4A Cadogan Square, London, SW1X 0JU Data via plota.co.uk

PP/26/05845 - Planning Permission Consultation
Extensions & alterations

Proposal

Proposed scheme encompasses internal reconfiguration, sensitive external restoration, fenestration enhancements, and replacement and extension of existing side conservatory. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
2 Nov 2026
Decision
Expected by 28 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 2 Jan 2027 and 10 Feb 2027, from Kensington and Chelsea's recent extensions.

Comments are open until 27 Nov 2026

Comment on this application ↗

Documents

View the documents on the council's website ↗

Site constraints 10

Hans Town conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
2 Article 4 directions
Article 4 - No 100 · Article 4 - No 60. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Tree preservation order
Consent is needed before work on protected trees.
Not every council has published its orders as open data, so no order shown is not proof there is none.
Air quality management area: Kensington and Chelsea AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
21 listed buildings within 150 m
Nearest: 6-16, Cadogan Square Sw1, Grade II, 15 m away · 2 Grade II*, 19 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 21 with distances
Historic England ↗
National infrastructure project 784 m away: Thames Tideway Tunnel
The site is 784 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 32 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Also on the record
Registered park or garden 127 m away: Hans Place; Inside the Kensington and Chelsea built-up area; Public transport access: PTAL 6a (excellent), TfL 2023, for the 100 m square; Designated open space 33 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 4 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Building

Floor area156 m² (1,679 sq ft)
Energy ratingD (67 out of 100), could reach C
PropertySemi-detached house, 4 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in April 2026, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Other new applications on this street

14 Oct 2026Pending

10 Cadogan Square, London, SW1X 0JU

Works comprise recovering an existing lead finished flat roof with new lead. As ...

PP/26/04888
25 Aug 2026Approved

10-12 Cadogan Square, London, SW1X 0JU

Replacement of an existing lead finish to a flat roof with new lead.

LB/26/04587
2 Nov 2026Pending

56 Clabon Mews and, 24 Cadogan Square, London, SW1X 0JP

Partial rebuilding of 56 Clabon Mews with altered roof form to provide a roof te...

PP/26/05842
21 Oct 2026Pending

29 Cadogan Square, London, SW1X 0HU

Further to Fire Door Survey, upgrade to internal doors, frames and vault doors i...

LB/26/05599

Nearby new applications

2 Nov 2026Pending

56 Clabon Mews and, 24 Cadogan Square, London, SW1X 0JP

Partial rebuilding of 56 Clabon Mews with altered roof form to provide a roof te...

PP/26/05842
2 Nov 2026Pending

56 Clabon Mews and, 24 Cadogan Square, London, SW1X 0JP

Partial rebuilding of 56 Clabon Mews with altered roof form to provide a roof te...

LB/26/05843
2 Nov 2026Pending

42 Ovington Square, London, SW3 1LR

Listed building consent for internal and external refurbishment and access alter...

LB/26/05880
2 Nov 2026Pending

30-33 Sloane Street, London, SW1X and 2-4 Hans Crescent, London, SW1X

Verification Order required to confirm the numbering and description of the rede...

SNN/26/05805
30 Oct 2026Pending

64 Sloane Street, London, SW1X 9SH

Retrospective listed building consent to Internal alterations to all floors, inc...

LB/26/05720
30 Oct 2026Pending

204-206 Sloane Street, London, SW1X 9QX

Installation of removable/ demountable security bollards to pavement frontage of...

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Important details

Council
Kensington and Chelsea
Application type
Planning Permission
Postcode
SW1X 0JU
Received
2 Nov 2026
Validated
2 Nov 2026
Ward
Brompton and Hans Town
Case officer
Show
Target decision
28 Dec 2026
Applicant
Show

Decision outlook

Day 4 of the 56-day target. Kensington and Chelsea usually decides extensions by day 78.

Day 474 days to the predicted decision (day 78)
35%decided within 8 weeks
95%approved
1,595decided in the last year

Plota live figures for extensions decided by Kensington and Chelsea in the last twelve months, from validation. Kensington and Chelsea decision record →

Consultation & key dates

Comments by
27 Nov 2026

Historical activity at this location

27 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2023 Approved
Prune 1 x Plane
ARB/23/05898
2019 Decided
Prune 1 x London Plane (front)
ARB/19/02106
Within ~100m

