House extensions in Crawley

Crawley received 235 householder applications in the last 12 months - about 5 a week. Rear extensions and garage works are the most common. Of the 154 decided so far, 138 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 64 applications
Yesterday Awaiting Decision CR/2026/0615/FUL

Crawley Leisure Park, Unit 10,London Road, West Green, Crawley

Erection of pergola with retractable sun/rain cover. Installation of 2x pendant support lights. Alterations to external elevations including sanding a...

Full Planning Application Crawley
21 Oct 2026 Awaiting Decision CR/2026/0609/FUL

1 Magpie Walk, Northgate, Crawley

Erection of two storey side extension and single storey rear extension, incorporating associated alterations

Full Planning Application Crawley
20 Oct 2026 Awaiting Decision CR/2026/0605/192

113 Gales Drive, Three Bridges, Crawley

Certificate of Lawfulness for proposed garage conversion into habitable use and addition of a new doorway to the utility room.

Certificate of Lawfulness of Proposed Use Crawley
19 Oct 2026 Awaiting Decision CR/2026/0560/FUL

107 Ifield Drive, Ifield, Crawley

Create new vehicle crossover and dropped kerb. Demolish section of existing front boundary wall and construct permeable parking bay.

Full Planning Application Crawley
16 Oct 2026 Awaiting Decision CR/2026/0614/FUL

121-123 Turnpike House, High Street, Northgate, Crawley

Replacement of all existing windows and glazed screens within existing openings with black (RAL 9005) thermally broken aluminium frames and clear doub...

Full Planning Application Crawley
14 Oct 2026 Awaiting Decision CR/2026/0482/FUL

55 Tinsley Lane, Three Bridges, Crawley

Extension of raised rear patio area and erection of single-storey rear extension

Full Planning Application Crawley
14 Oct 2026 Awaiting Decision CR/2026/0607/192

29 Birkdale Drive, Ifield, Crawley

Certificate of Lawfulness for proposed conversion of garage into habitable space

Certificate of Lawfulness of Proposed Use Crawley
13 Oct 2026 Awaiting Decision CR/2026/0598/HPA

16 Southgate Drive, Southgate, Crawley

Prior notification for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 5 metres and h...

Prior Approval - Larger Household Extension Crawley
12 Oct 2026 Awaiting Decision CR/2026/0604/FUL

80 Tinsley Lane, Three Bridges, Crawley

Erection of two storey side extension, single storey front extension, front storm porch and extension of rear dormer

Full Planning Application Crawley
12 Oct 2026 Awaiting Decision CR/2026/0602/HPA

46 Denchers Plat, Langley Green, Crawley

Prior notification for the extension of existing single storey rear extension, which would extend beyond the rear wall of the original house by 4.5 me...

Prior Approval - Larger Household Extension Crawley
9 Oct 2026 Awaiting Decision CR/2026/0606/FUL

126 Ifield Road, West Green, Crawley

Proposed garage conversion and single storey side extension to form granny annexe

Full Planning Application Crawley
9 Oct 2026 Awaiting Decision CR/2026/0579/FUL

50 Town Mead, West Green, Crawley

Erection of a single storey rear extension

Full Planning Application Crawley
8 Oct 2026 Awaiting Decision CR/2026/0600/FUL

31 Furnace Farm Road, Furnace Green, Crawley

Erection of a single storey front extension

Full Planning Application Crawley
7 Oct 2026 Awaiting Decision CR/2026/0594/FUL

30 Kingscote Hill, Gossops Green, Crawley

Erection of first floor side extension and single storey front infill extension to include pitched roof over existing porch

Full Planning Application Crawley
7 Oct 2026 Awaiting Decision CR/2026/0550/192

29 Pearson Road, Pound Hill, Crawley

Certificate of Lawfulness for proposed loft conversion with hip to gable and rear dormer and 3 front roof windows.

Certificate of Lawfulness of Proposed Use Crawley
5 Oct 2026 Awaiting Decision CR/2026/0585/HPA

12 Tushmore Lane, Northgate, Crawley

Prior notification for the demolition of the existing rear conservatory and erection of a single storey rear extension, which would extend beyond the ...

