24 Castellain Road London W9 1EZ Data via plota.co.uk
Proposal
Use of part of the existing main flat roof as a private residential roof terrace; installation of black painted metal balustrading/railings; provision of safe access to the roof terrace via a sliding rooflight; installation of an Air Source Heat Pump (ASHP) at roof terrace level; construction of enlarged dormer and a terrace the rear of the 3rd floor; and associated works. Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision between 5 Nov 2026 and 14 Nov 2026, from Westminster's recent extensions.
Documents 8
Statements & assessments 2
Plans & drawings 3
Application forms 1
Site constraints 7
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.
Building
From the energy performance certificate lodged in October 2025, 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
- W9 1EZ
- Received
- 9 Sept 2026
- Validated
- 15 Sept 2026
- Ward
- Little Venice
- Case officer
- Show
- Target decision
- 10 Nov 2026
- Applicant
- Show
- Agent
- Crawford and Gray Architects Ltd
Decision outlook
Day 24 of the 56-day target. Westminster usually decides extensions by day 55.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
20 neighbours consulted · Last counted 4 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15213186
- Planning Portal ref
- PP-15213186
- Comments by
- 14 Oct 2026
- Site or press notice
- 23 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.
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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24 Castellain Road London W9 1EZ
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Comments are open until 14 Oct 2026