House extensions in Arun

Arun received 517 householder applications in the last 12 months - about 10 a week. Rear extensions and garage works are the most common. Of the 391 decided so far, 367 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 130 applications
Yesterday Undecided M/59/26/HH

2 Deepdene Close Middleton-on-sea PO22 6HX

Single storey side extension, roof extension to facilitate conversion of loft to habitable use with rear dormer and balcony, alterations to lower grou...

Arun
21 Oct 2026 Undecided WA/101/26/HH

Myrtle Cottage The Street Walberton BN18 0PJ

Removal and replacement of a defective chimney stack, side gable walls and an area of pitched roof to the rear of the property. (This application may ...

Arun
21 Oct 2026 Undecided LU/257/26/PL

Police Station East Street Littlehampton BN17 6AR

New higher security fencing and gate systems. This application is in CIL Zone 4 (Zero Rated) as other development.

Arun
19 Oct 2026 Undecided AL/80/26/HH

27 Ivy Lane Westergate Aldingbourne PO20 3RE

Conversion of an existing brick outbuilding/ room within the residential property to provide an additional bedroom.

Arun
19 Oct 2026 Undecided FP/131/26/CLP

36 Firs Avenue Felpham PO22 8QA

Certificate of lawfulness for the proposed alterations to the roof to add further habitable space via two new dormers, and the installation of roof li...

Arun
19 Oct 2026 Undecided M/69/26/HH

4 Friary Close Middleton-on-sea PO22 6PB

Demolition of side extension and canopy. Erection of single storey front and side extension.

Arun
19 Oct 2026 Undecided WA/104/26/HH

Woodfield House Arundel Road Fontwell BN18 0SD

Demolition of existing single storey side and rear extension. Replacement with part two storey, part single storey side and rear extension and new fro...

Arun
16 Oct 2026 Undecided K/26/26/HH

Blue Skies 17 Coastal Road East Preston BN16 1SJ

Two storey side extension.

Arun
16 Oct 2026 Undecided FG/113/26/HH

12 Little Paddocks Ferring BN12 5NJ

Retention of front porch as built (variation from FG/56/26/HH) and external cladding to front elevation and parts of side elevations.

Arun
15 Oct 2026 Undecided BR/178/26/CLP

3 Oak Grove Bognor Regis PO22 9JL

Application for certificate of lawfulness for proposed construction of a detached garden office within the rear garden, ancillary to the main dwelling...

Arun
15 Oct 2026 Undecided FP/126/26/CLP

Barnend, 7 Burley Road Felpham Bognor Regis PO22 7NF

Application for certificate of lawfulness for proposed change of use of part of existing garage to bedroom.

Arun
14 Oct 2026 Undecided FG/102/26/HH

10 Ferring Close Ferring BN12 5QT

Single storey side extension with alterations to the conservatory door.

Arun
14 Oct 2026 Undecided FG/111/26/CLP

26 Ferringham Lane Ferring BN12 5LU

Application for certificate of lawfulness for a proposed single storey orangery structure with attached glazed covered canopy to replace existing cons...

Arun
14 Oct 2026 Undecided AW/184/26/HH

4 Leecroft Aldwick PO21 3SY

Single storey rear and side extension and changes to fenestrations.

Arun
13 Oct 2026 Undecided LU/233/26/CLP

56 Timberleys Littlehampton BN17 6QB

Application for the certificate of lawfulness for a proposed use of removing the existing garage door and associated frame/trimmings, followed by infi...

Arun
13 Oct 2026 Undecided R/143/26/HH

13 Seafield Road Rustington BN16 2SE

A new vehicular access/dropped curb. Subject to planning permission for the dropped curb, front garden landscaped to provide hard standing for parking...

Arun
12 Oct 2026 Undecided FP/125/26/HH

4 Admiralty Gardens Felpham PO22 7DP

Single and two storey front, side and rear extensions. Front and rear dormers. External alterations including changes to external materials and bounda...

Arun
9 Oct 2026 Undecided WA/94/26/PL

Sunny Corner Copse Lane Walberton BN18 0QH

1 No. new self-build dwelling, garage and outbuilding with associated landscaping. This application is a Departure from the Development Plan and is in...

Arun
9 Oct 2026 Undecided AL/89/26/HH

Hazeldene Nyton Road Aldingbourne PO20 3TX

Installation of a front wall and electric gate including a new dropped kerb.

Arun
9 Oct 2026 Undecided BE/81/26/HH

99 North Bersted Street Bersted PO22 9AF

Single storey side extension with habitable roof, including front and rear dormers, following demolition of existing outbuildings. Resubmission of app...

Arun
8 Oct 2026 Undecided LU/241/26/PDH

33 Helyers Green Littlehampton BN17 7HB

Notification under extended permitted development rights for rear single storey extension, measuring 4m from existing dwellinghouse, with a height of ...

Arun
8 Oct 2026 Undecided A/148/26/HH

Brise de mer Ham Manor Way Angmering BN16 4JQ

Rear extension.

Arun
7 Oct 2026 Undecided AL/59/26/PL

The Coach House Arundel Road Fontwell BN18 0SX

1st floor rear dormer to increase office space & headroom. In CIL Zone 3 (zero rated) as all other development.

Arun
7 Oct 2026 Undecided LU/239/26/PL

Littlehampton Sportsfield St Floras Road Littlehampton BN17 6BD

Erection and re-location of new detached pre-fabricated garage building for theatrical props and scenery storage, including demolition of existing sto...

