Basement Flat, 57 Cornwall Crescent, London, W11 1PJ Data via plota.co.uk

CON/26/05547 - Discharge of Conditions Consultation
Admin / procedural

Proposal

Details required by condition 5 (Flood Risk Assessment/Sustainable Drainage Systems Strategy) of planning permission (Partial retention of, and alterations to lower ground floor rear extension) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
14 Oct 2026
Decision
Expected by 9 Dec 2026

Under consideration

No decision has been issued yet. A decision is expected by 9 Dec 2026.

Comments are open until 13 Nov 2026

Comment on this application ↗

Documents

View the documents on the council's website ↗

Site constraints 7

Ladbroke 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 Named permitted development rights are withdrawn here.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 ↗
Registered park or garden about 88 m away: Ladbroke Estate
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
Also on the record
Inside the Kensington and Chelsea built-up area; Public transport access: PTAL 3 (moderate), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 17 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, 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 area70 m² (753 sq ft)
Energy ratingC (71 out of 100)
PropertyMid-terrace flat, 3 habitable rooms
BuiltBefore 1900
HeatingBoiler and underfloor heating, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in March 2021, 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

9 Jul 2026Pending

53 Cornwall Crescent, London, W11 1PJ

Replacement of existing single glazed timber sash windows with new double-glazed...

PP/25/03884
29 Jun 2026Approved

55 Cornwall Crescent, London, W11 1PJ

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PP/26/02800
28 May 2026Approved

41-43 Cornwall Crescent, London, W11 1PJ

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PP/26/02663

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Important details

Council
Kensington and Chelsea
Application type
Discharge of Conditions
Postcode
W11 1PJ
Received
14 Oct 2026
Validated
14 Oct 2026
Ward
Norland
Target decision
9 Dec 2026
Applicant
Show
Freehold owner
Show

Consultation & key dates

Comments by
13 Nov 2026

Historical activity at this location

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

This property

Previous applications at this address

2022 Approved
Partial retention of, and alterations to, existing lower ground floor rear extension.
PP/22/02575
2020 Refused
Erection of single storey rear extension to basement flat with lantern roof and lightwell
PP/20/06738
2019 Approved
Details required by condition 4 (sustainable urban drainage system - SuDS report) of plan…
CON/19/05347
2018 Approved
Construction of single storey rear extension to basement flat with lantern roof and light…
PP/18/08001
2018 Approved
Details required by condition 3 (Sustainable Urban Drainage System (SuDS)) of planning pe…
CON/18/06883
2018 Approved
Details required by condition 3 (Sustainable Urban Drainage System - SUDS) of planning pe…
CON/18/05097
2018 Approved
Single storey rear extension to basement flat
PP/18/02451
2018 Refused
Single storey rear extension to basement flat with lantern roof and light well
PP/18/01084
Within ~100m

Nearby activity

2025 Approved
105 Blenheim Crescent, London, W11 2EQ
Replacement of existing box sash windows to front and rear elevations - like for like but…
PP/25/06421
2025 Approved
72 Blenheim Crescent, London, W11 1NZ
Prune 1x Sycamore at rear
ARB/25/06675
2025
115 Blenheim Crescent, London, W11 2EQ
Installation of retractable awning to rear bay window at upper ground floor (Retrospectiv…
PP/25/06434
2025 Approved
First/second Floor Flat, 77 Cornwall Crescent, London, W11 1PJ
Installation of cast iron rear balcony at first floor level and replacement of window wit…
PP/25/05139
2025 Approved
72 Blenheim Crescent, London, W11 1NZ
Replacement of existing French doors on rear elevation at lower ground and ground floor l…
PP/25/04638
2025 Approved
72 Blenheim Crescent, London, W11 1NZ
Replacement of existing windows with double glazed units, replacement of bin store within…
PP/25/04543
2025 Approved
66 Blenheim Crescent, London, W11 1NZ
Partial reconstruction of existing rear extension at upper ground floor level with new bi…
PP/25/03778
2025 Approved
127 Blenheim Crescent, London, W11 2EQ
Reintroduction of original front boundary pillar and pedestrian gate to match neighbourin…
PP/25/03954
2025 Withdrawn
First/second Floor Flat, 77 Cornwall Crescent, London, W11 1PJ
Installation of cast iron rear balcony at first floor level and replacement of window wit…
PP/25/03354
2025 Approved
First Floor Flat, 58 Blenheim Crescent, London, W11 1NY
Construction of extension onto rear second floor terrace. Installation of low profile roo…
PP/25/01818
2025 Withdrawn
112-114 Clarendon Road, London, W11 1SA
Variation of condition 2 (compliance with approved drawings) and removal of condition 7 (…
PP/25/01435
2025 Approved
84-86 Blenheim Crescent, London
FELL 3 x Sycamore (rear)
ARB/25/00559
2024 Approved
113 Blenheim Crescent, London, W11 2EQ
Rehanging front entrance gate from pavement, re-forming front entrance steps and lower an…
PP/24/08428
2024 Approved
69 Cornwall Crescent, London, W11 1PJ
Replacement of single glazed timber sash windows with double glazed timber sash windows o…
PP/24/08409
2024 Approved
Flat C, 69 Cornwall Crescent, London, W11 1PJ
Erection of mansard roof extension, and installation of 3 x dormer windows, 1 x bifold do…
PP/24/07818
2024 Approved
55 Cornwall Crescent, LONDON, W11 1PJ
Single storey rear extension, bike store and planter to the frontage and other associated…
PP/24/04763
2024 Approved
125 Blenheim Crescent, LONDON, W11 2EQ
Internal remodelling; introduction of lower ground floor boiler room underneath the front…
PP/24/03226
2024 Approved
Flat C, 69 Cornwall Crescent, LONDON, W11 1PJ
Erection of mansard roof extension; enlargement of second floor flat to provide additiona…
PP/24/03811
2024 Approved
117 Blenheim Crescent, LONDON, W11 2EQ
Installation of a single air conditioning unit to rear garden. (Retrospective Application)
PP/24/04540
2024 Approved
Flat A, 69 Cornwall Crescent, LONDON, W11 1PJ
Erection of single storey rear extension; enlargement of lower/ground floor flat to provi…
PP/24/03809
2016 Refused
103 Blenheim Crescent, LONDON, W11 2EQ
Replacement of existing roof structure to create a new floor of residential accommodation
PP/16/03285
2016 Approved
94 Blenheim Crescent, LONDON, W11 1NZ
Prune 1 x Sycamore
ARB/16/03411
2016 Approved
116 Clarendon Road, LONDON, W11 1SA
Unspecified X 1 Robinia
ARB/16/02935
2016 Approved
Flat A, 59 Cornwall Crescent, LONDON, W11 1PJ
Alterations to front and rear fenestration, including replacement of uPVC windows with sa…
PP/16/02488
2016 Approved
51 Cornwall Crescent, LONDON, W11 1PJ
Installation of external stairlift and minor alterations to communal front access steps
PP/16/00328
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

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.

Freehold owner: 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.