House extensions in Camden

Camden received 1,472 householder applications in the last 12 months - about 28 a week. Rear extensions and dormers are the most common. Of the 986 decided so far, 923 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 346 applications
Yesterday REGISTERED 2026/4713/L

10 Rothwell Street London NW1 8YH

Internal and external alterations to the property including the erection of a single-storey rear extension and first floor rear extension. Replacement...

Listed Building Consent Camden
Yesterday REGISTERED 2026/4649/P

10 Rothwell Street London NW1 8YH

Internal and external alterations to the property including the erection of a single-storey rear extension and first floor rear extension. Replacement...

Householder Application Camden
Yesterday REGISTERED 2026/4633/P

319-323 West End Lane London NW6 1RN

Replacement of window on front elevation with on-demand grocery hatch.

Full Planning Permission Camden
Yesterday REGISTERED 2026/4519/P

12 Flat 1 Kidderpore Gardens London Camden NW3 7SR

Retention of hard landscaping to front of site and a replacement shed in the rear garden

Full Planning Permission Camden
Yesterday REGISTERED 2026/4488/P

80 and 82 Mansfield Road London NW3 2HU

Erection of a single storey infill extension and erection of garage/store to the rear ground floor of no. 80, and replacement shopfront to no. 82 in a...

Full Planning Permission Camden
23 Oct 2026 New application 2026/4700/P

Flat 1st Floor, 6 Hilltop Road London NW6 2PY

Installation of railings on rear first floor balcony (Retrospective).

Full Planning Permission Camden
23 Oct 2026 New application 2026/4687/P

51 Elsworthy Road London Camden NW3 3BS

Demolition of existing conservatory extension and erection of replacement single-storey rear extension with roof terrace above with associated alterat...

Householder Application Camden
23 Oct 2026 New application 2026/4684/P

66 Canfield Gardens London NW6 3ED

Replace single-glazed windows and doors on all elevations with double-glazed, and reposition rear door.

Householder Application Camden
23 Oct 2026 New application 2026/4630/P

102 and 102A Fortess Road London NW5 2HJ

Conversion of the existing building to form 4 self-contained flats, erection of a rear part single storey part double storey rear extension, removal o...

Full Planning Permission Camden
23 Oct 2026 New application 2026/4574/P

The Vine PH 86 Highgate Road London NW5 1PB

External refurbishment of front forecourt area, including new paving, replacement decking, raised sections of brick wall, black metal balustrading, tr...

Full Planning Permission Camden
23 Oct 2026 New application 2026/4499/P

Flat 5 11 Lindfield Gardens London NW3 6PX

Replacement of existing timber framed single glazed windows with timber framed double glazed windows.

Full Planning Permission Camden
22 Oct 2026 New application 2026/4634/P

59 Gloucester Crescent London NW1 7EG

Installation of a new door to the rear, erection of stud partitions in the basement and ground floor areas, removal of bitumen covering to the front s...

Householder Application Camden
22 Oct 2026 New application 2026/4506/P

56 Willes Road Kentish town London NW5 3DL

Replacement of existing timber front door to The Bamford single entrance door with solid timber core panels to match existing.

Full Planning Permission Camden
22 Oct 2026 New application 2026/4210/P

2 Beatty Street London NW1 7LN

Alterations at rear ground floor level, involving the installation of French doors within new opening and bricking up of existing door opening.

Householder Application Camden
22 Oct 2026 New application 2026/4125/P

Windsor House, Bagshot House and Swinley House London NW1

The replacement and renewal of existing roof coverings, installation of lead-clad to the side elevations, installation of new dormer windows, together...

Full Planning Permission Camden
22 Oct 2026 New application 2026/4038/P

14 Heath Street London NW3 6TE

Change of use of first and second floors from office use (Use Class E) to residential use (Use Class C3), including construction of a single-storey ro...