Prior Approval - Larger Household Extension Crawley
2 Oct 2026 Awaiting Decision CR/2026/0546/192

46 The Glade, Furnace Green, Crawley

Certificate of Lawfulness for single storey side and rear extention and loft conversion with rear dormer and front roof windows

Certificate of Lawfulness of Proposed Use Crawley
1 Oct 2026 Awaiting Decision CR/2026/0584/HPA

26 Herrick Close, Pound Hill, Crawley

Prior notification for the demolition of existing conservatory and garage and erection of a single storey rear extension which would extend beyond the...

Prior Approval - Larger Household Extension Crawley
1 Oct 2026 Awaiting Decision CR/2026/0580/FUL

230 Ifield Road, West Green, Crawley

Erection of part single/two storey rear extension and single storey front porch extension

Full Planning Application Crawley
29 Sept 2026 Awaiting Decision CR/2026/0587/FUL

101 St Marys Drive,Pound Hill,Crawley,West Sussex

Erection of a single-storey annexe building in rear garden

Full Planning Application Crawley
29 Sept 2026 Awaiting Decision CR/2026/0569/HPA

4 Alicia Avenue, Pound Hill, Crawley, RH10 7AY

Prior notification for the demolition of existing rear conservatory and erection of a single storey rear extension with 2 roof windows, which would ex...

Prior Approval - Larger Household Extension Crawley
25 Sept 2026 Awaiting Decision CR/2026/0573/192

11 Byerley Way, Pound Hill, Crawley, RH10 7YU

Certificate of lawfulness for proposed garage conversion and installation of External Air Source Heat Pump (ASHP)

Certificate of Lawfulness of Proposed Use Crawley
24 Sept 2026 Awaiting Decision CR/2026/0577/FUL

1 Turner Walk, Tilgate, Crawley

Proposed single storey rear extension

Full Planning Application Crawley
24 Sept 2026 Awaiting Decision CR/2026/0552/FUL

20 Capel Lane, Gossops Green, Crawley, RH11 8HL

Erection of single storey rear extension

Full Planning Application Crawley
23 Sept 2026 Awaiting Decision CR/2026/0497/192

8 Penn Close, Langley Green, Crawley

Certificate of Lawfulness for proposed conversion of loft to habitable space

Certificate of Lawfulness of Proposed Use Crawley
22 Sept 2026 Awaiting Decision CR/2026/0567/FUL

1 Little Crabtree, West Green, Crawley, RH11 7HW

Erection of part single/part double storey rear extension following demolition of existing conservatory.

Full Planning Application Crawley
21 Sept 2026 Awaiting Decision CR/2026/0462/FUL

61 Milton Mount Avenue, Pound Hill, Crawley

Single storey rear extension, new porch and the alterations to the roof above the garage and porch. Change the tile hung on the front of the property ...

Full Planning Application Crawley
18 Sept 2026 Awaiting Decision CR/2026/0549/192

22 Kirdford Close, Ifield, Crawley, RH11 0DN

Certificate of Lawfulness for the proposed change of use from a dwellinghouse (Use Class C3) to a House in Multiple Occupation (Use Class C4), providi...

Certificate of Lawfulness of Proposed Use Crawley
17 Sept 2026 Awaiting Decision CR/2026/0559/FUL

HSBC, 9 The Boulevard, Northgate, Crawley

Replacement of main entrance door.

Full Planning Application Crawley
17 Sept 2026 Awaiting Decision CR/2026/0551/HPA

7 Denchers Plat, Langley Green, Crawley

Prior notification for the demolition of the existing conservatory and erection of single storey rear extension with 2 roof windows, which would exten...

Prior Approval - Larger Household Extension Crawley
16 Sept 2026 Awaiting Decision CR/2026/0558/FUL

111 Hazelwick Road,Three Bridges, Crawley

Removal of chimney stack and erection of single storey side/rear extension

Full Planning Application Crawley
16 Sept 2026 Awaiting Decision CR/2026/0506/FUL

135 Buckswood Drive, Gossops Green, Crawley

Erection of ground floor side and rear extension and conversion of garage to habitable space. Insertion of bay window on front elevation. Erection of ...

