House extensions in Greenwich

Greenwich received 1,162 householder applications in the last 12 months - about 22 a week. Rear extensions and dormers are the most common. Of the 922 decided so far, 709 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 268 applications
20 Oct 2026 Registered 26/3015/CP

51 Reidhaven Road, London, SE18 1BN

Certifcate of Lawfulness (Proposed) is sought for rear dormer and outrigger dormer extension, with front roof lights.

Cert. of Lawful Use/Dev - PROPOSED Greenwich
20 Oct 2026 Registered 26/3023/HD

53 Congreve Road, London, SE9 1LW

Replacement of PVCu windows with applied astragal bars to front and back of property

Householders Greenwich
20 Oct 2026 Registered 26/2824/HD

80 Waterside Close, London, SE28 0GS

Construction of a single storey rear extension.

Householders Greenwich
20 Oct 2026 Registered 26/2689/HD

134 Old Woolwich Road, London, SE10 9PR

Replacement of front boundary timber fence with a black metal railing fence, including the boundary section fence between 134 and 136 Old Woolwich Roa...

Householders Greenwich
19 Oct 2026 Registered 26/3012/PN1

71 Kingsholm Gardens, Eltham, London, SE9 6LB

Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 6.00m, for wh...

Prior Notification Greenwich
19 Oct 2026 Registered 26/2771/F

Flat 11, Maze Hill Lodge, Park Vista, Greenwich, London, SE10 9LY

Replacement of existing windows with 'like-for-like' double glazed units.

Full Planning Permission Greenwich
16 Oct 2026 Registered 26/2993/HD

29 Wendover Road, Eltham, London, SE9 6PF

Construction of a two-storey side extension and a part single-storey, part two-storey rear extension.

Householders Greenwich
16 Oct 2026 Registered 26/2850/HD

5 Sherington Road, Charlton, London, SE7 7JW

Construction of a single storey rear extension, together with a rear dormer, three front rooflights and associated works.

Householders Greenwich
15 Oct 2026 Registered 26/2975/CP

Block R and S New Haddo Estate, Claremont Street, London, SE10 9SF

Certificate of Lawfulness (Proposed) is sought for the replacement of existing external brickwork, render and cladding materials with like-for-like no...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
15 Oct 2026 Registered 26/2518/HD

16 West Grove, Greenwich, London, SE10 8QT

Proposed installation of 1 No. aluminium framed fixed glazed window in the Loft Dormer gable elevation.

Householders Greenwich
15 Oct 2026 Registered 26/2980/PN1

4 Shrewsbury Lane, Plumstead, London, SE18 3JF

Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 4.00m, for wh...

Prior Notification Greenwich
15 Oct 2026 Registered 26/2660/F

24 High Point, Eltham, London, SE9 3NZ

Construction of an outbuilding to the rear garden.

Full Planning Permission Greenwich
14 Oct 2026 Registered 26/2929/HD

74 Crown Woods Way, Eltham, London, SE9 2NN

Loft conversion incorporating a rear dormer. Construction of a part 1 / part 2 side extension incorporating the installation of rooflights, and a porc...

Householders Greenwich
14 Oct 2026 Registered 26/2911/HD

67 Kingsley Wood Drive, Eltham, London, SE9 3BJ

Demolition of the existing single-storey side extension and construction of a replacement with piled foundations and associated works.

Householders Greenwich
14 Oct 2026 Registered 26/2966/HD

31 Caradoc Street, Greenwich, London, SE10 9AG

Replace existing front main door with a new purpose made timber front door.

Householders Greenwich
14 Oct 2026 Registered 26/2961/CP

6 Macoma Terrace, Plumstead, London, SE18 2QN

Certificate of Lawfulness (Proposed) is sought for construction of new loft extension to rear of existing house. No changes to existing access Refer t...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
13 Oct 2026 Registered 26/2956/PN1

112 Broad Walk, Kidbrooke, London, SE3 8ND

Prior Approval for the construction of two single storey rear extensions which will extend beyond the rear wall of the original dwelling by 6.00m & 4....

