House extensions in City of London

City of London received 183 householder applications in the last 12 months - about 4 a week. All 122 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.

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Showing 48 of 48 applications
20 Oct 2026 Under Consideration 26/01480/LBC

Poultry Market East Poultry Avenue London EC1A 9LH

Temporary works to install three painted internal timber doors and proposed entrance to be covered with timber rainscreen panels, roller shutter and a...

Listed Building Consent City Of London
20 Oct 2026 Under Consideration 26/01485/LBC

609 Seddon House Barbican London EC2Y 8BX

Internal alterations comprising the demolition of bedroom, bathroom and kitchen stud walls and doors; reconstruction of walls in a partially reconfigu...

Listed Building Consent City Of London
13 Oct 2026 Under Consideration 26/01403/LBC

The Old Doctor Butlers Head Public House 2 Mason's Avenue London EC2V 5BT

Refurbishment and alterations including repairs and redecoration to the external frontage, installation of a new awning and associated parapet and pla...

Listed Building Consent City Of London
13 Oct 2026 Under Consideration 26/01402/FULL

The Old Doctor Butlers Head Public House 2 Mason's Avenue London EC2V 5BT

Alterations to the external frontage including installation of glazing to door, installation of new awning and parapet and planting.

Full Planning Permission City Of London
7 Oct 2026 Under Consideration 26/01340/LBC

65 Basinghall Street London EC2V 5DZ

The proposals comprise a new roof access hatch, ladder access and fall protection systems, localised roof repairs, raising the existing domed roofligh...

Listed Building Consent City Of London
7 Oct 2026 Under Consideration 26/01339/FULL

65 Basinghall Street London EC2V 5DZ

Installation of new roof access hatch, ladder access and fall protection systems, localised roof repairs, and raising the existing domed rooflight ker...

Full Planning Permission City Of London
5 Oct 2026 Under Consideration 26/01338/FULL

6 Bevis Marks London EC3A 7BA

Alterations at roof level, including: (i) erection of new sixteen-floor open-sided pavilions comprising toilet facilities, with associated hard and so...

Full Planning Permission City Of London
1 Oct 2026 Under Consideration 26/01384/LBC

Blake Tower 2 Fann Street London EC2Y 8AF

Installation of fire-rated glazing and partitions to the first and second floor winter gardens/external staircase.

Listed Building Consent City Of London
1 Oct 2026 Under Consideration 26/01383/FULL

Blake Tower 2 Fann Street London EC2Y 8AF

Installation of fire-rated glazing and partitions to the first and second floor winter gardens/external staircase.

Full Planning Permission City Of London
30 Sept 2026 Under Consideration 26/01367/LBC

10 Devonshire Square London EC2M 4YP

Internal and external alterations associated with the refurbishment of Building 10, including the reconfiguration of the ground floor reception and of...

Listed Building Consent City Of London
30 Sept 2026 Under Consideration 26/01366/FULL

10 Devonshire Square London EC2M 4YP

Internal and external alterations associated with the refurbishment of Building 10, including the reconfiguration of the ground floor reception and of...

Full Planning Permission City Of London
30 Sept 2026 Under Consideration 26/01260/FULL

Retail Unit 7A 1 Paternoster Square London EC4M 7DX

Alterations to shopfront comprising the replacement of 1no. set of existing entrance doors, the installation of 1no. new doorway, and associated alter...

Full Planning Permission City Of London
29 Sept 2026 Under Consideration 26/01287/FULL

Equitable House 47 King William Street London EC4R 9AF

Alterations and extension to existing building, including alterations to the principal entrance comprising the installation of a new entrance door, gl...

Full Planning Permission City Of London
24 Sept 2026 Under Consideration 26/01254/FULL

Glade House 52 - 54 Carter Lane London EC4V 5EA

Replacement of the existing roof plant in poor repair; replacement of the roof plant enclosure within the existing footprint; and provision of a roof ...

Full Planning Permission City Of London
18 Sept 2026 Under Consideration 26/01310/FULL

8th Floor 155 Bishopsgate London EC2M 3TQ

Improvements to existing 8th floor roof terrace including the installation of 7no. aluminium pergolas.

Full Planning Permission City Of London
18 Sept 2026 Under Consideration 26/01303/FULL

8th Floor 155 Bishopsgate London EC2M 3TQ

Installation of 1 louvre panel to 8th floor elevation.

