House extensions in Hounslow

Hounslow received 1,269 householder applications in the last 12 months - about 24 a week. Rear extensions and side extensions are the most common. Of the 1,002 decided so far, 810 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 332 applications
Yesterday REGISTERED P/2026/3023

102 Berkeley Avenue,Hounslow,TW4 6LB

Certificate of lawfulness for the proposed erection of a rear roof extension with three roof windows to the front.

Lawful Development Certificate (Proposed) Hounslow
Yesterday REGISTERED PA/2026/3022

102 Berkeley Avenue,Hounslow,TW4 6LB

Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves.

Prior Approval Larger Home Extension Hounslow
23 Oct 2026 REGISTERED: Under Consultation PA/2026/3012

267 North Hyde Lane,Southall,UB2 5TE

Ground floor rear extension 4.00 metres deep, maximum height of 2.50 metres, 2.50 metres high to the eaves

Prior Approval Larger Home Extension Hounslow
23 Oct 2026 REGISTERED: Under Consultation P/2026/3006

10 Burlington Road, Isleworth, TW7 4LY

(GS885862604) Erection of a front porch after removal of front canopy, erection of a pitched roof to existing two storey side extension and conversio...

Householder Applications Hounslow
23 Oct 2026 REGISTERED: Under Assessment P/2026/3005

26 Sutton Road,Hounslow,TW5 0PF

Certificate of lawfulness for the proposed erection of a detached outbuilding in the rear garden and two side roof extensions.

Lawful Development Certificate (Proposed) Hounslow
23 Oct 2026 REGISTERED: Under Assessment P/2026/3004

56 Park Road,Chiswick,W4 3HH

Certificate of lawfulness for the proposed erection of a detached outbuilding in the rear garden.

Lawful Development Certificate (Proposed) Hounslow
22 Oct 2026 REGISTERED: Under Consultation P/2026/2729

171 North Hyde Lane, Southall, UB2 5SG

Formation of vehicular access to the existing hardstanding at the front of the house.

Householder Applications Hounslow
22 Oct 2026 REGISTERED: Under Consultation P/2026/2992

17 Quick Road,Chiswick,W4 2BU

Erection of a rear roof extension with three front roof windows and single storey side and rear extension.

Householder Applications Hounslow
22 Oct 2026 REGISTERED: Under Consultation PA/2026/3002

26 Hereford Road,Feltham,TW13 5BT

Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves. (Scheme 2)

Prior Approval Larger Home Extension Hounslow
22 Oct 2026 REGISTERED PA/2026/2996

26 Hereford Road,Feltham,TW13 5BT

Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves. (Scheme 1)

Prior Approval Larger Home Extension Hounslow
22 Oct 2026 REGISTERED: Under Consultation P/2026/2379

22A and B Ashbourne Grove, Chiswick, London, W4 2JH

Installation of replacement double glazed timber framed sash front and rear windows and a double glazed timber framed rear door and casement window to...

PF-Full Applications Hounslow
21 Oct 2026 REGISTERED: Under Consultation P/2026/2571

437 Ground Floor Flat, Chiswick High Road, Chiswick,, London,W4 4AU

Retrospective application for the erection of two single storey detached out building in the rear garden.

PF-Full Applications Hounslow
21 Oct 2026 REGISTERED: Under Consultation P/2026/2933

Hanworth Park Court, Hanworth Road, Feltham, TW13 5DG

Erection of a three storey extension on both sides of the existing apartment building comprising of five self contained flats with associated landscap...

PF-Full Applications Hounslow
21 Oct 2026 REGISTERED P/2026/2876

Ivybridge Estate, Summerwood Road, Isleworth, TW7 7LD

Certificate of lawfulness for the proposed installation of replacement cladding to the flats 2 to 120 (evens) Mogden Lane and flats 1 to 237, 241 to 2...

Lawful Development Certificate (Proposed) Hounslow
21 Oct 2026 REGISTERED P/2026/2983

148 Park Road,Hounslow,TW3 2HP

Erection of a single storey rear extension, installation of pvcu windows to the side to match existing and demolition of garage to the rear.

Householder Applications Hounslow
21 Oct 2026 REGISTERED P/2026/2980

1 Portland Crescent,Feltham,TW13 4RY

Certificate of lawfulness for the proposed erection of a single storey side extension.

