Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG Data via plota.co.uk
Proposal
Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames. Data via plota.co.uk
Application progress
Approved on 22 Oct 2026 · Delegated Decision · Last checked 22 Oct 2026
Documents 17
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 8
Application forms 1
Consultation & comments 1
Site constraints 10
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.
Sales history 1
Last sold for £185,000 in July 1995. Flat or maisonette, leasehold.
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 December 2017, the latest held for this property. The building may have changed since. View the certificate
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- NW1 5BG
- Received
- 8 Sept 2026
- Validated
- 8 Sept 2026
- Ward
- Hyde Park
- Case officer
- Show
- Target decision
- 3 Nov 2026
- Decision
- Application Permitted
- Decision date
- 22 Oct 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Peek Architecture Ltd
- Freehold owner
- Show
How this decision compares
Decided in 44 days from validation, 11 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.
43 neighbours consulted · Last counted 22 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15189048
- Planning Portal ref
- PP-15189048
- Comments by
- 21 Oct 2026
- Site or press notice
- 30 Sept 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
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.
Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG
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Freehold owner, on paid plans
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