Prior Notification Greenwich
13 Oct 2026 Decided 26/2974/K

12 Highcombe Close, Mottingham, London, SE9 4QJ

Single storey side/rear extension with addition of side gate/access and hip to gable loft conversion with front rooflights and rear dormer and removal...

Consultation by other Borough\LDDC Greenwich
13 Oct 2026 Registered 26/2960/CP

352 Shooters Hill Road, London, SE18 4LS

Certificate of Lawfulness (Proposed) is sought for loft conversion for two no of bed rooms, storage and a bathroom.

Cert. of Lawful Use/Dev - PROPOSED Greenwich
13 Oct 2026 Registered 26/2955/PN1

83 Brookdene Road, Plumstead, London, SE18 1EH

Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 6.00m, for wh...

Prior Notification Greenwich
13 Oct 2026 Registered 26/2953/CP

83 Brookdene Road, Plumstead, London, SE18 1EH

Certificate of Lawfulness (Proposed) is sought for application for a Lawful Development Certificate for proposed loft conversion comprising hip to gab...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
13 Oct 2026 Registered 26/2952/PN1

191 Broad Walk, London, SE3 8NG

Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 6.00m, for wh...

Prior Notification Greenwich
13 Oct 2026 Registered 26/2951/CP

191 Broad Walk, London, SE3 8NG

Certificate of Lawfulness (Proposed) is sought for loft conversion with side dormer.

Cert. of Lawful Use/Dev - PROPOSED Greenwich
13 Oct 2026 Registered 26/2950/HD

53 Woodlands Park Road, London, SE10 9XE

Construction of single storey rear/side extensions with associated internal alterations

Householders Greenwich
13 Oct 2026 Registered 26/2849/HD

2 Chaundrye Close, Eltham, London, SE9 5QB

Demolition of the existing rear conservatory and single-storey element and construction of a full length rear extension, incorporating rooflights, tog...

Householders Greenwich
12 Oct 2026 Registered 26/2944/PN1

47 Woodhurst Road, Abbey Wood, London, SE2 0HF

Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 4.00m, for wh...

Prior Notification Greenwich
12 Oct 2026 Registered 26/2792/HD

61 Bostall Hill, London, SE2 0QX

Conversion of the existing detached garage to habitable accommodation for use as an annexe ancillary to the main dwelling, including associated extern...

Householders Greenwich
12 Oct 2026 Registered 26/2600/HD

21 Mereworth Drive, Plumstead, London, SE18 3ED

Replacement of existing windows with like-for-like white uPVC windows and replacement of the existing garage door with a similar timber door incorpora...

Householders Greenwich
12 Oct 2026 Registered 26/2943/PN1

407 Westhorne Avenue, Eltham, London, SE12 9AB

Prior Approval for the construction of a single-storey rear extension which will extend beyond the rear wall of the original dwelling by 6.00m, for wh...

Prior Notification Greenwich
12 Oct 2026 Registered 26/2927/CP

59a Horn Park Lane, Eltham, London, SE12 8AP

Certificate of Lawfulness (Proposed) is sought for loft conversion involving a hip-to-gable roof alteration, construction of a rear roof dormer extens...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
9 Oct 2026 Registered 26/2923/HD

19 Crouch Croft, Eltham, London, SE9 3HX

Garage conversion into a habitable space. Construction of a single-storey side / rear wraparound extension incorporating the installation of rooflight...

Householders Greenwich
9 Oct 2026 Registered 26/2264/F

83 Shrewsbury Lane, Plumstead, London, SE18 3JW

The replacement of all existing windows with new double glazed PVCu casements, the existing front entrance timber door with a new composite door, the ...

Full Planning Permission Greenwich
8 Oct 2026 Registered 26/2841/HD

62 Brooklands Park, Blackheath, London, SE3 9AJ

Replacement of the existing single-storey rear extension, conversion of the loft incorporating a rear dormer and rooflights to the front and rear roof...

Householders Greenwich
8 Oct 2026 Registered 26/2643/F

Charlton Rugby Club, 60a Broad Walk, London, SE3 8NB

Single storey extension to existing clubhouse and internal alterations to reconfigure changing room layouts; associated demolition of existing Nissan ...