Full Planning Application Crawley
15 Sept 2026 Awaiting Decision CR/2026/0548/FUL

15 Warrington Close, Bewbush, Crawley, RH11 6ES

Erection of single storey rear and side extension

Full Planning Application Crawley
15 Sept 2026 Awaiting Decision CR/2026/0510/HPA

30 Peacock Walk, Bewbush, Crawley,

Prior notification for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4 metres and h...

Prior Approval - Larger Household Extension Crawley
14 Sept 2026 Awaiting Decision CR/2026/0553/FUL

32 New Street, Three Bridges, Crawley, RH10 1LW

Erection of single storey rear extension

Full Planning Application Crawley
14 Sept 2026 Awaiting Decision CR/2026/0540/FUL

33 Leighlands, Pound Hill, Crawley

Erection of two storey side extension and single storey rear extension

Full Planning Application Crawley
11 Sept 2026 Awaiting Decision CR/2026/0547/FUL

15 Byerley Way, Pound Hill, Crawley

Erection of two storey side extension

Full Planning Application Crawley
9 Sept 2026 Awaiting Decision CR/2026/0525/192

55 Tinsley Lane, Three Bridges, Crawley

Certificate of Lawfulness for proposed alteration to roof from hip to gable and proposed loft conversion with rear dormer and 4no. Roof lights on the ...

Certificate of Lawfulness of Proposed Use Crawley
8 Sept 2026 Awaiting Decision CR/2026/0530/192

39 Saxon Road, Pound Hill, Crawley

Certificate of Lawfulness for proposed demolition of existing rear conservatory structure and construction of new single-storey rear extension with 1 ...

Certificate of Lawfulness of Proposed Use Crawley
8 Sept 2026 Awaiting Decision CR/2026/0496/FUL

26 Theydon Close, Furnace Green, Crawley

Erection of single-storey front extension

Full Planning Application Crawley
4 Sept 2026 Awaiting Decision CR/2026/0531/FUL

11 Penfold Road, Maidenbower, Crawley

Demolition of conservatory and erection of a single storey rear extension

Full Planning Application Crawley
2 Sept 2026 Awaiting Decision CR/2026/0527/FUL

Saxons, Turners Hill Road, Pound Hill, Crawley

Proposed single storey side extension and conversion of garage to habitable space

Full Planning Application Crawley
1 Sept 2026 Awaiting Decision CR/2026/0492/192

19 Normanhurst Close, Three Bridges, Crawley

Demolition of conservatory and porch, conversion of garage and construction of new porch with pitched roof, reduction of first floor window to front e...

Certificate of Lawfulness of Proposed Use Crawley
28 Aug 2026 Awaiting Decision CR/2026/0453/FUL

68 North Road, Three Bridges, Crawley, RH10 1SF

Erection of single attached garage to side

Full Planning Application Crawley
27 Aug 2026 Withdrawn 7 Oct CR/2026/0494/HPA

74 Dickens Road, Tilgate, Crawley

Prior notification for the erection of a single storey rear extension with 3 roof lights, which would extend beyond the rear wall of the original hous...

Prior Approval - Larger Household Extension Crawley
26 Aug 2026 Approved 19 Oct CR/2026/0467/FUL

104 Gales Drive, Three Bridges, Crawley

Erection of single storey rear extension and conversion of existing integral garage to habitable accommodation with associated external alterations

Full Planning Application Crawley
25 Aug 2026 Awaiting Decision CR/2026/0426/FUL

16 Goffs Park Road, Southgate, Crawley

Erection of single storey side and rear extension. Creation of dropped kerb and vehicular access onto Goffs Park Road

Full Planning Application Crawley
25 Aug 2026 Awaiting Decision CR/2026/0415/FUL

52 Milton Mount Avenue, Pound Hill, Crawley

Proposed single storey rear extension and Internal Alterations

Full Planning Application Crawley
24 Aug 2026 Awaiting Decision CR/2026/0508/FUL

2 Friends Close, Langley Green, Crawley

Erection of single storey front extension

Full Planning Application Crawley
24 Aug 2026 Awaiting Decision CR/2026/0469/192

4 Keble Close, Pound Hill, Crawley

Certificate of Lawfulness for proposed conversion of integral garage into habitable space

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

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