1 Colbeck Mews, London, SW7 4LX Data via plota.co.uk

Consultation PP/26/01950
Change of useExtensions & alterationsNew homes
Council
Kensington and Chelsea 5.1/10
Date received
20 Apr 2026
Date validated
20 Apr 2026
Postcode
SW7 4LX

Description

Conversion of existing single dwellinghouse into two self-contained dwellinghouses, including excavation of a basement level, internal and external refurbishment works, alterations to front elevation fenestration, and installation of rooflights Data via plota.co.uk

Get alerts nearby Council site ↗

Last checked

Decision outlook

Plota predicted a decision around 14 Sept 2026; it is now day 147.

Day 147, past the statutory target. 55% of changes of use in Kensington and Chelsea are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 12 Sept 2026.

Day 14791 days past the 56-day target
30%decided within 8 weeks
83%approved
78decided in the last year

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

Site constraints 5

Courtfield 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 Named permitted development rights are withdrawn here.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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Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
Flat 19, 20-22 Harrington Gardens, London, SW7 4LS
Internal alterations and refurbishment including alterations to non original partitions…
LB/25/05864
2025
39 Harrington Gardens, London, SW7 4JU
Alterations to include brick vents on the east and west facades at second floor level to…
PP/25/06487
2025
39 Harrington Gardens, London, SW7 4JU
Internal and external alterations to the second floor including provision of four bedroom…
LB/25/06488
2025 Approved
39 Harrington Gardens, London, SW7 4JU
Internal and external alterations to the first floor associated with use of building as s…
LB/25/04611
2025 Approved
39 Harrington Gardens, London, SW7 4JU
External and internal alterations relating to proposals for ground and mezzanine floors
LB/25/03915
2025 Approved
39 Harrington Gardens, London, SW7 4JU
Provision of new ventilation extract system on east facade to serve proposed ensuite bath…
PP/25/04541
2025 Approved
9 Colbeck Mews, London, SW7 4LX
Variation of condition 2 (compliance with approved drawings) of planning permission 23/08…
PP/25/05175
2025 Approved
5-7 Courtfield Mews, London, SW5 0NH
Roof works including installation of new mansard roof and raising of part front and side…
PP/25/04705
2025 Approved
39 Harrington Gardens, London, SW7 4JU
Proposed installation of a brick vent for a mechanical extraction system to ventilate the…
PP/25/03922
2025
39 Harrington Gardens, London, SW7 4JU
Change of use of building (Class E(g)(i)) to a single family dwelling (Class C3), with as…
PP/25/04291
2025
39 Harrington Gardens, London, SW7 4JU
Internal and external alterations associated with use of building as single family dwelli…
LB/25/04278
2025 Approved
39 Harrington Gardens, London, SW7 4JU
Internal and external alterations to the rear basement and rear terrace. This work would…
LB/25/02644
2025 Approved
39 Harrington Gardens, London, SW7 4JU
Internal and external alterations to the rear basement and rear terrace. This work would…
PP/25/02643
2025 Approved
5-7 Courtfield Mews, London, SW5 0NH
Alterations to roof to accommodate a passenger elevator with installation of slate clad m…
PP/25/02477
2025 Approved
4 Colbeck Mews, London, SW7 4LX
Excavation and construction of a basement beneath existing ground floor and installation…
PP/25/00848
2025 Approved
1 Courtfield Mews, London, SW5 0NH
Extension of existing second floor mansard roof; external alterations to fenestration inc…
PP/25/01166
2025 Refused
39 Harrington Gardens, London, SW7 4JU
Installation of exterior shaftless lift, external alterations and gilt leather wallpaper…
LB/25/00355
2025 Refused
39 Harrington Gardens, London, SW7 4JU
Installation of exterior shaftless lift, external alterations and gilt leather wallpaper…
PP/25/00354
2025 Approved
Garden Enclosure Rear Of 1 To 9, Wetherby Gardens, London
FELL 1 x Plum
ARB/25/00979
2024 Approved
Flat 1, 63 Harrington Gardens, London, SW7 4JZ
Alterations to rear terrace garden area including railing around lightwell; new fencing…
PP/24/06907
2016 Approved
36 Harrington Gardens, LONDON, SW7 4LT
Increase in height of roof and addition of two skylights to existing loft roof.
PP/16/02651
2016 Approved
Flat 4, 75 Harrington Gardens, LONDON, SW7 4JZ
Replace windows and enlarge window opening and modify brickwork surround.
PP/16/01224
2016 Approved
Flat 13, 33-35 Courtfield Road, LONDON, SW7 4DB
Erection of mansard addition to front elevation.
PP/16/01426
2016 Withdrawn
Flat C, 36 Harrington Gardens, LONDON, SW7 4LT
Increase height of roof, installation of two dormer windows to rear. Installation of 3 sk…
PP/16/00837
2016 Approved
39 Harrington Gardens, LONDON, SW7 4JU
Alterations to means of escape following removal of reciprocal means of escape at third f…
LB/16/00317
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