Planning application
21 Stafford Place London SW1E 6NP
Works: Extension Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erection of mansard roof extension.
As published by the council, reference 25/08897/FULL
Application record
- Reference
- 25/08897/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 8 Dec 2025
- Validated
- 8 Dec 2025
- Decided
- 17 Apr 2026
- Ward
- St James's
- Decision by
- Complex Delegated Decision
- Postcode
- SW1E 6NP
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025: 1 approved, 0 refused.
-
26/06268/FULL Decided
21 Stafford Place London SW1E 6NP
Variation of Condition 1 of planning permission dated 17 April 2026 (RN 25/08897/FULL) for the erection of a mansard roof extension; Namely, to allow the addition of seven rooflights within the flat roof.
Timeline
Dates from the published record
-
8 Dec 2025
Received by Westminster
-
17 Apr 2026
Decision issued: Application Permitted
-
20 Jul 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
1 later application on the register refers to this one:
-
26/06268/FULL Decided
21 Stafford Place London SW1E 6NP
Variation of Condition 1 of planning permission dated 17 April 2026 (RN 25/08897/FULL) for the erection of a mansard roof extension; Namely, to allow the addition of seven rooflights within the flat roof.
Who's behind it
Company information only, from the register and Companies House
HK HOME ARCHITECTS AND CONSULTANTS LTD Agent, an architecture practice registered in Borehamwood
Active · incorporated 2021 · Borehamwood
21 applications on PlanIndex · across 7 councils · 93% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
33 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this grant of permission means
Westminster granted permission on 17 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
21 Stafford Place London SW1E 6NP
88% historically approved · decision due ~9 Nov
Variation of Condition 1 of planning permission dated 17 April 2026 (RN 25/08897/FULL) for the erection of a mansard roof extension; Namely, to allow the addition of seven rooflights within the flat roof.
Decided Full applications Extension Loft or dormer -
3 Buckingham Mews London SW1E 6NR
Installation of solar panels to existing loft roof.
Withdrawn Lawful development 12 docs -
5 Buckingham Mews London SW1E 6NR
88% historically approved · decision due ~7 Jul
Erection of mansard roof extension, external alterations, replacement windows, and conversion of garage to study room.
Awaiting decision Full applications Extension Loft or dormer +1 17 docs -
6 Buckingham Mews London SW1E 6NR
Amendments to planning permission dated 12th December 2022 (RN:22/03987/FULL) for the conversion of ground floor garage to habitable accommodation and erection of mansard extension for use in connection with the existing first floor flat (Unit 8); and extension to the rear first floor to existing flat, Unit 2 [Site includes rear of 25-27 Catherine Place] namely; to extend the width of the flat roof to the edge of the building.
Refused Amendments Extension Loft or dormer 15 docs -
3 Buckingham Mews London SW1E 6NR
89% historically approved · decision due ~2 Jun
Installation of solar panels to existing loft roof.
Awaiting decision 15 docs -
4 Buckingham Mews London SW1E 6NR
88% historically approved · decision due ~30 Oct
Erection of a mansard roof extension.
Decided Full applications Extension Loft or dormer 16 docs
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