Full Planning Permission City Of London
18 Sept 2026 Under Consideration 26/01304/FULL

25 Gresham Street London EC2V 7HN

Refurbishment works to the ground floor entrances on Staining Lane and Noble Street.

Full Planning Permission City Of London
18 Sept 2026 Under Consideration 26/01306/FULL

City of London School 107 Queen Victoria Street London EC4V 3AL

Installation of an external platform lift with associated works.

Full Planning Permission City Of London
14 Sept 2026 Under Consideration 26/01273/LBC

110 Defoe House Barbican London EC2Y 8ND

Internal alterations comprising the replacement of the kitchen and removal of the kitchen entrance pocket door.

Listed Building Consent City Of London
8 Sept 2026 Under Consideration 26/01257/FULL

Juxon House 100 St Paul's Churchyard London EC4M 8BU

Alterations to existing roof terrace including, infill of void, new balustrade, planting, seating and lighting.

Full Planning Permission City Of London
3 Sept 2026 Under Consideration 26/01174/LBC

Central Criminal Court Old Bailey London EC4M 7EH

Refurbishment of existing WCs on the fourth floor, and introduction of additional accessible/ unisex facilities.

Listed Building Consent City Of London
27 Aug 2026 Approved 20 Oct 26/01222/LBC

Rising Sun Public House 61 Carter Lane London EC4V 5DY

Installation of 2no. eyebolt fixings to northern elevation to hold catenary wires to facilitate festive lighting and decoration displays

Listed Building Consent City Of London
26 Aug 2026 Under Consideration 26/01212/LBC

St Mary Abchurch House 123 - 127 Cannon Street London EC4N 5AU

Installation of internal secondary glazing to the existing windows at first to fifth-floor levels

Listed Building Consent City Of London
25 Aug 2026 Under Consideration 26/01211/LBC

302 Shakespeare Tower Barbican London EC2Y 8NJ

Internal alterations comprising (i) The removal of non-original openings between the kitchen and living spaces (ii) Strip out the refurbishment of the...

Listed Building Consent City Of London
25 Aug 2026 Under Consideration 26/01207/FULL

25 Gresham Street London EC2V 7HN

Works to the ninth floor terrace comprising: (i) improvements to access, (ii) installation of planters and seating, (iii) installation of a new glazed...

Full Planning Permission City Of London
23 Aug 2026 Under Consideration 26/01098/FULL

66 Shoe Lane London EC4A 3BQ

Refurbishment and reconfiguration of eighth floor terrace, including installation of new plant and the erection of an acoustic enclosure; landscaping ...

Full Planning Permission City Of London
21 Aug 2026 Under Consideration 26/01195/LBC

2 Moorgate London EC2R 6AG

Alterations to a listed building including: extension at roof level and introduction of a roof terrace, upgrades to facade including entrance doorset ...

Listed Building Consent City Of London
21 Aug 2026 Under Consideration 26/01104/FULL

30 - 34 Moorgate London EC2R 6DA

Refurbishment and alterations comprising, (i) alterations to plant equipment at roof level, (ii) installation of CCTV cameras, (iii) alterations to gr...

Full Planning Permission City Of London
21 Aug 2026 Approved 2 Oct 26/00985/FULL

Aldgate House 33 Aldgate High Street London EC3N 1AH

Installation of 1no. fire escape door to eastern elevation and associated external alterations including the installation of (i) 1no. gate within exis...

Full Planning Permission City Of London
18 Aug 2026 Under Consideration 26/01187/FULL

Glade House 52 - 54 Carter Lane London EC4V 5EA

Upgrade of rooftop building services plant, external facade refurbishment to front and rear facade including brickwork cleaning, replacement of existi...

Full Planning Permission City Of London
17 Aug 2026 Approved 20 Oct 26/01179/LBC

Shaws Booksellers Public House 31 - 34 St Andrew's Hill London EC4V 5DE

Alterations to a Listed building including: (i) installation of externally illuminated fascia signage, projecting signage and menu signs (ii) installa...

Listed Building Consent City Of London
14 Aug 2026 Under Consideration 26/01176/LBC

Open Space Adjacent To Staple Inn Hall Staple Inn London

Alter railings on the west side of garden to Staple Inn Buildings to form gate and creation of platform for paladins. Increase height of railings acro...

