House extensions in Bexley

Bexley received 416 householder applications in the last 12 months - about 8 a week. Rear extensions and dormers are the most common. Of the 230 decided so far, 210 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

255 last 90 days
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73 last 30 days
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25 last 14 days

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Showing 50 of 255 applications
26/01335/FUL 8 Jul 2026 With Case Officer

31 Farnham Road Welling Kent DA16 1LG

Erection of a detached single storey outbuilding.

Bexley 8 Jul 2026
26/01317/GPDE 7 Jul 2026 With Case Officer

143 Longmead Drive Sidcup Kent DA14 4NY

The erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6.00 metres, for which the maximum he...

Bexley 7 Jul 2026
26/01320/FUL 7 Jul 2026 With Case Officer

19 Queenswood Road Sidcup Kent DA15 8QP

Erection of a single storey rear extension.

Bexley 7 Jul 2026
26/01319/FUL 7 Jul 2026 With Case Officer

18 Crescent Road Sidcup Kent DA15 7HN

Erection of a single storey rear and side extension and conversion of roof space involving alterations to existing roofline and 3 rear dormer extensio...

Bexley 7 Jul 2026
26/01326/LDCP 7 Jul 2026 With Case Officer

182 Parkside Avenue Bexleyheath Kent DA7 6NW

Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline, a rear dormer extension with ro...

Bexley 7 Jul 2026
26/01325/FUL 7 Jul 2026 With Case Officer

45 Regent Square Belvedere Kent DA17 6EP

Conversion of lower ground floor garage to habitable room and a first floor rear extension.

Bexley 7 Jul 2026
26/01323/FUL 7 Jul 2026 With Case Officer

52 Priestlands Park Road Sidcup Kent DA15 7HJ

Conversion of roof space involving alterations to existing roofline, including a hip to gable enlargement, a rear dormer extension and rooflights to f...

Bexley 7 Jul 2026
23/01077/FUL01 7 Jul 2026 With Case Officer

97-99 Welling High Street Welling Kent DA16 1TY

Application to approve details of condition 3 (Materials) pursuant to application 23/01077/FUL for Erection of a second floor extension incorporating ...

Bexley 7 Jul 2026
26/01302/LDCP 6 Jul 2026 With Case Officer

41 Beverley Road Bexleyheath Kent DA7 6JQ

Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline, including a hip to gable enlarg...

Lawful Development Certificate-Proposed Bexley 6 Jul 2026
26/01311/FUL 6 Jul 2026 With Case Officer

67 Woolbrook Road Crayford Dartford Kent DA1 3RB

Erection of part one/part two storey extension and conversion of garage to habitable room.

Detailed Planning Application Bexley 6 Jul 2026
26/01308/FUL 6 Jul 2026 With Case Officer

60 Faraday Avenue Sidcup Kent DA14 4JF

Erection of single storey rear extension.

Bexley 6 Jul 2026
26/01312/FUL 6 Jul 2026 With Case Officer

26 Douglas Road Welling Kent DA16 1QZ

Erection of a single storey rear extension.

Bexley 6 Jul 2026
26/01304/FUL 6 Jul 2026 With Case Officer

26 Matfield Road Belvedere Kent DA17 6LT

Conversion of roof space involving alterations to existing roofline, including a hip to gable enlargement, a rear dormer extension with Juliet balcony...

Bexley 6 Jul 2026
26/01300/FUL 6 Jul 2026 With Case Officer

Watling Halt Robin Road Belvedere Kent DA17 6DN

Single storey front/rear extension and erection of a first floor extension with a detached single storey rear outbuilding for use as ancillary to main...

Bexley 6 Jul 2026
26/01313/FUL 6 Jul 2026 With Case Officer

21 Stevedale Road Welling Kent DA16 1ND

Erection of a single storey side/rear extension and removal of chimney breasts.

Bexley 6 Jul 2026
26/01310/LDCP 6 Jul 2026 With Case Officer

331 Brook Street Belvedere Kent DA17 6NH

Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline, including a hip to gable enlarg...

Bexley 6 Jul 2026
26/01299/FUL 6 Jul 2026 With Case Officer

78 Hill Crescent Bexley Kent DA5 2DB

Erection of a detached single storey outbuilding in rear garden.