Lawful Development Certificate (Proposed) Hounslow
21 Oct 2026 REGISTERED: Under Consultation P/2026/2595

10 Dartmouth Place,Chiswick,W4 2RH

Replacement of garage door.

Householder Applications Hounslow
21 Oct 2026 REGISTERED: Under Consultation P/2026/2780

38 North Hyde Lane,Heston,TW5 0EH

Erection of a first floor side extension.

Householder Applications Hounslow
20 Oct 2026 REGISTERED: Under Assessment P/2026/2928

94 Thornbury Road, Isleworth, TW7 4NR

Certificate of lawfulness for the proposed roof alterations comprising of new battens, underlay, re-roofing, leadwork and ridge tiles.

Lawful Development Certificate (Proposed) Hounslow
20 Oct 2026 REGISTERED: Under Consultation P/2026/2960

Blk 15a To 15c, Windmill Road, Brentford, TW8 0QD

Installation of a front lightwell grille. Alterations to the front garden. Relocation of existing cycle and refuse storage. Installation of a new roof...

PF-Full Applications Hounslow
20 Oct 2026 REGISTERED: Under Consultation P/2026/2885

7 Blossom Waye, Hounslow, TW5 9HB

Erection of a part single and part two storey side and rear extension and erection of a front porch extension.

Householder Applications Hounslow
19 Oct 2026 REGISTERED: Under Consultation P/2026/2559

2 Hexham Gardens, Isleworth, TW7 5JR

Installation of a vehicle crossover to the flat.

PF-Full Applications Hounslow
19 Oct 2026 REGISTERED: Under Consultation P/2026/2959

12 Maple Grove,Brentford,TW8 8NJ

Erection of a front porch extension.

Householder Applications Hounslow
19 Oct 2026 REGISTERED: Under Consultation P/2026/2958

7 Warfield Road,Feltham,TW14 8AD

Erection of a two storey side extension, single storey rear extension and part two storey rear extension and demolition of garage and outbuilding to t...

Householder Applications Hounslow
19 Oct 2026 REGISTERED: Under Consultation P/2026/2950

1 Lonsdale Road,Chiswick,W4 1ND

Erection of a single storey rear extension, installation of roof window to the front of the house and replacement of tiles to rear roof extension.

Householder Applications Hounslow
19 Oct 2026 REGISTERED: Under Consultation P/2026/2947

14 The Ridgeway,Acton,W3 8LL

Erection of a single storey ground rear infill extension and one roof window to existing roof and replacement of front door to the house.

Householder Applications Hounslow
19 Oct 2026 REGISTERED: Under Consultation PA/2026/2957

63 Dudley Road, Feltham, TW14 8EJ

Ground floor rear extension 6.00 metres deep, maximum height of 3.15 metres, 3.00 metres high to the eaves

Prior Approval Larger Home Extension Hounslow
19 Oct 2026 REGISTERED: Under Consultation P/2026/2952

17 Orchard Road,Brentford,TW8 0QX

Erection of a single storey rear infill extension.

Householder Applications Hounslow
19 Oct 2026 REGISTERED: Under Consultation PA/2026/2951

98 Vicarage Farm Road,Hounslow,TW5 0AE

Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.88 metres high to the eaves

Prior Approval Larger Home Extension Hounslow
16 Oct 2026 REGISTERED: Under Assessment P/2026/2789

318 Hanworth Road ,Hounslow, TW3 3SH

Change of use to a House in Multiple Occupation (HMO) and conversion of the garage into a habitable room.

PF-Full Applications Hounslow
16 Oct 2026 REGISTERED: Under Consultation P/2026/2940

31 Brackley Road,Chiswick,W4 2HW

Erection of a single storey rear extension

Householder Applications Hounslow
16 Oct 2026 REGISTERED: Under Consultation P/2026/2877

5 Vimy Close, Hounslow, TW4 5AF

Erection of single storey rear extension to the house

Householder Applications Hounslow
16 Oct 2026 REGISTERED: Under Consultation PA/2026/2943

112 Myrtle Road,Hounslow,TW3 1QD

Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.85 metres high to the eaves.

