6 Seymour Mews London W1H 6BE

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

• 25/09319/NMA Granted

  6 Seymour Mews London W1H 6BE

  Amendments to planning permission dated 5th September 2024 (RN: 24/02777/FULL) for External alterations, extension at ground floor, excavation to provide new basement, and the installation of an air source heat pump; all to enlarge and alter dwellinghouse (Class C3) namely; to alter the colours of the front ground floor facade elements (the main entrance door, garage door, windows, and rendered lintel).

  Decided 3 Mar 2026 Amendments

1. 7 Jul 2025

   Received by Westminster

2. 5 Aug 2025

   Decision issued: Application Permitted

3. 29 Jul 2026

   Added to PlanIndex

Westminster granted permission on 5 August 2025, 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.

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.

• 11 Seymour Mews London W1H 6BE

  06/00799/CAC Submitted 2 Feb 2006 50 yards away

  Substantial demolition behind retained facades.

  Granted Heritage and listed buildings Demolition 3 docs

• 11 Seymour Mews London W1H 6BE

  06/00798/FULL Submitted 2 Feb 2006 50 yards away

  i) External alterations in connection with use of No. 11 as a 2x bedroom house.ii) Demolition behind retained facade of Nos. 15 and 16 to be used for office purposes. (Part of a use swap with 18 and 20 Seymour Place)

  Granted Full applications Demolition 17 docs

• 11 Seymour Mews London W1H 6BE

  05/09325/CAC Submitted 15 Nov 2005 50 yards away

  Demolition of internal partitions, internal staircases in No. 11 and internal party wall of Nos. 15 and 16. Removal of internal fabric to create large open plan area for Nos. 15-16. Refurbishment of roof structure to Nos. 15 and 16.

  Withdrawn Heritage and listed buildings Demolition 4 docs

• 11 Seymour Mews London W1H 6BE

  05/08944/FULL Submitted 2 Nov 2005 50 yards away

  External alterations to 11, 15 and 16 Seymour Mews to provide residential (1x2 bed maisonette) and office (Class B1) accommodation.

  Withdrawn Full applications 15 docs

• 9 Seymour Mews London W1H 6BE

  25/05476/FULL Submitted 5 Aug 2025 50 yards away

  Replacement of existing single glazed timber windows with new double glazed windows.

  Granted Full applications Windows or glazing 8 docs

• 6 Seymour Mews London W1H 6BE

  25/09319/NMA Submitted 23 Dec 2025 50 yards away

  Amendments to planning permission dated 5th September 2024 (RN: 24/02777/FULL) for External alterations, extension at ground floor, excavation to provide new basement, and the installation of an air source heat pump; all to enlarge and alter dwellinghouse (Class C3) namely; to alter the colours of the front ground floor facade elements (the main entrance door, garage door, windows, and rendered lintel).

  Granted Amendments Extension Windows or glazing 9 docs
  Domestic

• 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