Flat 1/2, 21 Onslow Gardens, London, SW7 3AL Data via plota.co.uk

Withdrawn PP/26/01299
Extensions & alterationsUtility infrastructure
Council
Kensington and Chelsea 5.1/10
Date received
1 Apr 2026
Date validated
1 Apr 2026
Decision date
14 Jul 2026
Postcode
SW7 3AL

Description

Internal alterations at ground floor and lower ground floor levels; alterations to internal lightwell; alterations to fenestration to restore original character of rear elevation at lower ground floor level and installation of AC units Data via plota.co.uk

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Last checked

Site constraints 5

Thurloe/Smith's Charity 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 Named permitted development rights are withdrawn here.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

21 Aug 2026Pending

17A Onslow Gardens, London, SW7 3AL

Installation of Air Source Heat Pump (ASHP) on raised gantry within southern lig...

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Reconstruction of rear wall in London Stock brick laid in lime mortar; replaceme...

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2 Jul 2026Approved

18 Selwood Terrace, Onslow Gardens, London, SW7 3QG

FELL 1 x Pine (front)

ARB/26/03560
21 May 2026Approved

70 Onslow Gardens, London, SW7 3QB

Removal of marble steps and replacement with Victorian style tile pattern; repla...

LB/26/02614

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Internal reconfiguration of existing basement accommodation to provide dedicated...

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Prune 1 x Magnolia (front)

ARB/26/04841
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4 Sept 2026Pending

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Alteration to front boundary wall, increasing height of wall; extended using br...

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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

2018 Approved
Internal alterations at ground floor and lower ground floor levels. Alterations to the in…
LB/18/06242
2018 Approved
Internal alterations at ground floor and lower ground floor levels. Alterations to the in…
PP/18/06241
Within ~100m

Nearby activity

2025 Approved
7 Neville Terrace, Onslow Gardens, London, SW7 3AT
Replacement of upper roof coverings and front roof window
LB/25/06552
2025 Approved
70 Onslow Gardens, London, SW7 3QB
External repairs, internal redecorations and fire safety works
LB/25/05674
2025 Approved
14 Selwood Terrace, Onslow Gardens, London, SW7 3QN
Installation of removable secondary glazing to windows to front elevation on the ground a…
LB/25/04979
2025
7 Neville Terrace, Onslow Gardens, London, SW7 3AT
Replacement of upper roof coverings and front roof window
PP/25/06551
2025 Withdrawn
17A Onslow Gardens, London, SW7 3AL
Installation of an Air Source Heat Pump (ASHP) on a raised gantry within southern lightwe…
PP/25/03444
2025 Withdrawn
17A Onslow Gardens, London, SW7 3AL
Installation of an Air Source Heat Pump (ASHP) on a raised gantry within southern lightwe…
LB/25/03445
2025 Approved
13 Neville Street, London, SW7 3AR
Replacement of non-original French doors at lower ground closet wing with sliding aluminu…
LB/25/03568
2025 Approved
13 Neville Street, London, SW7 3AR
Replacement of non-original French doors at lower ground closet wing with sliding aluminu…
PP/25/03567
2025 Approved
Flat 7, 24 Onslow Gardens, London, SW7 3AL
Installation of an airbrick within north western fa?ade
LB/25/02564
2025 Withdrawn
17A Onslow Gardens, London
Installation of an air source heat pump (ASHP) at ground floor including the installation…
PP/25/01226
2025 Withdrawn
17A Onslow Gardens, London
Installation of an air source heat pump (ASHP) at ground floor including the installation…
LB/25/01227
2025 Approved
17A Onslow Gardens, London SW7 3AW
Installation of 19 black mono solar panels to roof of site.
PP/25/01228
2025 Approved
17A Onslow Gardens, London SW7 3AW
Installation of 19 black mono solar panels to roof of site.
LB/25/01229
2024 Withdrawn
16 Selwood Terrace, Onslow Gardens, London, SW7 3QG
Part demolition and reconstruction of rear outrigger with lower ground floor level conser…
LB/24/08383
2024 Withdrawn
16 Selwood Terrace, Onslow Gardens, London, SW7 3QG
Part demolition and reconstruction of rear outrigger with lower ground floor level conser…
PP/24/08382
2024 Approved
Flat 7, 35 Onslow Gardens, London, SW7 3PY
Reposition heating boiler and its external flue for second floor flat
LB/24/07343
2024 Approved
Flat 7, 35 Onslow Gardens, London, SW7 3PY
Reposition heating boiler and its external flue for second floor flat
PP/24/07342
2024 Approved
70 Onslow Gardens, London, SW7 3QB
Works comprise replacement of main roofs, including all associated works, following water…
LB/24/07531
2024 Approved
68 Onslow Gardens, London, SW7 3QB
Works comprise replacement of main roofs, including all associated works, following water…
LB/24/07529
2024 Approved
17 Onslow Gardens, LONDON, SW7 3AW
Prune 1x Tree of Heaven at front
ARB/24/06308
2019 Approved
Flat G, 70 Onslow Gardens, London, SW7 3QB
Installation of internal secondary glazing to two master bedroom windows and one window i…
LB/19/06809
2019 Approved
Flat F, 70 Onslow Gardens, LONDON, SW7 3QB
Internal alterations to refurbish self contained flat on second floor (listed building co…
LB/19/05999
2019 Approved
Flat 7, 86 Onslow Gardens, London, SW7 3BS
Internal alterations to flat at third floor level.
LB/19/04220
2019 Approved
Flat 7, 86 Onslow Gardens, London, SW7 3BS
Internal alterations to flat at third floor level.
PP/19/04219
2019 Withdrawn
3 Selwood Place, London, SW7 3QQ
Variation of condition 2 (approved drawings) of planning permission 18/07436 for adjustme…
PP/19/02865
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