21 Stafford Place London SW1E 6NP

This site has had 2 applications since 2025: 1 approved, 0 refused.

• 25/08897/FULL Granted

  21 Stafford Place London SW1E 6NP

  Erection of mansard roof extension.

  Decided 17 Apr 2026 Full applications

1. 14 Sep 2026

   Received by Westminster

2. 22 Sep 2026

   Added to PlanIndex

3. 29 Oct 2026

   Status changed to Decided

   Previously Pending.

• 25/08897/FULL Granted

  21 Stafford Place London SW1E 6NP

  Erection of mansard roof extension.

  Decided 17 Apr 2026 Full applications

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

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.

• 21 Stafford Place London SW1E 6NP

  25/08897/FULL Submitted 8 Dec 2025 50 yards away

  Erection of mansard roof extension.

  Granted Full applications Extension Loft or dormer 33 docs

• 3 Buckingham Mews London SW1E 6NR

  26/00159/CLOPUD Submitted 13 Jan 2026 50 yards away

  Installation of solar panels to existing loft roof.

  Withdrawn Lawful development 12 docs

• 5 Buckingham Mews London SW1E 6NR

  26/02964/FULL Submitted 6 May 2026 50 yards away

  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

  23/03588/NMA Submitted 28 May 2023 50 yards away

  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

  26/02298/PASPV Submitted 7 Apr 2026 50 yards away

  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

  26/05833/FULL Submitted 25 Aug 2026 50 yards away

  88% historically approved · decision due ~30 Oct

  Erection of a mansard roof extension.

  Decided Full applications Extension Loft or dormer 16 docs

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications