15 Chesham Mews London SW1X 8HS Data via plota.co.uk
Proposal
Erection of a single-storey conservatory at ground floor level incorporating a retractable louvred roof and glazed sliding doors. Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. Plota predicts a decision between 20 Nov 2026 and 29 Nov 2026, from Westminster's recent extensions.
Documents 22
Statements & assessments 5
Plans & drawings 8
Application forms 1
Other documents 8
Site constraints 6
Show the other 28 with distances
- 38 mThe Star TavernGrade II
- 51 m4, Halkin Place Sw1Grade II
- 51 mMews Arch Adjoining West of Numbers 7 and 8Grade II
- 53 m3, Halkin Place Sw1Grade II
- 56 m15,16 and 17, Chesham Place Sw1Grade II
- 62 mMews Arch to Southern End of Belgrave Mews WestGrade II
- 64 m42, 43 and 44, Lowndes Street Sw1Grade II
- 76 m1, Halkin Place Sw1Grade II
- 80 m9-11, HALKIN PLACE SW1 (See details for further address information)Grade II
- 81 m4-6, West Halkin Street Sw1Grade II
- 95 m13-23, Belgrave Square Sw1Grade I
- 121 m2-12 Halkin Arcade and 27 and 28 Motcomb Street and 11a West Halkin StreetGrade II
- 121 m11, West Halkin StreetGrade II
- 121 m21-27, Cadogan Place Sw1Grade II
- 122 m14, 15 and 16, West Halkin StreetGrade II
- 123 m38, Chesham Place Sw1Grade II
- 123 m29-37 Chesham PlaceGrade II
- 126 m12A AND 14, LOWNDES STREET SW1 (See details for further address information)Grade II
- 126 m12, Belgrave Square Sw1Grade I
- 129 m15 and 17, Pont Street Sw1Grade II
- 133 mRailings Gates and Gate Piers to Number 12Grade II*
- 138 mK6 Telephone Kiosk Outside Number 27Grade II
- 140 m1-8, Motcomb Street Sw1Grade II
- 142 mK6 Telephone Kiosk Outside Number 28Grade II
- 144 m28-33, Cadogan Place Sw1Grade II
- 144 mLowndes HouseGrade II
- 146 m26,27 and 28, Chesham Place Sw1Grade II
- 147 mRailings and Gatepiers Gates to Number 24Grade II*
Checked on 2 October 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.
Sales history 2
Last sold for £820,000 in June 2000. Terraced house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- SW1X 8HS
- Received
- 22 Sept 2026
- Validated
- 30 Sept 2026
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 25 Nov 2026
- Applicant
- Show
- Agent
- J Banks
- Freehold owner
- Show
Decision outlook
Day 4 of the 56-day target. Westminster usually decides extensions by day 55.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
Last counted 2 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15239525
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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.
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15 Chesham Mews London SW1X 8HS
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Freehold owner, on paid plans
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