12 Kensington Square, London, W8 5HE Data via plota.co.uk

PP/25/06499 - Planning Permission Refused
Admin / procedural

Proposal

Variation of condition 2 (compliance with approved drawings) of planning permission Ref. (Extensions to existing building including basement extension under garden area, lightwell infill extension and other internal and external alterations) dated 08th August 2023, to allow: removal of one rooflight and enlargement of other; change from the use of York stone to Portland stone; retention of original raised section at end of rear garden; retention of original fountain and replacement of original semi-circular pool with a rectangular one; change from Planting zone to raised bed with built-in seating (Retrospective). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
31 Oct 2025
✗
Refused
10 Jun 2026
Appeal
Not lodged

Refused on 10 Jun 2026 · Last checked 22 Oct 2026

Documents

View the documents on the council's website ↗

Associated applications 7

Site constraints 11

43 listed buildings within 150 m of the postcode pin
Nearest: 11 and 12, Kensington Square W8, Grade II, the postcode pin is inside its outline · 1 Grade II*, 42 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 43 with distances
Historic England ↗
Kensington Square 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 Named permitted development rights are withdrawn here.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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Registered park or garden about 147 m away: The Roof Garden, 99 High St, Kensington; National infrastructure project about 1979 m away: Thames Tideway Tunnel; Inside the Kensington and Chelsea built-up area; Public transport access: PTAL 4 (good), TfL 2023, for the 100 m square; Designated open space about 31 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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Other new applications on this street

26 Jun 2026Approved

Kensington Square Gardens, Kensington Square, London, W8 5HH

Prune 1x Catalpa and 1x Robina

ARB/26/03418

Nearby new applications

22 Oct 2026Pending

6 Launceston Place, London, W8 5RL

Details required by condition 3 a, b, g (submission of details) of listed build...

CON/26/05695
22 Oct 2026Pending

6 Launceston Place, London, W8 5RL

Details required by condition 3 a, b, g (submission of details) of planning per...

CON/26/05694
22 Oct 2026Pending

72 Kensington High Street, London, W8 4PE

Change of use: sub-division of Flat 3 to provide an additional dwelling.

PP/26/05726
22 Oct 2026Pending

8 Kensington Church Walk, London, W8 4NB

Installation of 1no. Air Source Heat Pump to corner of rear first floor terrace.

CL/26/05728
21 Oct 2026Pending

Flat B, 4 Sunningdale Gardens, London, W8 6PX

Installation of external rainwater gutters and downpipes on front fa?ade, on bay...

PP/26/05571
21 Oct 2026Pending

5 Young Street, London, W8 5EH

Installation of 3no. ASHP Condensers at Level 4 rear balcony and 5no. ASHP Conde...

PP/26/05679

Important details

Council
Kensington and Chelsea
Application type
Planning Permission
Postcode
W8 5HE
Received
31 Oct 2025
Validated
31 Oct 2025
Ward
Queen's Gate
Case officer
Show
Target decision
26 Dec 2025
Decision
Refused
Decision date
10 Jun 2026
Applicant
Show

Consultation & key dates

Comments by
3 Apr 2026

Historical activity at this location

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

This property

Previous applications at this address

2025
Details required by condition nos. 4d (rooflight), 4f (paving), and 9 (landscaping) of pl…
CON/25/06504
2025
Variation of condition 2 (compliance with approved drawings) of listed building consent 2…
LB/25/06500
2025
Details required by condition nos. 3d (rooflight), 3f (paving), and 9 (landscaping) of li…
CON/25/06505
2025 Approved
Details required by condition 3d (submission of details) of listed building consent 23/03…
CON/25/03717
2025 Approved
Details required by condition 4d (submission of details - basement roof-lights) of planni…
CON/25/03698
2025 Approved
Details required by condition 12 (Land Contamination details- Verification report) of pla…
CON/25/03697
2025 Withdrawn
Details required by Condition 4a and 4d (Submission of details of: a) glazed infill exten…
CON/25/00306
2024 Approved
Details required by Condition 11 (CLC1 b) Contamination - Quantitative risk assessment an…
CON/24/04647
2023 Approved
Extensions to existing building including basement extension under garden area, lightwell…
LB/23/03486
2023 Approved
Extensions to existing building including basement extension under garden area, lightwell…
PP/23/03485
2022 Withdrawn
Basement extension below garden area, lightwell infill extension, and internal and extern…
LB/22/04232
2022 Withdrawn
Basement extension below garden area, lightwell infill extension, and internal and extern…
PP/22/04231
2021 Approved
Investigative opening up works including trial pit (Listed Building Consent only)
LB/21/03246
Within ~100m