Full Planning Permission Camden
21 Oct 2026 New application 2026/4682/L

Frognal Rise House Lower Terrace London NW3 6RE

Demolition of existing garage and interlinking gallery and replacement with new garage and garden room with link, alterations to main house including ...

Listed Building Consent Camden
21 Oct 2026 New application 2026/4669/L

La Sainte Union Convent School Highgate Road London NW5 1RP

The erection of secure fencing and the formation of enclosed external garden areas within the grounds of the school.

Listed Building Consent Camden
21 Oct 2026 New application 2026/4668/L

Kimpton Fitzroy Hotel 1-8 Russell Square London WC1B 5BE

Works at roof level including extending the mansard roof upwards to form a raised parapet, installation of retractable new roof hatch to create access...

Listed Building Consent Camden
21 Oct 2026 New application 2026/4659/L

Frognal House 99 Frognal London NW3 6XR

Replacement of existing sashes with new slim double glazed sashes

Listed Building Consent Camden
21 Oct 2026 New application 2026/4653/P

79 Canfield Gardens London NW6 3EA

Erection of an enlarged rear extension to ground floor flat and replacement of timber sash windows, casement windows and french doors.

Full Planning Permission Camden
21 Oct 2026 New application 2026/4644/P

Frognal Rise House Lower Terrace London NW3 6RE

Demolition of existing garage and interlinking gallery and replacement with new garage and garden room with link, alterations to main house including ...

Householder Application Camden
21 Oct 2026 New application 2026/4541/P

18 Museum Street London WC1A 1JN

Replacement of entrance doors and change of window frame colour at ground floor level on the Museum Street Elevation.

Full Planning Permission Camden
21 Oct 2026 New application 2026/4384/P

La Sainte Union Convent School Highgate Road London NW5 1RP

The erection of secure fencing and the formation of enclosed external garden areas within the grounds of the school.

Full Planning Permission Camden
21 Oct 2026 New application 2026/4262/P

Kimpton Fitzroy Hotel 1-8 Russell Square London WC1B 5BE

Works at roof level including extending the mansard roof upwards to form a raised parapet, installation of retractable new roof hatch to create access...

Full Planning Permission Camden
21 Oct 2026 New application 2026/4097/P

Frognal House 99 Frognal London NW3 6XR

Replacement of existing sashes with new slim double glazed sashes

Full Planning Permission Camden
21 Oct 2026 New application 2026/2092/P

121 Torriano Avenue London Camden NW5 2RX

Replacement of the existing external doors with new double-glazed timber units designed to match the existing in appearance, proportions, and detailin...

Full Planning Permission Camden
20 Oct 2026 New application 2026/4639/L

Keats House 10 Keats Grove London NW3 2RR

Replacement roof finishes (slate/lead), installation of 2 roof access hatches, replacement of roof lanterns and repairs to laylights, raising part of ...

Listed Building Consent Camden
20 Oct 2026 New application 2026/4559/P

Keats House 10 Keats Grove London NW3 2RR

Replacement roof finishes (slate/lead), installation of 2 roof access hatches, replacement of roof lanterns and repairs to laylights, raising part of ...

Full Planning Permission Camden
20 Oct 2026 New application 2026/4477/P

2 Rousden Street London NW1 0SU

BOPS and M3 - 26-00379-HAPP - Replacement of 4 single-glazed windows with double-glazed windows.

Householder Application Camden
20 Oct 2026 New application 2026/4470/P

Flat Ground Floor 31 Priory Terrace London NW6 4DG

Erection of a single storey rear extension at upper ground floor level, re-location of the existing rear roof terrace to adjacent flat roof and instal...

Full Planning Permission Camden
20 Oct 2026 New application 2026/4397/P

21 Windmill Hill London NW3 6RX

Replacement of the existing side extension, replacement of existing windows, doors and gates, external shading, alterations to the existing roof cover...

Householder Application Camden
20 Oct 2026 New application 2026/4343/P

15 Crediton Hill London NW6 1HS

Erection of garage outbuilding and conversion to utility/storage space; erection of single storey rear extension and rear dormer windows; installation...