Arun
7 Oct 2026 Undecided R/148/26/PL

The Gilberts Harsfold Road Rustington BN16 2QP

5 No. additional off-street car parking spaces within existing residential site at The Gilberts, Rustington. The spaces will be formed through the par...

Arun
6 Oct 2026 Undecided Y/62/26/CLP

14 Bittern Avenue Yapton BN18 0BW

Lawful development certificate for the proposed partial internal conversion of existing domestic garage to form a home office ancillary to the main dw...

Arun
6 Oct 2026 Undecided LU/246/26/CLP

Littlehampton Wave Sea Road Littlehampton BN16 2NA

Lawful development certificate for a proposed concrete foundation and storage container.

Arun
6 Oct 2026 Undecided F/46/26/CLP

22 Johnson Way Ford BN18 0TS

Lawful development certificate for a proposed single storey rear extension.

Arun
6 Oct 2026 Undecided CM/28/26/HH

1-2 Kents Dairy Cottages Brookpit Lane Climping BN17 5QU

Erection of single storey detached greenhouse to rear. This application may affect the setting of a listed building.

Arun
6 Oct 2026 Undecided FP/116/26/HH

28 New Barn Lane Felpham PO22 8LN

Rear/side extension with alterations to fenestration and associated works.

Arun
5 Oct 2026 Undecided BE/66/26/PL

Heath Place Ash Grove Bognor Regis PO22 9SH

Installation of an external passenger lift. Is in CIL Zone 4 (Zero Rated) as other development.

Arun
5 Oct 2026 Undecided BR/170/26/CLP

19 Crescent Road Bognor Regis PO21 1QG

Lawful development certificate for a proposed rear dormer roof extension.

Arun
5 Oct 2026 Undecided Y/61/26/PDH

9 Tack Lee Road Yapton BN18 0HB

Notification under extended permitted development rights for a single storey rear extension measuring 5m from existing dwellinghouse, with a height of...

Arun
2 Oct 2026 Undecided BE/76/26/HH

12 South Way Bersted PO21 5HF

Demolition of existing conservatory, WC, lean-to and side bay window. Erection of a single-storey wrap-around extension.

Arun
1 Oct 2026 Undecided BR/145/26/HH

51 Highcroft Crescent Bognor Regis PO22 8DJ

Installation of a single storey rear extension and the demolition of an existing conservatory.

Arun
30 Sept 2026 Undecided BR/171/26/PL

32 London Road Bognor Regis PO21 1PY

Single storey flat roof extension to the rear of property, including installation of external associated air conditioning plant and smoking shelter to...

Arun
30 Sept 2026 Undecided M/65/26/HH

The Nook Ancton Lane PO22 6NN

Construction of a single-storey rear/side infill extension adjoining the existing conservatory, replacement of the existing conservatory roof with a n...

Arun
30 Sept 2026 Undecided R/145/26/HH

7 Ruston Park Rustington BN16 2AB

Single storey rear extension and loft conversion, the installation of roof lights and the alteration of fenestration.

Arun
29 Sept 2026 Undecided R/144/26/PDH

6 Walders Road Rustington BN16 3PE

Notification under extended permitted development rights for a single storey rear extension measuring 5.25m from existing dwellinghouse, with a height...

Arun
29 Sept 2026 Undecided M/64/26/HH

5 Sea Way Elmer Middleton-on-sea PO22 6JX

Single-storey front, side and rear extensions, new roof terrace, replacement windows and doors, new solar panels, external alterations and associated ...

Arun
29 Sept 2026 Undecided FG/101/26/HH

17 Meadow Way Ferring BN12 5LD

Proposed two-storey side extension and single storey rear extension.

Arun
28 Sept 2026 Undecided M/54/26/CLP

Alvine Cottage Yapton Road Middleton-on-sea PO22 6DT

Lawful development certificate for a proposed provision of a mobile home/caravan within curtilage of and ancillary to main dwelling.

Arun
25 Sept 2026 Undecided K/21/26/HH

79 Golden Avenue East Preston BN16 1QU

Proposed first floor rear extension built above existing ground floor footprint, including the removal of the existing chimney.

Arun
25 Sept 2026 Undecided M/62/26/HH

31 The Layne Elmer Middleton-on-sea PO22 6JL

Proposed two storey rear extension, side extension and side dormers.

Arun
23 Sept 2026 Undecided LU/227/26/CLP

1 Seaton Close Littlehampton BN17 7LQ

Lawful development certificate for the proposed demolition and erection of a single storey side extension.

Arun
23 Sept 2026 Undecided BE/64/26/HH

15 Brazwick Avenue Bersted PO21 5DZ

Single storey rear extension, following demolition of existing rear conservatory.

Arun
23 Sept 2026 Undecided FG/93/26/HH

Field View Tamarisk Way BN12 5ER

Retrospective addition of top trellis to the majority of the boundary fence. The existing fence to be increased in height.

Arun
22 Sept 2026 Undecided BR/169/26/CLP

89 Hampshire Avenue Bognor Regis PO21 5JH

Lawful development certificate for the proposed erection of a detached timber garden workshop.

Arun
22 Sept 2026 Undecided A/143/26/HH

Westerley Ham Manor Way Angmering BN16 4JQ

Proposed rear orangery, following removal of existing conservatory.

Arun
22 Sept 2026 Undecided M/60/26/HH

4 The Hard Elmer Middleton-on-sea PO22 6JS

First floor extension and increase in ridge height to facilitate the creation of first floor, flat roof dormer, new porch canopy and replacement of ch...

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

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