Bexley 6 Jul 2026
26/01293/LDCP 3 Jul 2026 With Case Officer

47 Chestnut Drive Bexleyheath Kent DA7 4EW

Lawful Development Certificate (Proposed) for conversion of garage to habitable room involving alterations to front elevation.

Lawful Development Certificate-Proposed Bexley 3 Jul 2026
26/01276/FUL 30 Jun 2026 With Case Officer

69 Erith Road Belvedere Kent DA17 6HF

Conversion of roof space involving alterations to existing roofline, including a rear/side dormer extensions and two rooflights to side roofslope.

Detailed Planning Application Bexley 30 Jun 2026
26/01269/LDCP 30 Jun 2026 With Case Officer

30 Newlyn Road Welling Kent DA16 3LH

Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline, a rear dormer extension and roo...

Lawful Development Certificate-Proposed Bexley 30 Jun 2026
26/01272/FUL 30 Jun 2026 With Case Officer

7 Alfriston Close Crayford Dartford Kent DA1 3RU

Conversion of garage to a habitable room.

Detailed Planning Application Bexley 30 Jun 2026
26/01274/FUL 30 Jun 2026 With Case Officer

20 Davenport Road Sidcup Kent DA14 4PW

Erection of a part one, part two storey front / side and rear extension.

Detailed Planning Application Bexley 30 Jun 2026
26/01273/FUL 30 Jun 2026 With Case Officer

2 Bradbourne Road Bexley Kent DA5 1NR

Application under Section 73 of the Town and Country Planning Act 1990 to vary condition 2 (Approved Drawings) to increase the front porch and and to ...

Detailed Planning Application Bexley 30 Jun 2026
26/01264/FUL 29 Jun 2026 With Case Officer

38 Hurst Road Sidcup Kent DA15 9AA

Erection of a first floor side extension.

Detailed Planning Application Bexley 29 Jun 2026
26/01255/FUL 26 Jun 2026 With Case Officer

42 Brooklands Avenue Sidcup Kent DA15 7PJ

Conversion of garage to habitable room and alterations to front and rear fenestration.

Detailed Planning Application Bexley 26 Jun 2026
26/01257/FUL 26 Jun 2026 With Case Officer

48 Falconwood Avenue Welling Kent DA16 2SH

Erection of a single storey rear extension.

Detailed Planning Application Bexley 26 Jun 2026
26/01268/FUL 26 Jun 2026 With Case Officer

179 Longlands Road Sidcup Kent DA15 7LB

Erection of single storey side extension.

Detailed Planning Application Bexley 26 Jun 2026
26/01254/LDCP 26 Jun 2026 With Case Officer

31 Blackfen Road Sidcup Kent DA15 8QD

Lawful Development Certificate (Proposed) for the erection of a single storey detached outbuilding to rear garden.

Lawful Development Certificate-Proposed Bexley 26 Jun 2026
26/01252/GPDE 25 Jun 2026 With Case Officer

121 Erith Road Belvedere Kent DA17 6HS

The erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6.00 metres, for which the maximum he...

General Permitted Development-Extensions Bexley 25 Jun 2026
26/01251/LDCP 25 Jun 2026 With Case Officer

28 Sheridan Road Belvedere Kent DA17 5AR

Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline, including a rear dormer extensi...

Lawful Development Certificate-Proposed Bexley 25 Jun 2026
26/01242/FUL 25 Jun 2026 With Case Officer

2A Foots Cray Lane Sidcup Kent DA14 4NR

Erection of a part one/part two storey side /rear extension, a single storey front extension, conversion of roof space involving alterations to existi...

Detailed Planning Application Bexley 25 Jun 2026
26/01248/LDCP 25 Jun 2026 With Case Officer

152 Howard Avenue Bexley Kent DA5 3AX

Lawful Development Certificate (Proposed) for the conversion of roof space including rear dormer extension and rooflights to front roof slope.

Lawful Development Certificate-Proposed Bexley 25 Jun 2026
26/01240/FUL 24 Jun 2026 With Case Officer

1 Rutland Close Bexley Kent DA5 3HY

Erection of a single storey rear extension following demolition of existing lean-to.

Detailed Planning Application Bexley 24 Jun 2026
26/01234/FUL 24 Jun 2026 With Case Officer

127 Radnor Avenue Welling Kent DA16 2DA

Erection of a part one/part two storey rear extension.

