House extensions in City of London

City of London received 63 householder applications in the last 12 months. All 34 decided so far were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

24 last 90 days
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Showing 24 of 24 applications
26/00881/LBC 19 Jun 2026 Under Consideration

47 Ludgate Hill London EC4M 7JZ

Internal works comprising the removal of the existing 'island' bar and installation of new bar along with new flooring in main bar area

Listed Building Consent City Of London 19 Jun 2026
26/00875/FULL 18 Jun 2026 Under Consideration

1 New Change London EC4M 9AF

Installation of 1no. external roller shutter to existing sliding doors.

Full Planning Permission City Of London 18 Jun 2026
26/00849/OBS 10 Jun 2026 Decided

38- 48 Southwark Bridge Road, London, Southwark

Consultation from the London Borough of Southwark on a planning application for the partial demolition, extension and change of use of existing buildi...

Observations from other Boroughs City Of London 10 Jun 2026
26/00804/LBC 3 Jun 2026 Under Consideration

71 Defoe House Barbican London EC2Y 8DN

Refurbishments, including alterations to the kitchen and non-structural partition wall. Making the internal doors full height.

Listed Building Consent City Of London 3 Jun 2026
26/00792/FULL 1 Jun 2026 Under Consideration

5 Lloyd's Avenue London EC3N 3AE

Change of use of the existing office and drinking establishment to provide contemporary tourist hotel and hostel accommodation (sui generis), includin...

Full Planning Permission City Of London 1 Jun 2026
26/00785/LBC 29 May 2026 Under Consideration

5 St Michael's Alley London EC3V 9DS

Internal alterations at basement level of Jamaica Wine House associated with refurbishment of customer bar areas and toilets.

Listed Building Consent City Of London 29 May 2026
26/00769/LBC 27 May 2026 Under Consideration

1 Lombard Street London EC3V 9AA

Internal alterations at basement and ground floor level in association with existing restaurant. Please see details listed in Heritage Statement

Listed Building Consent City Of London 27 May 2026
26/00773/FULL 27 May 2026 Under Consideration

90 Bartholomew Close London EC1A 7BN

Installation of replacement fall arrest system and counterweighted handrails

Full Planning Permission City Of London 27 May 2026
26/00748/FULMAJ 22 May 2026 Under Consideration

140 Aldersgate Street London EC1A 4HY

Extensions to the existing building, involving the partial demolition and construction at Levels 7 and 8 to provide additional office floorspace (Use ...

Full Major Application City Of London 22 May 2026
26/00746/LBC 21 May 2026 Under Consideration

Offices 4 Moorgate London EC2R 6DA

Internal refurbishment works to communal areas of existing office building at basement and ground levels and stair and lift cores, including removal a...

Listed Building Consent City Of London 21 May 2026
26/00747/LBC 21 May 2026 Under Consideration

6 Wallside Barbican London EC2Y 8BH

Proposed internal refurbishment and partial reconfiguration of five-storey townhouse at 6 Wallside, Barbican, including the removal of later non-origi...

Listed Building Consent City Of London 21 May 2026
26/00743/LBC 20 May 2026 Under Consideration

Temple Gardens Middle Temple Lane London EC4Y 9AY

Works to the party line between 2 and 3 Temple Gardens, to ensure adequate fire compartmentation between the two properties

Listed Building Consent City Of London 20 May 2026
26/00713/FULL 15 May 2026 Under Consideration

36 - 38 Leadenhall Street London EC3A 1AT

Replacement of existing glazing with new entrance door and associated glazing at ground level.

Full Planning Permission City Of London 15 May 2026
26/00640/FULL 30 Apr 2026 Under Consideration

Temple Chambers 3 - 7 Temple Avenue London EC4Y 0HP

Creation of rear terraces on existing flat roofs at first floor level.

Full Planning Permission City Of London 30 Apr 2026
26/00621/LBC 28 Apr 2026 Under Consideration

89 Speed House Barbican London EC2Y 8AU

Internal alterations to a fifth-floor flat within Speed House, including the partial removal of the existing non-structural outer kitchen partition wa...

Listed Building Consent City Of London 28 Apr 2026
26/00549/FULL 17 Apr 2026 Under Consideration

33 Old Broad Street London EC2N 1HW

External alterations to ground floor elevation comprising, (i) installation of 2no. revolving doors, (ii) installation of 1no. automated single leaf s...

Full Planning Permission City Of London 17 Apr 2026
26/00548/FULL 17 Apr 2026 Decided

30 - 32 Fleet Street London EC4Y 1AA

Removal of existing window, creation of new doorway, and installation of a new timber door.

Full Planning Permission City Of London 17 Apr 2026
26/00546/FULL 17 Apr 2026 Decided

30 - 32 Fleet Street London EC4Y 1AA

Removal of existing window, creation of new doorway, and installation of a new timber door.

Full Planning Permission City Of London 17 Apr 2026
26/00547/LBC 17 Apr 2026 Decided

30 - 32 Fleet Street London EC4Y 1AA

Alterations at ground floor level comprising, (i) removal of existing window, (ii) creation of new doorway, (iii) installation of a new timber door, a...

Listed Building Consent City Of London 17 Apr 2026
26/00531/FULL 15 Apr 2026 Under Consideration

67 Lombard Street London EC3V 9LJ

Works comprising: (i) partial removal of louvres on levels 6, 7 and 8. (ii) consolidation of the rooftop plant. (iii) introduction of access to level ...

Full Planning Permission City Of London 15 Apr 2026
26/00518/FULL 13 Apr 2026 Under Consideration

200 Aldersgate Street London EC1A 4HD

Works to create provision of a terrace on the second floor and associated development.

Full Planning Permission City Of London 13 Apr 2026
26/00519/FULL 13 Apr 2026 Under Consideration

200 Aldersgate Street London EC1A 4HD

Replacement of two windows with louvres at second floor-level.

Full Planning Permission City Of London 13 Apr 2026
26/00466/FULL 31 Mar 2026 Under Consideration

67 Lombard Street London EC3V 9LJ

Partial removal of existing louvres and brise soleil system at levels 6, 7, and 8, and alterations at roof level including (i) removal of building mai...

Full Planning Permission City Of London 31 Mar 2026
26/00434/LBC 25 Mar 2026 Decided

91 Speed House Barbican London EC2Y 8AU

Interior refurbishment including renovation of kitchen, bathroom, bedroom wardrobes; conversion of guest wc to utility room; replacement of doors and ...

Listed Building Consent City Of London 25 Mar 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 City of London?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by City of London. You can also narrow the alert to a postcode, street, or drawn area.

Other application types in City of London

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