79 Chester Square London SW1W 9DU Data via plota.co.uk
Proposal
Detailed drawings and a bio-diversity management plan in relation to the intensive green roof on extension at second floor level pursuant to Condition 9 (partial) of planning permission dated 5th January 2023 (RN: ) Data via plota.co.uk
Application progress
Approved on 28 May 2026 · Delegated Decision · Last checked 20 Jul 2026
Documents 12
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 1
Application forms 1
Other documents 7
Associated applications 7
- ConditionsDetailed drawings and a bio-diversity management plan in relation to the intensive green roof…This application26/02991/ADFULL
Show 5 more · 3 approved, 2 pending
- AmendmentAmendments to planning permission dated 5th January 2023 (RN) for "Excavation of basement…26/04196/NMA
Show 1 more · 1 approved
Show 1 earlier · 1 approved
Site constraints 9
Show the other 16 with distances
- 34 m84-88, Chester Square Sw1Grade II
- 50 m47, Lower Belgrave Street Sw1Grade II
- 55 m1-13, Chester Square Sw1Grade II
- 59 m65-76, Chester Square Sw1Grade II
- 60 m22, 22a, 22b and 22d, Ebury Street W1Grade II
- 64 m49-55, Lower Belgrave Street Sw1Grade II
- 76 mThe Plumbers Arms Public HouseGrade II
- 83 m8 to 23 Eaton Square including 57 Lower Belgrave StreetGrade II*
- 83 m4-12 Lower Belgrave Street and 16 Ebury Street Sw1Grade II
- 86 m16-46, Lower Belgrave Street Sw1Grade II
- 106 m24-32, Eccleston Street Sw1Grade II
- 114 m1-8 Lygon PlaceGrade II
- 125 mLow Wall With Four Piers to Lygon PlaceGrade II
- 135 m14-23, Chester Square Sw1Grade II
- 136 m1-7, Eaton Square Sw1Grade II
- 145 m25-33, Eccleston Street Sw1Grade II
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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Important details
- Council
- Westminster
- Application type
- Approval of Details (Full PP)
- Postcode
- SW1W 9DU
- Received
- 6 May 2026
- Validated
- 6 May 2026
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 1 Jul 2026
- Decision
- Application Permitted
- Decision date
- 28 May 2026
- Decision level
- Delegated Decision
- Applicant
- Show
How this decision compares
Decided in 22 days from validation, 31 days faster than Westminster's median of 53 for extensions. Approved, as 87% of extensions here are.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Consultation & key dates
- Alt. reference
- PP-14900543
- 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.
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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