23 Old Queen Street London SW1H 9JA Data via plota.co.uk
Proposal
Erection of conservatory structure at rear first-floor level. Data via plota.co.uk
Application progress
Approved on 18 Feb 2026 · Delegated Decision · Last checked 19 Oct 2026
Documents 16
Decision & officer reports 2
Statements & assessments 2
Plans & drawings 5
Application forms 1
Consultation & comments 1
Other documents 5
Site constraints 13
Show all 20 with distances
- 17 m24, Old Queen Street Sw1Grade II
- 17 m20, Old Queen Street Sw1Grade II
- 22 m26 and 28, Old Queen Street Sw1Grade II
- 31 m9 and 11, Old Queen Street Sw1Grade II
- 32 mAbbey BuildingsGrade II
- 34 m30 and 32, Old Queen Street Sw1Grade II
- 47 m34, Old Queen Street Sw1Grade II
- 55 mMethodist Central Hall, WestminsterGrade II*
- 56 m43, Old Queen Street Sw1Grade II
- 64 mCockpit Steps (Next to Number 38) With Flank Walls and Mounted LanternsGrade II
- 66 m6 Lampstandards Numbered 1-5 (Consecutive) and 8Grade II
- 68 m2, Queen Anne's Gate Sw1Grade II
- 75 m6-12, Queen Anne's Gate Sw1Grade II*
- 86 mStoreys Gate LodgeGrade II
- 87 m1-3 Queen Anne's GateGrade II
- 91 mThe Institution of Civil EngineersGrade II
- 107 mNos. 14-22, 22A and 24, QUEEN ANNE'S GATEGrade I
- 115 mNew Government Offices (HM Treasury) and archway link with Foreign Office at east end of King Charles StreetGrade II*
- 124 mLamp Standard Numbered 1Grade II
- 126 m5-13, Queen Anne's Gate Sw1Grade I
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 2
Last sold for £4,050,000 in June 2024. Other property, freehold.
More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in April 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
- SW1H 9JA
- Received
- 22 Sept 2025
- Validated
- 22 Sept 2025
- Ward
- St James's
- Case officer
- Show
- Target decision
- 18 Feb 2026
- Decision
- Application Permitted
- Decision date
- 18 Feb 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Crawford Architects
How this decision compares
Decided in 149 days from validation, 94 days slower 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.
70 neighbours consulted · Last counted 19 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14351363
- Planning Portal ref
- PP-14351363
- Comments by
- 29 Oct 2025
- Site or press notice
- 8 Oct 2025
- Env. assessment
- No
Historical activity at this location
27 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.
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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23 Old Queen Street London SW1H 9JA
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