Nearby activity

2025 Approved
18 Kensington Square, London, W8 5HH
Prune 1x Magnolia at front and 1x Magnolia at rear
ARB/25/05548
2025 Approved
6 Kensington Court Place, London, W8 5BJ
Proposed paving to front ground floor entrance and side with black and white mosaic tiles.
PP/25/05732
2025 Approved
27 Ansdell Terrace, London, W8 5BY
Installation of external lateral restraints with external cast iron pattress plates to si…
PP/25/05902
2025 Approved
Flat 32, Esmond Court, Thackeray Street, London, W8 5HB
Removal of external metal fire escape staircase located on east elevation. Reinstatement…
PP/25/04544
2025
St James House, 13 Kensington Square, London, W8 5HD
Re-building of leaning front garden wall in reinforced concrete with a painted rendered f…
LB/25/06106
2025 Approved
26 Thackeray Street, London, W8 5ET
Installation of awning/canopy on front of shop with brand name
LB/25/05034
2025 Approved
Second Floor Flat, 3 Kensington Square, London, W8 5EP
Upgrade glass on front sash windows and one rear window of flat from single glazed to 'Fi…
LB/25/05004
2025 Approved
Second Floor Flat, 3 Kensington Square, London, W8 5EP
Upgrade glass on front sash windows and one rear window of flat from single glazed to 'Fi…
PP/25/05003
2025 Approved
Flat 1, 15 South End, London, W8 5BU
Removal of existing timber framed single glazed windows to front and rear elevation at fi…
PP/25/04723
2025 Approved
Flat 10, Roxburghe Mansions, 32 Kensington Court, London, W8 5BQ
Replacement of 1no. timber sash window on rear elevation with double glazed unit to match…
PP/25/04315
2025 Approved
Flat A, 5 Kensington Square, London, W8 5EP
Removal of bath and installation of level access shower including associated works
LB/25/04670
2025 Approved
26 Thackeray Street, London, W8 5ET
Installation of canvas awning/canopy to shop front with brand name.
CA/25/02823
2025 Approved
First Floor Flat, 3 Kensington Square, London, W8 5EP
Upgrade glass on front sash windows from single glazed to 'Fineo' with the retention of w…
LB/25/01649
2025 Approved
First Floor Flat, 3 Kensington Square, London, W8 5EP
Upgrade glass on front sash windows from single glazed to 'Fineo' with the retention of w…
PP/25/01648
2025 Refused
17 South End, London, W8 5BU
Replacement of garage doors and first floor windows on front elevation (Retrospective app…
PP/25/01325
2025 Approved
19 Kensington Square, London, W8 5HH
To remove from site existing toilet cistern, to repair and then reinstate fitting.
LB/25/02144
2025 Approved
19 Kensington Square, London, W8 5HH
Take up front paving and steps; install asphalt waterproofing, reinstate paving and steps…
LB/25/01563
2025 Approved
St James House, 13 Kensington Square, London, W8 5HD
Installation of boundary railings and gated entrance; re-building of leaning front garden…
LB/25/00755
2025 Approved
St James House, 13 Kensington Square, London, W8 5HD
Installation of boundary railings and gated entrance; re-building of leaning front garden…
PP/25/00754
2025 Approved
7 Kensington Court Place, London, W8 5BJ
Proposed works to render the existing brickwork to the rear of the building (Amended Desc…
PP/25/00192
2021 Approved
Garden Shed, Kensington Square Gardens, Kensington Square, London W8
Decision Order required to confirm the description of the Garden Shed within Kensington S…
SNN/21/01995
2021 Approved
18 Ansdell Terrace, LONDON, W8 5BY
Removal of white boxing above parapet level to front of property, replacement with balust…
PP/21/00648
2020 Refused
14 Thackeray Street, London, W8 5ET
Change of use of ground floor from Class A1 (retail) to mixed class A1/A3 (retail/ caf?)…
PA/20/03345
2020 Approved
14 Thackeray Street, London, W8 5ET
Installation of retractable awning with advertising and painting on wooden fascia above p…
CA/20/01829
2019 Approved
Flat C, 5 Kensington Square, LONDON, W8 5EP
Alterations to internal bathroom to provide adapted level access shower to meet disabilit…
LB/19/03454
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