12 Chester Street London SW1X 7BB Data via plota.co.uk
Proposal
Replacement of existing rear extension at first, second and third with a new rear extension (first to third floor level) with flat roof. Erection of an extension at rear ground floor level. Removal of the existing kitchen rooflight and extension of existing terrace at first floor level. Replacement of existing windows and French doors with new; and alterations to French door width at rear first floor level. Data via plota.co.uk
Application progress
Approved on 23 Jun 2026 · Delegated Decision · Last checked 7 Jul 2026
Documents 30
Decision & officer reports 2
Statements & assessments 2
Plans & drawings 21
Application forms 1
Site constraints 9
Show the other 29 with distances
- 18 m15-17, Chester Street Sw1Grade II
- 31 m2-7 Chester StreetGrade II
- 32 m19-23, Chapel Street Sw1Grade II
- 33 m18-32, Chester Street Sw1Grade II
- 41 m26, Chapel Street Sw1Grade II
- 44 m27, Chapel Street Sw1Grade II
- 44 m1 AND 2, UPPER BELGRAVE STREET SW1 (See details for further address information)Grade II
- 50 m15-18, Chapel Street Sw1Grade II
- 53 m3, Wilton Mews Sw1Grade II
- 54 m5 Groom Place and stable yardGrade II
- 55 mSeaford House and Gate PiersGrade II*
- 60 m3-11, Upper Belgrave Street Sw1Grade II*
- 62 m13 and 14, Chapel Street Sw1Grade II
- 67 m12, Chapel Street Sw1Grade II
- 72 m28a, Chapel Street Sw1Grade II
- 73 m28-32, Chapel Street Sw1Grade II
- 74 m38-48, Belgrave Square Sw1Grade I
- 82 m33-37, Chapel Street Sw1Grade II
- 91 m18-20, Grosvenor Place Sw1Grade II
- 101 m25-36, Belgrave Square Sw1Grade I
- 101 m17, Grosvenor Place Sw1Grade II
- 103 m4-15, Wilton Street Sw1Grade II
- 107 mNos. 1-31, EATON PLACE; Nos. 17, 18 AND 19 BELGRAVE PLACE AND ADJOINING MEWS ARCHGrade II*
- 113 m1-3, Wilton Street Sw1Grade II
- 121 mNumbers 6 to 14 (Consecutive) Grosvenor Place, 41 Chapel Street and Mews Arch to Halkin StreetGrade II
- 131 m4-34, EATON PLACE SW1 (See details for further address information)Grade II*
- 139 m16-23, Wilton Street Sw1Grade II
- 146 m16a, Wilton Street Sw1Grade II
- 148 m12 and 13, Upper Belgrave Street Sw1Grade II
Checked on 6 October 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.
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
- Listed Building Consent Application
- Postcode
- SW1X 7BB
- Received
- 1 May 2026
- Validated
- 1 May 2026
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 26 Jun 2026
- Decision
- Application Permitted
- Decision date
- 23 Jun 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- BB Partnership Limited
How this decision compares
Decided in 53 days from validation, about the council's usual 55 days. Approved, as 88% 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-14902944
- Planning Portal ref
- PP-14902944
- Comments by
- 10 Jun 2026
- Site or press notice
- 11 May 2026
- Env. assessment
- No
Historical activity at this location
31 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.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
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12 Chester Street London SW1X 7BB
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