Detailed Planning Application Bexley 24 Jun 2026
26/01233/LDCP 24 Jun 2026 With Case Officer

53 South Gipsy Road Welling Kent DA16 1HP

Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline, including a rear and side dorme...

Lawful Development Certificate-Proposed Bexley 24 Jun 2026
26/01237/LDCP 24 Jun 2026 With Case Officer

14 Chieveley Road Bexleyheath Kent DA7 6AH

Lawful Development Certificate (Proposed) for the erection of a single storey side extension following demolition of existing garage and conversion of...

Lawful Development Certificate-Proposed Bexley 24 Jun 2026
26/01238/FUL 24 Jun 2026 With Case Officer

Blendon Post Office 141 Blendon Road Bexley Kent DA5 1BT

Change of Use from Retail (Class E) to Takeaway Shop (Class Sui Generis) with installation of a rear extraction flue, alterations to shop front and fe...

Detailed Planning Application Bexley 24 Jun 2026
26/01231/GPDE 23 Jun 2026 With Case Officer

31 Kingswood Avenue Belvedere Kent DA17 5HN

The erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 5.00 metres, for which the maximum he...

General Permitted Development-Extensions Bexley 23 Jun 2026
26/01229/FUL 23 Jun 2026 With Case Officer

81 Radnor Avenue Welling Kent DA16 2DA

Erection of a single storey side / rear extension following demolition of existing garage.

Detailed Planning Application Bexley 23 Jun 2026
26/01224/FUL 22 Jun 2026 With Case Officer

46 Barnehurst Avenue Bexleyheath Kent DA7 6QB

Erection of a single storey rear shed (retrospective)

Detailed Planning Application Bexley 22 Jun 2026
26/01213/FUL 22 Jun 2026 With Case Officer

141 King Harolds Way Bexleyheath Kent DA7 5RB

Erection of single storey rear extension.

Detailed Planning Application Bexley 22 Jun 2026
26/01223/FUL 22 Jun 2026 With Case Officer

41 Canterbury Avenue Sidcup Kent DA15 9AY

Erection of a part one/part two storey side and rear extension.

Detailed Planning Application Bexley 22 Jun 2026
26/01222/FUL 22 Jun 2026 With Case Officer

99 Blackfen Road Sidcup Kent DA15 8PZ

Erection of single storey detached outbuilding to provide annexe accommodation.

Detailed Planning Application Bexley 22 Jun 2026
26/01221/FUL 22 Jun 2026 With Case Officer

214 Bellegrove Road Welling Kent DA16 3RT

Erection of detached single storey outbuilding to rear following demolition of existing outbuilding.

Detailed Planning Application Bexley 22 Jun 2026
26/01220/FUL 22 Jun 2026 With Case Officer

57 Camden Road Bexley Kent DA5 3NZ

Erection of single storey side / rear extension following demolition of existing structures.

Detailed Planning Application Bexley 22 Jun 2026
26/01227/GPDE 22 Jun 2026 With Case Officer

32 Grasmere Road Bexleyheath Kent DA7 6PT

The erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 3.50 metres, for which the maximum he...

General Permitted Development-Extensions Bexley 22 Jun 2026
26/01211/GPDE 22 Jun 2026 With Case Officer

41 Parkside Avenue Bexleyheath Kent DA7 6NQ

The erection of a single storey rear extension which in total (inc previous enlargements) would extend beyond the rear wall of the original house by 5...

General Permitted Development-Extensions Bexley 22 Jun 2026
26/01205/LDCP 19 Jun 2026 With Case Officer

31 Farnham Road Welling Kent DA16 1LG

Lawful Development Certificate (Proposed) for the conversion of garage to habitable room.

Lawful Development Certificate-Proposed Bexley 19 Jun 2026
26/01202/FUL 19 Jun 2026 With Case Officer

20 Parsonage Manorway Belvedere Kent DA17 6LL

Conversion of existing garage into habitable space.

Detailed Planning Application Bexley 19 Jun 2026
26/01199/LDCP 19 Jun 2026 With Case Officer

17 Oaklands Avenue Sidcup Kent DA15 8NF

Lawful Development Certificate (Proposed) for the erection of single storey rear extension.

Lawful Development Certificate-Proposed Bexley 19 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 Bexley?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Bexley. You can also narrow the alert to a postcode, street, or drawn area.

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