Flat 1/2, 21 Onslow Gardens, London, SW7 3AL Data via plota.co.uk
Proposal
Internal strip-out and opening-up works (retrospective), with associated conservation repair and reinstatement. Internal alterations and refurbishment, including revised layouts and openings, joinery and decorative scheme, and upgraded building services. Alterations to internal lightwell doors and lower ground rear fenestration. Installation of one AC condenser unit within an acoustic enclosure in the rear lightwell.(Part retrospective) Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision between 16 Nov 2026 and 28 Dec 2026, from Kensington and Chelsea's recent extensions.
Site constraints 9
Show all 33 with distances
- 0 m17a and 18-24, Onslow Gardens Sw7Grade II
- 42 m25-34, Onslow Gardens Sw7Grade II
- 46 m19 and 20, Selwood Terrace Sw7Grade II
- 46 m1-14, NEVILLE TERRACE SW7 (See details for further address information)Grade II
- 49 m35-48, Onslow Gardens Sw7Grade II
- 51 m13-16, Onslow Gardens Sw7Grade II
- 53 m80-92, Onslow Gardens Sw7Grade II
- 53 m17 and 18, Selwood Terrace Sw7Grade II
- 63 m50-78, Onslow Gardens Sw7Grade II
- 63 m16, Selwood Terrace Sw7Grade II
- 64 m1-8, Onslow Gardens Sw7Grade II
- 68 mThe Anglesea Public HouseGrade II
- 71 m9-12, Onslow Gardens Sw7Grade II
- 74 m14-26, Neville Street Sw7Grade II
- 76 m1-13, Selwood Place Sw7Grade II
- 78 m18, Selwood Place Sw7Grade II
- 89 m1-14, NEVILLE STREET SW7 (See details for further address information)Grade II
- 90 mEntrance Arch and Screen Wall on Onslow GardensGrade II
- 91 mCranley GardensGrade II
- 92 m10-14, Selwood Terrace Sw7Grade II
- 93 m1-14, Foulis Terrace 7Grade II
- 98 m11-19, Cranley Place Sw7Grade II
- 99 m49-77, Onslow Gardens Sw7Grade II
- 105 m14-17, Selwood Place Sw7Grade II
- 108 mEntrance Arch From Cranley PlaceGrade II
- 109 m77-109, Onslow Square Sw7Grade II
- 116 m1-9, Selwood TerraceGrade II
- 119 mEntrance Arch From Cranley PlaceGrade II
- 126 m1-10, Cranley Place Sw7Grade II
- 130 mChurch of St Peter (Armenian Church)Grade II*
- 135 m1a and 1-11, Cranley Gardens Sw7Grade II
- 136 m1,1a,1b, 2-9, Elm Place Sw7Grade II
- 137 m10-14, Elm Place Sw7Grade II
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.
Sales history 1
Last sold for £364,645 in January 1999. Flat or maisonette, leasehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in July 2023, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate
Every application in Kensington and Chelsea - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Kensington and Chelsea
- Application type
- Listed Building Consent
- Postcode
- SW7 3AL
- Received
- 14 Sept 2026
- Validated
- 14 Sept 2026
- Ward
- Courtfield
- Case officer
- Show
- Target decision
- 9 Nov 2026
- Applicant
- Show
- Leaseholder
- Show
Decision outlook
Day 35 of the 56-day target. Kensington and Chelsea usually decides extensions by day 83.
Plota live figures for extensions decided by Kensington and Chelsea in the last twelve months, from validation. Kensington and Chelsea decision record →
Consultation & key dates
- Comments by
- 9 Oct 2026
Historical activity at this location
27 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
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%).
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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.
Leaseholders: 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.
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Flat 1/2, 21 Onslow Gardens, London, SW7 3AL
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The consultation period closed on 9 Oct 2026.