Listed Building Consent City Of London
13 Aug 2026 Under Consideration 26/01160/LBC

Livery Hall Ironmongers' Hall Shaftesbury Place London EC2Y 8AA

Installation of temporary scaffold tie fixings to facades to facilitate access scaffolding.

Listed Building Consent City Of London
12 Aug 2026 Under Consideration 26/01064/FULL

Public House 16 Byward Street London EC3R 5BA

Alterations to external elevations including the installation of brass cladding to window cills, the installation of 2no. lanterns above entrance door...

Full Planning Permission City Of London
10 Aug 2026 Under Consideration 26/01145/LBC

48 - 51 Leadenhall Market London EC3V 1LT

Internal refurbishment of the ground floor of the unit, including the construction of new ambulant toilet and 2no. urinal focilities.

Listed Building Consent City Of London
7 Aug 2026 Under Consideration 26/01048/LBC

3 Temple Gardens Middle Temple Lane London EC4Y 9AU

Proposed improvement and refurbishment of the existing building, comprising external changes to provide step-free access including an automated entran...

Listed Building Consent City Of London
7 Aug 2026 Under Consideration 26/01047/FULL

3 Temple Gardens Middle Temple Lane London EC4Y 9AU

Proposed improvement and refurbishment including external changes introducing step-free access to the building, including an automated entrance and ne...

Full Planning Permission City Of London
7 Aug 2026 Under Consideration 26/01084/LBC

Chapter House St Paul's Churchyard London EC4M 8AD

Alterations to undercroft of St Paul's Cathedral and minor alterations to Chapter House including (i) Installation of a new passenger lift and associa...

Listed Building Consent City Of London
7 Aug 2026 Under Consideration 26/01083/FULL

Offices Chapter House St Paul's Churchyard London EC4M 8AD

Alterations to undercroft of St Paul's Cathedral and minor alterations to Chapter House including (i) Installation of a new passenger lift and associa...

Full Planning Permission City Of London
3 Aug 2026 Approved 17 Sep 26/01113/FULL

Evermore 128 Queen Victoria Street London EC4V 4BJ

Removal of brise soleil to the northern elevation of the building.

Full Planning Permission City Of London
3 Aug 2026 Approved 22 Sep 26/01115/LBC

1 Royal Exchange London EC3V 3LL

Internal alterations at first floor level.

Listed Building Consent City Of London
3 Aug 2026 Under Consideration 26/01055/LBC

St Ethelburga's Centre For Reconciliation And Peace 78 Bishopsgate London EC2N 4AG

Installation of secondary glazing.

Listed Building Consent City Of London
31 Jul 2026 Approved 21 Sep 26/01107/LBC

Park House 16 Finsbury Circus London EC2M 7EB

Internal alterations to ground floor level including new partitions and office fit out.

Listed Building Consent City Of London
30 Jul 2026 Under Consideration 26/01087/FULL

Thames Court 1 Queenhithe London EC4V 3DX

Works comprising: (i) replacement of the existing generator; (ii) replacement of condenser units within the existing rooftop plant enclosure; (iii) in...

Full Planning Permission City Of London
29 Jul 2026 Approved 14 Oct 26/01082/LBC

Land At The Rear of 37 - 39 Lime Street, 40 Lime Street And 130 Fenchurch Street

Removal of existing staircase and installation of a new staircase within the rear lightwell, making use of existing facade and new openings within exi...

Listed Building Consent City Of London
29 Jul 2026 Approved 14 Oct 26/01081/FULL

Land At The Rear of 37 - 39 Lime Street, 40 Lime Street And 130 Fenchurch Street

Removal of existing staircase and installation of a new staircase within the rear lightwell, making use of existing facade and new openings within exi...

Full Planning Permission City Of London
29 Jul 2026 Under Consideration 26/00759/LBC

14 New Bridge Street London EC4V 6AG

Removal of the existing roof pitch to the west of the roof, extension of the existing roof terrace into that area, together with the installation of a...

Listed Building Consent City Of London
29 Jul 2026 Under Consideration 26/00758/FULL

14 New Bridge Street London EC4V 6AG

Removal of the existing roof pitch to the west of the roof, extension of the existing roof terrace into that area, together with the installation of a...

Full Planning Permission City Of London
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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 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.

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