Householder Application Camden
20 Oct 2026 New application 2026/4270/P

Flat A, 89 Fordwych Road London NW2 3TL

Replacement windows and doors

Full Planning Permission Camden
19 Oct 2026 REGISTERED 2026/4576/P

22 West Hill Park London N6 6ND

Insertion of casement window to ground floor flank (north west) elevation.

Householder Application Camden
19 Oct 2026 REGISTERED 2026/4471/L

64 Acton Street London WC1X 9NB

Proposed repairs to windows including installation of secondary glazing.

Listed Building Consent Camden
19 Oct 2026 REGISTERED 2026/4461/L

Flat 1 3 Cambridge Gate London NW1 4JX

Replacement and alterations to the glazing of selected windows and associated works.

Listed Building Consent Camden
17 Oct 2026 REGISTERED 2026/4543/P

32 Flat C Lambolle Road London Camden NW3 4HR

Alterations to ground floor flat, vis:- replacement of window to rear with glazed doors, formation of entrance door and blocking up of kitchen door (b...

Full Planning Permission Camden
16 Oct 2026 REGISTERED 2026/4589/L

Flat B 26 Eton Avenue London NW3 3HL

Internal alterations, replacement of existing door and window to rear roof terrace with pair of french doors, and replacement of entrance door and lea...

Listed Building Consent Camden
16 Oct 2026 REGISTERED 2026/4433/P

57a-57c Petersham House Hatton Garden London EC1N 8JG

Erection of additional protective railing on roof level, creation of roof terrace and pergola and re-organisation of roof plant within designated plan...

Full Planning Permission Camden
16 Oct 2026 REGISTERED 2026/4406/P

Flat B 26 Eton Avenue London NW3 3HL

Replacement of existing door and window to rear roof terrace with pair of french doors, and replacement of entrance door and lead canopy to front elev...

Full Planning Permission Camden
16 Oct 2026 REGISTERED 2026/4183/P

14 Tobin Close London NW3 3DY

Erection of a single storey rear extension and replacement of first floor rear doors with single glazed door opening and replacement of garage doors a...

Householder Application Camden
15 Oct 2026 REGISTERED 2026/4569/L

5 Holly Mount London Camden NW3 6SG

Replacement of existing roof slates and lead flashings where these have deteriorated. The works also include lead capping of the coping stones to matc...

Listed Building Consent Camden
15 Oct 2026 REGISTERED 2026/4562/L

2-3 Charrington Street London NW1 1RS

Amalgamation of existing flats to form a small House in Multiple Occupation (Use Class C4), replacement of the lower ground floor rear door, installat...

Listed Building Consent Camden
15 Oct 2026 REGISTERED 2026/4546/P

61 Goldhurst Terrace London NW6 3HB

Conversion of three residential units into two self-contained residential units, including associated internal alterations, erection of a rear dormer ...

Full Planning Permission Camden
15 Oct 2026 REGISTERED 2026/4529/P

7A Ellerdale Road London NW3 6BA

Alterations to front courtyard elevation and rear elevation

Householder Application Camden
15 Oct 2026 New application 2026/4528/P

7A Ellerdale Road London NW3 6BA

Erection of a rear roof dormer extension.

Householder Application Camden
15 Oct 2026 New application 2026/4492/P

2-3 Charrington Street London NW1 1RS

Amalgamation of existing flats to form a small House in Multiple Occupation (Use Class C4), replacement of the lower ground floor rear door, installat...

Full Planning Permission Camden
15 Oct 2026 REGISTERED 2026/2366/P

5 Holly Mount London Camden NW3 6SG

Replacement of existing roof slates and lead flashings where these have deteriorated. The works also include lead capping of the coping stones to matc...

Householder Application Camden
14 Oct 2026 REGISTERED 2026/4473/P

Kentish Town Fire Station 20 Highgate Road London NW5 1NS

Replacement of external cladding, windows and doors.

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

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