23 Blenheim Crescent, London, W11 2EF Data via plota.co.uk

Approved PP/26/02133
Extensions & alterations
Council
Kensington and Chelsea 5.1/10
Date received
5 May 2026
Date validated
5 May 2026
Decision date
29 Jun 2026
Postcode
W11 2EF

Description

Replacement sash & casement windows with heritage style double glazed sash & casement units to closely match existing Data via plota.co.uk

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Last checked

How this decision compares

Decided in 55 days from validation, 35 days faster than Kensington and Chelsea's median of 90 for extensions. Approved, as 96% of extensions here are.

32%decided within 8 weeks
96%approved
1,220decided 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 →

Site constraints 5

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 Named permitted development rights are withdrawn here.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 ↗
Also on the record
Inside the Kensington and Chelsea built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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

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31 Aug 2026Pending

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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

2021 Approved
FELL 1x Ash in rear garden
ARB/21/01987
2017 Approved
Prune 1 x Ash (rear)
ARB/17/05243
Within ~100m

Nearby activity

2025 Approved
Flat, 37 Kensington Park Road, London, W11 2EU
Verification Order required to confirm the description of the newly formed residential un…
SNN/25/04911
2025 Approved
Ground Floor, 11 Blenheim Crescent, London, W11 2EE
Installation of an internally illuminated fascia sign and an externally illuminated proje…
CA/25/02207
2025 Withdrawn
Ground Floor, 195 Portobello Road, London, W11 2ED
New replacement shopfront.
PP/25/01292
2025 Approved
Ground Floor, 195 Portobello Road, London, W11 2ED
Installation of 1no. externally illuminated facia sign, 1no. internally illuminated proje…
CA/25/01293
2025 Approved
4 Kensington Park Mews, London, W11 2EY
Alternations to front roof; removal of roof lantern and replacement with roof light; inst…
PP/25/00806
2025 Approved
59 Elgin Crescent, LONDON, W11 2JD
Prune 1 x Ash (rear)
ARB/25/00419
2025 Approved
Maisonette Lower Ground and Ground Floor, 47 Blenheim Crescent, LONDON, W11 2EF
FELL 1 x Prunus (rear)
ARB/25/00482
2024 Approved
29 Elgin Crescent, London
FELL 1 x Acer and Prune 1 x Robinia (rear)
ARB/24/07403
2024 Approved
210 Kensington Park Road, LONDON , W11 1NR
Renewal of ventilation system serving ground floor restaurant with the introduction of ne…
PP/24/04613
2024 Approved
Ground Floor Flat, 20 Elgin Crescent, LONDON, W11 2JR
Prune 1x London Plane (Platanus x hispanica) in rear garden
ARB/24/06097
2024 Approved
37 Kensington Park Road, LONDON, W11 2EU
Alterations to rear fenestration to include replacement windows with double glazed timber…
PP/24/05063
2024 Approved
37 Kensington Park Road, LONDON, W11 2EU
Amalgamation of two residential units at first, second and third floors to create one x 3…
PP/24/03905
2024 Approved
Basement and Ground Floor Flat, 25 Blenheim Crescent, LONDON, W11 2EF
Prune 1 x Robinia (Robinia psuedacacicia) in rear garden
ARB/24/04147
2024 Approved
198-200 Kensington Park Road, LONDON, W11 1NR
Variation of condition 2 (compliance with approved drawings) of planning permission 22/03…
PP/24/03312
2024 Approved
Third Floor Flat, 23 Elgin Crescent, LONDON, W11 2JD
Removal of 1 roof light and replacement with 5 units to internal roofscape
PP/24/02714
2024 Approved
Basement/ground Floor Flat, 27 Blenheim Crescent, LONDON, W11 2EF
Prune 1 x Ash (rear)
ARB/24/02478
2023 Approved
49 Blenheim Crescent, LONDON, W11 2EF
Alterations at main roof level to increase size of mansard roof addition to the rear and…
PP/23/08143
2023 Approved
Second And Third Floor Flat, 34 Elgin Crescent, LONDON, W11 2JR
Replacement roof covering; replacement rear roof level dormers and roof light; replacemen…
PP/23/08385
2023 Approved
18 Elgin Crescent, London, W11 2JR
Prune 1 x Ash and 1 x Bay (rear)
ARB/23/05732
2023 Approved
Maisonette Flat, 186 Kensington Park Road, LONDON, W11 2ES
Extension and alteration to first and second floor rear outrigger. Infill extension at fi…
PP/23/04010
2016 Approved
3 Blenheim Crescent, LONDON, W11 2EE
Installation of one non-illuminated fascia sign to front elevation
CA/16/04653
2016 Approved
31 Kensington Park Road, LONDON, W11 2EU
Placement of 1 bench, 3 tables and 2 planters on public highway between the hours of 10:0…
PP/16/03729
2016 Refused
First And Second Floor South, 2 Blenheim Crescent, LONDON, W11 1NN
Change of use of first and second floor from office to combined office and residential use
PP/16/03106
2016 Approved
7 Codrington Mews, LONDON, W11 2EH
Construction of basement under existing footprint of basement with alterations to upper f…
PP/16/00648
2016 Approved
14 Elgin Crescent, LONDON, W11 2HZ
Change of use of ground and basement floors from retail unit (Class A1) to restaurant/caf…
PP/16/00627
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