79 Chester Square London SW1W 9DU Data via plota.co.uk
Proposal
Amendments to planning permission dated 5th January 2023 (RN:) for "Excavation of basement storey beneath main house, demolition and rebuilding of mews house at new height plus the addition of a lower ground floor storey, demolition and rebuilding of main roof plus addition of plant equipment, erection of extension for lift from basement to third floor level, demolition and replacement of interconnecting extension between main and mews house, use of roof of interconnecting extension as a roof terrace, increasing height of boundary shared with 78 Chester Square and other external alterations". NAMELY, amendment to allow the reconfiguration of the approved photovoltaic array (inlcuding changing approved array to one with a lower number of higher performing panels) and the consequent amendment to the wording of condition 10. Data via plota.co.uk
Application progress
Approved on 24 Jul 2026 · Delegated Decision · Last checked 29 Jul 2026
Documents 27
Decision & officer reports 2
Statements & assessments 3
Plans & drawings 18
Application forms 1
Associated applications 9
- AmendmentAmendments to planning permission dated 5th January 2023 (RN) for "Excavation of basement…This application26/04196/NMA
Show 4 more · 4 approved
Conditions 3 discharged
Site constraints 12
Show the other 20 with distances
- 23 m65-76, Chester Square Sw1Grade II
- 28 m1-13, Chester Square Sw1Grade II
- 28 m84-88, Chester Square Sw1Grade II
- 41 m47, Lower Belgrave Street Sw1Grade II
- 42 m22, 22a, 22b and 22d, Ebury Street W1Grade II
- 53 m49-55, Lower Belgrave Street Sw1Grade II
- 62 m8 to 23 Eaton Square including 57 Lower Belgrave StreetGrade II*
- 71 m16-46, Lower Belgrave Street Sw1Grade II
- 72 mThe Plumbers Arms Public HouseGrade II
- 73 m4-12 Lower Belgrave Street and 16 Ebury Street Sw1Grade II
- 86 m1-8 Lygon PlaceGrade II
- 100 m24-32, Eccleston Street Sw1Grade II
- 107 m14-23, Chester Square Sw1Grade II
- 111 m1-7, Eaton Square Sw1Grade II
- 115 m46-63 Chester Square Including No. 39 Eccleston StreetGrade II
- 125 mLow Wall With Four Piers to Lygon PlaceGrade II
- 126 mNos 24 and 24a to 48 (consecutive) including Nos 72 and 72a Elizabeth StreetGrade II*
- 129 m25-33, Eccleston Street Sw1Grade II
- 138 m36-50, Grosvenor Gardens Sw1Grade II
- 140 m2-34, Grosvenor Gardens Sw1Grade II
Checked on 2 November 2026. 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 £13,000,000 in December 2021. Other property, 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
- Non-material amendments
- Postcode
- SW1W 9DU
- Received
- 25 Jun 2026
- Validated
- 25 Jun 2026
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 23 Jul 2026
- Decision
- Application Permitted
- Decision date
- 24 Jul 2026
- Decision level
- Delegated Decision
- Applicant
- Show
How this decision compares
Decided in 29 days from validation, 28 days faster than Westminster's median of 57 for demolitions. Approved, as 90% of demolitions here are.
Plota live figures for demolitions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Consultation & key dates
- Alt. reference
- PP-15019798
- Planning Portal ref
- PP-15019798
- Env. assessment
- No
Historical activity at this location
42 previous applications on record - archival context, not part of the live application.
Previous applications at this address
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.
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79 Chester Square London SW1W 9DU
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Referenced application
Council archive
79 Chester Square London SW1W 9DU
Excavation of new basement beneath existing lower ground floor of the main house; extension of the lower ground floor below the mews house; enclosing lightwell at lower ground floor level; demolishing 1980's connection and replacement with re-positioned link; extension at fourth/roof level; extension at ground to third floor level to accomodate lift; and associated works. (Linked with 22/05928/LBC)
- Received
- 31 Aug 2022
- Outcome
- Pending
79 Chester Square London SW1W 9DU
Excavation of new basement beneath existing lower ground floor of the main house; extension of the lower ground floor below the mews house; enclosing lightwell at lower ground floor level; demolishing 1980's connection and replacement with re-positioned link; extension at fourth/roof level; extension at ground to third floor level to accomodate lift; and associated works. (Linked with 22/05927/FULL)
- Received
- 31 Aug 2022
- Outcome
- Pending
- Type
- Heritage