Fourth And Fifth Floor Flat, 50 Cadogan Square, London, SW1X 0JW Data via plota.co.uk

PP/26/04656 - Planning Permission Consultation
Extensions & alterationsSolar & renewables

Proposal

A fifth-floor rear extension including aluminium framed double glazed sliding doors with concealed external shutters; installation of air source heat pump; replacement windows and glazing; re-paving of fourth and fifth floor level roof terraces; replacement railings; addition of timber screening; installation of roof insulation and replacement roof covering; associated internal and external alterations at fourth and fifth floor levels including new finishes and custom fitted joinery Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
25 Aug 2026
✓
Validated
9 Sept 2026
Decision
Expected by 4 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 11 Nov 2026 and 23 Dec 2026, from Kensington and Chelsea's recent extensions.

The consultation period closed on 2 Oct 2026.

Documents

View the documents on the council's website ↗

Site constraints 10

24 listed buildings within 150 m of the postcode pin
Nearest: 50, Cadogan Square Sw1, Grade II, the postcode pin is inside its outline · 6 Grade II*, 18 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 24 with distances
Historic England ↗
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 ↗
Article 4 direction
Article 4 - No 100. Named permitted development rights are withdrawn here.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 ↗
National infrastructure project about 746 m away: Thames Tideway Tunnel
The site is about 746 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, about 112 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 about 223 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 about 36 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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.

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Important details

Council
Kensington and Chelsea
Application type
Planning Permission
Postcode
SW1X 0JW
Received
25 Aug 2026
Validated
9 Sept 2026
Ward
Brompton and Hans Town
Case officer
Show
Target decision
4 Nov 2026
Applicant
Show
Leaseholder
Show

Decision outlook

Day 49 of the 56-day target. Kensington and Chelsea usually decides extensions by day 83.

Day 4934 days to the predicted decision (day 83)
33%decided within 8 weeks
95%approved
1,441decided 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
2 Oct 2026

Historical activity at this location

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

This property

Previous applications at this address

2018 Approved
Construction of rear addition at 5th floor to roof terrace within footprint of pergola, t…
LB/18/03545
2018 Approved
Construction of rear addition at 5th floor to roof terrace within footprint of pergola, t…
PP/18/03544
2018 Approved
Replace UPVC double-glazed casement rear and side elevation windows with timber double-gl…
LB/18/00755
2018 Approved
Replace UPVC double-glazed casement rear and side elevation windows with timber double-gl…
PP/18/00754
2017 Approved
Refurbishment of apartment including new stair location between fourth and fifth floor, n…
LB/17/06552
2017 Approved
Refurbishment of apartment including new stair location between fourth and fifth floor, n…
PP/17/06551
Within ~100m

Nearby activity

2025 Approved
43 Lennox Gardens, London, SW1X 0DF
Repairs to windows and replacement of roof covering, promenade tiles, coping stones, rail…
LB/25/05826
2025 Approved
33 Clabon Mews, London, SW1X 0EQ
Complete internal refurbishment and structural works. Exterior renovations to render, doo…
PP/25/05248
2025 Approved
33 Clabon Mews, London, SW1X 0EQ
Excavation of single storey basement
PP/25/05360
2025 Approved
Gardens, Cadogan Square, London, SW1
Prune 2 x Platanus x hispanica (T419 and T444) in garden square.
ARB/25/05932
2025 Approved
10-12 Cadogan Square, London, SW1X 0JU
Refurbishment works comprising: reinstatement of existing door opening, replacement of mo…
LB/25/01859
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
Gardens, Cadogan Square, London
Prune 2 x Platanus x hispanica (London Plane)
ARB/25/00886
2024 Approved
Gardens, Cadogan Square, London
FELL 1 x Prunus cerasifera (Cherry Plum (Myrobalan) and 1 x Cotoneaster sp: Prune 2 x Cot…
ARB/24/08038
2024 Withdrawn
Flat B, 54-56 Cadogan Square, LONDON, SW1X 0JW
Formation of two roof terraces at rear fifth floor level
PP/24/02786
2024 Withdrawn
Flat B, 54-56 Cadogan Square, LONDON, SW1X 0JW
Formation of two roof terraces at rear fifth floor level
LB/24/02787
2024 Approved
Flat 7, 43 Lennox Gardens, LONDON, SW1X 0DF
Internal alterations, new internal cooling units, new timber sash windows to front elevat…
LB/24/02252
2024 Approved
Flat 7, 43 Lennox Gardens, LONDON, SW1X 0DF
Internal alterations, new internal cooling units, new timber sash windows to front elevat…
PP/24/02251
2024 Approved
Flat 5, 43 Lennox Gardens, LONDON, SW1X 0DF
Internal redecoration throughout listed apartment.
LB/24/01144
2023 Withdrawn
Ground Floor Flat, 8 Cadogan Square, LONDON, SW1X 0JU
Ground floor infill extension over existing lower ground infill extension.
PP/23/05121
2023 Withdrawn
Ground Floor Flat, 8 Cadogan Square, LONDON, SW1X 0JU
Ground floor infill extension over existing lower ground infill extension.
LB/23/05122
2023 Refused
61 Clabon Mews, LONDON, SW1X 0EQ
Creation of terrace and green roof, with access from second floor, replacement of rooflig…
PP/23/07146
2023 Approved
Flat 4, 10 Cadogan Square, LONDON, SW1X 0JU
Alteration of internal partitions and external works at third floor; reinstatement of his…
LB/23/05684
2023 Approved
Flat 4, 10 Cadogan Square, LONDON, SW1X 0JU
Alteration of internal partitions and external works at third floor; reinstatement of his…
PP/23/05683
2023 Withdrawn
Flat F, 23 Lennox Gardens, London, SW1X 0DE
Removal of partition wall within main living space; reconfiguration of doorways within pr…
LB/23/06356
2023 Approved
Second Floor Flat, 12 Cadogan Square, London, SW1X 0JU
Refurbishment of kitchen, addition of shower room and refurbishment of bathroom to provid…
LB/23/05968
2019 Approved
25 Lennox Gardens, LONDON, SW1X 0DE
Replacement of roof light for maintenance access to roof area; removal of modern loft lad…
LB/19/05399
2019 Approved
Flat 2, 37 Lennox Gardens, LONDON, SW1X 0DF
Removal of 2no. windows on courtyard elevation and replacement with 1no. full height wind…
LB/19/06524
2019 Approved
Flat 2, 37 Lennox Gardens, LONDON, SW1X 0DF
Removal of 2no. windows on courtyard elevation and replacement with 1no. full height wind…
PP/19/06523
2019 Approved
4-6 Cadogan Square, LONDON, SW1X 0JU
Formation of door opening on rear elevation from existing window opening
LB/19/06861
2019 Approved
4-6 Cadogan Square, LONDON, SW1X 0JU
Formation of door opening on rear elevation from existing window opening
PP/19/06860
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

Leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.