder Application Worthing 8 Jun 2026
AWDM/0696/26 8 Jun 2026 Registered

66 Buckingham Road Shoreham-by-sea West Sussex BN43 5UD

Proposed first floor extensions above existing ground floor side and rear extensions with raised ridge height and accommodation within extended roof i...

Householder Application Worthing 8 Jun 2026
AWDM/0692/26 5 Jun 2026 Registered

184 Manor Hall Road Southwick West Sussex BN42 4NH

Demolition of existing garage and construction of new detached garage. Enlargement of existing side and rear extensions to form a wraparound extension...

Householder Application Worthing 5 Jun 2026
AWDM/0693/26 5 Jun 2026 Decided

3 Firle Road Lancing West Sussex BN15 0NY

Application for a Certificate of Lawfulness for a proposed single-storey side extension.

Certificate Proposed Lawful Use/Dev Worthing 5 Jun 2026
AWDM/0691/26 5 Jun 2026 Decided

49 Greet Road Lancing West Sussex BN15 9NS

Application for Certificate of Lawfulness for proposed expansion of habitable room in the loft, including hip-to-gable roof extension, 3no front-facin...

Certificate Proposed Lawful Use/Dev Worthing 5 Jun 2026
AWDM/0695/26 5 Jun 2026 Decided

7 Southsea Avenue Worthing West Sussex BN12 4BN

Application for Certificate of Lawfulness for proposed single-storey rear extension and loft conversion with a dormer to the south, hip-to-gable exten...

Certificate Proposed Lawful Use/Dev Worthing 5 Jun 2026
AWDM/0683/26 4 Jun 2026 Decided

5 Crabtree Lane Lancing West Sussex BN15 9PF

Application for Certificate of Lawfulness for proposed loft conversion with hip to gable roof extension, rear dormer and front rooflights

Certificate Proposed Lawful Use/Dev Worthing 4 Jun 2026
AWDM/0681/26 3 Jun 2026 Registered

14 Hammy Close Shoreham-by-sea West Sussex BN43 6BL

Rooms in roof with front and rear dormers; single storey rear extension; and removal of garage.

Householder Application Worthing 3 Jun 2026
AWDM/0818/26 3 Jun 2026 Registered

40A High Street Worthing West Sussex BN11 1LL

Replacement of 3no. timber sash windows and repair of 3no. timber sash windows

Worthing 3 Jun 2026
AWDM/0672/26 2 Jun 2026 Registered

179 - 181 Brighton Road Worthing West Sussex BN11 2EX

Proposed vehicular access.

Full Application Worthing 2 Jun 2026
AWDM/0656/26 28 May 2026 Decided

24 Burnham Road Worthing West Sussex BN13 2NN

Householder application for permitted development for prior approval for single storey extension to rear of property measuring 4.05m from rear wall of...

General Permitted Development Extensions Worthing 28 May 2026
Recency
Last 2 weeks
2-4 weeks
1-2 months
Older

Get free email alerts for new extensions applications in Worthing

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

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