Flat 3 6 Upper Belgrave Street London SW1X 8BD Data via plota.co.uk
Proposal
Replacement of the existing condenser and acoustic enclosure with a new unit and enclosure in the same location along with internal alterations to the third and fourth floor maisonette. Data via plota.co.uk
Application progress
Approved on 13 Aug 2026 · Delegated Decision · Last checked 14 Aug 2026
Documents 42
Decision & officer reports 2
Statements & assessments 2
Plans & drawings 25
Application forms 1
Consultation & comments 1
Other documents 11
Associated applications 2
- Replacement of the existing condenser and acoustic enclosure with a new unit and enclosure in the same location along…
Site constraints 9
Show the other 24 with distances
- 28 mNos. 1-31, EATON PLACE; Nos. 17, 18 AND 19 BELGRAVE PLACE AND ADJOINING MEWS ARCHGrade II*
- 31 m3, Wilton Mews Sw1Grade II
- 33 m4-34, EATON PLACE SW1 (See details for further address information)Grade II*
- 42 m18-32, Chester Street Sw1Grade II
- 50 m1 AND 2, UPPER BELGRAVE STREET SW1 (See details for further address information)Grade II
- 55 m4-15, Wilton Street Sw1Grade II
- 65 m15-17, Chester Street Sw1Grade II
- 70 m103-118, Eaton Square Sw1Grade II*
- 71 m12 and 13, Upper Belgrave Street Sw1Grade II
- 74 m25-36, Belgrave Square Sw1Grade I
- 75 m8-14, Chester Street Sw1Grade II
- 78 m16a, Wilton Street Sw1Grade II
- 83 m16-23, Wilton Street Sw1Grade II
- 85 mSeaford House and Gate PiersGrade II*
- 85 m5 Groom Place and stable yardGrade II
- 104 mChurch of St PeterGrade II*
- 106 m27, Chapel Street Sw1Grade II
- 109 m26, Chapel Street Sw1Grade II
- 116 m2-7 Chester StreetGrade II
- 116 m1-3, Wilton Street Sw1Grade II
- 123 m19-23, Chapel Street Sw1Grade II
- 139 m38-48, Belgrave Square Sw1Grade I
- 148 m15-18, Chapel Street Sw1Grade II
- 150 m28a, Chapel Street 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.
Building
From the energy performance certificate lodged in September 2023, the latest held for this property. The building may have changed since. View the certificate
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 8BD
- Received
- 1 Jul 2026
- Validated
- 9 Jul 2026
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 3 Sept 2026
- Decision
- Application Permitted
- Decision date
- 13 Aug 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- ADL Planning Pty Ltd
How this decision compares
Decided in 35 days from validation, 20 days faster than Westminster's median of 55 for extensions. 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 →
Public comments
No public comments yet.
22 neighbours consulted · Last counted 14 Aug 2026
Consultation & key dates
- Alt. reference
- PP-15024475
- Planning Portal ref
- PP-15024475
- Env. assessment
- No
Historical activity at this location
28 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
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.
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Flat 3 6 Upper Belgrave Street London SW1X 8BD
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