Full Planning Permission Greenwich
8 Oct 2026 Registered 26/2613/F

5 & 7 Hoskins Street, Greenwich, London, SE10 9NZ

Demolition of w.c. outhouses and construction of single storey rear extensions to Nos.5 and 7 Hoskins Street.

Full Planning Permission Greenwich
8 Oct 2026 Registered 26/2899/CP

34 The Heights, Charlton, London, SE7 8JH

Certificate of Lawfulness (Proposed) is sought for construct single storey side extension.

Cert. of Lawful Use/Dev - PROPOSED Greenwich
8 Oct 2026 Registered 26/2898/CP

253 Kingsground, Eltham, London, SE9 5ET

Certificate of Lawfulness (Proposed) is sought for erection of a loft conversion with rear dormer extension and a single-storey rear extension, includ...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
8 Oct 2026 Registered 26/2896/CP

11 Woodbrook Road, Plumstead, London, SE2 0PE

Certificate of Lawfulness (Proposed) is sought for loft conversion with rear dormer, two storey rear extyension, single storeu side and rear extension...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
8 Oct 2026 Registered 26/2894/CP

42 Dutton Street, Greenwich, London, SE10 8TB

Certificate of Lawfulness (Proposed) is sought for the erection of a single-storey rear extension with associated internal alterations, and the replac...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
8 Oct 2026 Registered 26/2856/HD

1 Cheriton Drive, Plumstead, London, SE18 2RE

Construction of a first-floor side extension incorporating the installation of side-elevation windows and a rooflight with associated works.

Householders Greenwich
7 Oct 2026 Registered 26/2883/CP

Block D, E and N New Haddo Estate, Tarves Way, London, SE10 9JG

Certificate of Lawfulness (Proposed) is sought for removal of previously installed combustible materials, in order that they can be replaced with non-...

Cert. of Lawful Use/Dev - PROPOSED Greenwich
7 Oct 2026 Registered 26/2396/F

236 Plumstead High Street, London, SE18 1JL

Single storey rear extension and extension into the loft of the existing building with associated three rear dormer windows to provide a change of use...

Full Planning Permission Greenwich
7 Oct 2026 Registered 26/2888/PN5

7 Chequers Parade, London, SE9 1DD

Prior Approval is sought for construction of an additional storey at second floor level above no 7 Chequers Parade to provide 1no self-contained flat.

Prior Approval, Part 20 Greenwich
7 Oct 2026 Registered 26/2688/HD

272 Court Road, London, SE9 4TY

Demolition of the garage and existing side extension to be replaced by a single storey rear and side wrap around extension with internal alteration.

Householders Greenwich
7 Oct 2026 Registered 26/2886/CP

1 Swingate Lane, Plumstead, London, SE18 2DA

Certificate of Lawfulness (Proposed) is sought for proposed single storey rear extension 4M deep.

Cert. of Lawful Use/Dev - PROPOSED Greenwich
7 Oct 2026 Registered 26/2751/HD

6 McCall Crescent, London, SE7 8HS

Construction of a single storey rear extension and a partial first floor extension.

Householders Greenwich
7 Oct 2026 Registered 26/2880/PN1

573 Westhorne Avenue, Eltham, London, SE9 6DN

Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 6.00m, for wh...

Prior Notification Greenwich
7 Oct 2026 Registered 26/2802/HD

28 Mervyn Avenue, Eltham, London, SE9 3PR

Loft conversion incorporating alterations to the roof including raising the roof ridge to the main roof and front gable, and the installation of roofl...

Householders Greenwich
7 Oct 2026 Registered 26/2376/HD

34 Miriam Road, Plumstead, London, SE18 1RE

The replacement of the existing windows with new double glazed PVCu units, front entrance door with a new composite set and rear door with a new PVCu ...

Householders Greenwich
6 Oct 2026 Registered 26/2879/L

Flat 37, Roan Court, 60 Devonshire Drive, London, SE10 8LQ

Internal alteration to create an open plan kitchen living space and a separate, including the creation of a new separate toilet space (works are limit...

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

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