Prior Approval Larger Home Extension Hounslow
16 Oct 2026 REGISTERED: Under Consultation PA/2026/2939

157 Bath Road,Hounslow,TW3 3BU

Ground floor rear extension 6.00 metres deep, maximum height 3.27 metres, 3.00 metres high to the eaves.

Prior Approval Larger Home Extension Hounslow
16 Oct 2026 REGISTERED: Under Assessment P/2026/2938

58 Bassett Gardens,Isleworth,TW7 4QY

Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and two front roof windows.

Lawful Development Certificate (Proposed) Hounslow
16 Oct 2026 REGISTERED: Under Consultation PA/2026/2937

20 Lyncroft Gardens,Hounslow,TW3 2QX

Ground floor rear extension 5.00 metres deep, maximum height 2.90 metres, 2.90 metres high to the eaves.

Prior Approval Larger Home Extension Hounslow
16 Oct 2026 REGISTERED: Under Assessment P/2026/2936

32 Carrington Avenue,Hounslow,TW3 2LG

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

Lawful Development Certificate (Proposed) Hounslow
15 Oct 2026 REGISTERED: Under Consultation P/2026/2934

Flat Ground Floor, 62 Chiswick Lane, Chiswick, London, W4 2LA

Erection of a detached outbuilding in the rear garden following demolition of existing shed.

PF-Full Applications Hounslow
15 Oct 2026 REGISTERED: Under Consultation P/2026/2931

156 Heston Road,Hounslow,TW5 0QU

Erection of a part single storey rear extension and rear and side first floor wraparound extension and front porch extension.

Householder Applications Hounslow
14 Oct 2026 REGISTERED: Under Assessment P/2026/2371

438 Great West Road,Hounslow,TW5 0PD

Certificate of lawfulness for the proposed erection of two detached outbuilding's in the rear garden.

Lawful Development Certificate (Proposed) Hounslow
14 Oct 2026 REGISTERED: Under Assessment P/2026/2863

143 Brabazon Road, Hounslow, TW5 9LN

Certificate of Lawfulness for for the proposed erection of a rear roof extension with three front roof windows.

Lawful Use Certificate Hounslow
14 Oct 2026 REGISTERED: Under Consultation P/2026/2918

6 Tolson Road, Isleworth,TW7 7AE

Erection of a single storey side infill and rear extension with a roof lantern to the house. Following the demolition of the conservatory.

Householder Applications Hounslow
14 Oct 2026 REGISTERED: Under Consultation P/2026/2920

36 Albury Avenue,Isleworth,TW7 5HX

Erection of a two storey side extension, a single storey rear extension and a rear roof extension, including the installation of two front roof window...

Householder Applications Hounslow
13 Oct 2026 REGISTERED: Under Consultation P/2026/2882

Unit 6 Worton Hall Industrial Estate, Worton Road, Isleworth, TW7 6ER

Retrospective application for the installation of two stacked storage containers

PF-Full Applications Hounslow
13 Oct 2026 Approved 22 Oct P/2026/2915

1 Queenswood Avenue,Hounslow,TW3 4LG

Certificate of lawfulness for the proposed erection of a single storey rear extension, hip to gable conversion, rear roof extension with three front r...

Lawful Development Certificate (Proposed) Hounslow
13 Oct 2026 REGISTERED: Under Assessment P/2026/2911

10 Spencer Road,Isleworth,TW7 4BH

Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion with two front roof windows.

Lawful Development Certificate (Proposed) Hounslow
13 Oct 2026 REGISTERED: Under Consultation P/2026/2909

52 Worple Road,Isleworth,TW7 7AR

Erection of a rear roof extension with two front roof windows.

Householder Applications Hounslow
13 Oct 2026 REGISTERED: Under Consultation PA/2026/2914

1 Queenswood Avenue,Hounslow,TW3 4LG

Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves.

Prior Approval Larger Home Extension Hounslow
12 Oct 2026 REGISTERED: Under Consultation P/2026/2903

108 Elmer Gardens, Isleworth, TW7 6HA

Erection of a single storey rear extension with removal of side door of the house.

PF-Full Applications Hounslow
12 Oct 2026 REGISTERED: Under Consultation P/2026/2894

11 Elm Road,Feltham,TW14 8EP

Erection of a single storey rear and side extension.

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

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