Nearby activity

2025 Approved
Ground Floor Flat, 15 Cadogan Square, London, SW1X 0HT
Air Conditioning condenser to be housed in rear terrace concealed area to feed rooms hous…
PP/25/05814
2025 Approved
Ground Floor Flat, 15 Cadogan Square, London, SW1X 0HT
Air Conditioning condenser to be housed in rear terrace concealed area to feed rooms hous…
LB/25/05815
2025 Approved
120 Pavilion Road, London, SW1X 0AX
Variation of condition 2 (compliance with approved drawings) of planning permission 23/01…
PP/25/04980
2025 Approved
155 Pavilion Road, London, SW1X 0BJ
Construction of basement beneath property and provision of plant within an acoustic housi…
PP/25/04632
2025 Approved
Flat 7, 31 Pont Street, London, SW1X 0BB
Installation of air conditioning unit and acoustic enclosure at roof level for second flo…
PP/25/03149
2025 Approved
56 Clabon Mews and, 24 Cadogan Square, London, SW1X
Variation of Condition 2 (Compliance with drawings) of listed building consent LB/24/0379…
LB/25/01838
2025 Approved
10-12 Cadogan Square, London, SW1X 0JU
Refurbishment works comprising: reinstatement of existing door opening, replacement of mo…
LB/25/01859
2025 Withdrawn
56 Clabon Mews and, 24 Cadogan Square, London
Variation of Condition 2 (compliance with approved drawings) of listed building consent 2…
LB/25/00957
2024 Approved
10 Shafto Mews, London, SW1X 0JT
Variation of condition No. 2 (compliance with approved drawings) of planning permission 2…
PP/25/00014
2025 Approved
Flat 5, 10 Cadogan Square, London, SW1X 0JU
Internal alterations and replacement window to rear, and door to front elevation at 5th f…
LB/25/00398
2025 Approved
13 Cadogan Square, London, SW1X 0HT
Restoration of fire/water damage at second floor (Flat 3), third floor (Flat 4), and four…
LB/25/00811
2025 Approved
13 Cadogan Square, London, SW1X 0HT
Restoration of fire/water damage at second floor (Flat 3), third floor (Flat 4), and four…
PP/25/00810
2024 Refused
114 Pavilion Road, London, SW1X 0AX
Variation of condition 2 (approved drawings) of planning permission 23/05495 to install C…
PP/24/06654
2024 Approved
Ground/second Floor Flat (front), 27 Cadogan Square, London, SW1X 0HU
Installation of an air conditioning system, including internal units (see previously appr…
PP/24/05872
2024 Approved
114 Pavilion Road, London, SW1X 0AX
Variation of Condition 2 (compliance with approved drawings) of planning permission 23/05…
PP/24/06608
2024 Approved
Ground/second Floor Flat (front), 27 Cadogan Square, London, SW1X 0HU
Installation of an air conditioning system, including internal units (see previously appr…
LB/24/05873
2024 Approved
5 Cadogan Square, LONDON, SW1X 0HT
Removal of existing upper ground floor entrance door and screen and installation of repla…
LB/24/06074
2024 Approved
5 Cadogan Square, LONDON, SW1X 0HT
Removal of existing upper ground floor entrance door and screen and installation of repla…
PP/24/06073
2024 Approved
Flat 1, 15 Cadogan Square, LONDON, SW1X 0HT
Internal reconfiguration works and refurbishment of one bedroom ground floor flat to crea…
PP/24/05020
2024 Approved
Flat 1, 15 Cadogan Square, LONDON, SW1X 0HT
Internal reconfiguration works and refurbishment of one bedroom ground floor flat to crea…
LB/24/05021
2019 Refused
Flat 3, 17-21 Cadogan Square and Lower Ground and Ground Floors 21 Cadogan Square, London, SW1X
Internal alterations including reinstatement of original staircase from ground to first f…
PP/19/02554
2019 Approved
Flat 1, 23 Cadogan Square, London, SW1X 0HU
Air conditioning unit to roof and associated internal works (first floor)
LB/19/03805
2019 Approved
Flat 1, 23 Cadogan Square, London, SW1X 0HU
Air conditioning unit to roof
PP/19/03804
2019 Approved
4-6 Cadogan Square, London, SW1X 0JU
Prune 1 x London Plane ()
ARB/19/03846
2019 Approved
Flat 1, 23 Cadogan Square, London, SW1X 0HU
Refurbishment including alterations to internal partition layout
LB/19/03472
Kensington and Chelsea
Planning Authority Score
5.1/10
Average
#144 of 296 councils
Relevant to this application:
Householder decisions

Kensington and Chelsea ranks #174 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Kensington and Chelsea decision statistics
Based on MHCLG data, the nine months to December 2025
93%
Overall approval rate
Above avg (87%) #58 of 296
94%
Householder approved
Above avg (90%) #110 of 296
61%
Decided in 8 weeks
Below avg (63%) #174 of 296
40%
Extended time limit
Below avg (41%) #152 of 296
94%
Minor dwellings approved
455 decided (1-9 homes)
87%
Change of use approved
53 decided
1,839
Total decisions
135 refused in the nine months to December 2025
Source: MHCLG planning statistics · See full council rankings

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.