10 Wythburn Court Seymour Place London W1H 7NS

This site has had 3 applications since 2004: 1 approved, 0 refused.

• 04/02286/FULL Granted

  10 Wythburn Court Seymour Place London W1H 7NS

  Erection of roof extension with terrace area (on Seymour Place/ Wythburn Place frontages), to provide additional residential accommodation for Flat 10.

  Decided 22 Jul 2004 Full applications
• 04/02287/CAC Decided

  10 Wythburn Court Seymour Place London W1H 7NS

  Roof extension with terrace area to provide additional residential accommodation for Flat 10.

  Decided 5 Apr 2004 Heritage and listed buildings

1. 27 Apr 2026

   Received by Westminster

2. 8 May 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 3 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 91 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 119 days. More in our guide to how long planning decisions take.

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.

• 16 Wythburn Court Seymour Place London W1H 7NS

  05/06318/ADFULL Submitted 8 Aug 2005 50 yards away

  Details of leadwork pursuant to Condition 5 (2) of planning permission dated 5 April 2005 (RN: 05/00562).

  Granted Full applications 2 docs

• 16 Wythburn Court Seymour Place London W1H 7NS

  05/05885/ADFULL Submitted 22 Jul 2005 50 yards away

  Details of balustrade glazing, colour of rooflight glazing bars, details of new gates to separate walkway and terrace pursuant to Condition 5 (1), (3), (4) of planning permission dated 05 April 2005 (RN: 05/00562).

  Granted Full applications Loft or dormer Windows or glazing 3 docs

• 16 Wythburn Court Seymour Place London W1H 7NS

  05/00562/FULL Submitted 25 Jan 2005 50 yards away

  Retention of modifications to scheme allowed on appeal 16 February 2000 for mansard roof extension to form new accommodation and alteration to access and exterior of existing roof top plant rooms: - namely, alterations to windows and rooflights. [Revised Application]

  Granted Full applications Extension Loft or dormer +1 6 docs

• 17 Wythburn Court Seymour Place London W1H 7NS

  05/00558/FULL Submitted 25 Jan 2005 50 yards away

  Retention of modifications to scheme allowed on appeal 16 February 2000 for mansard roof extension to form new accommodation and alteration to access and exterior of existing roof top plant rooms: - namely alterations to windows, rooflights, decking area and safety barrier. [Revised Application]

  Granted Full applications Extension Loft or dormer +1 5 docs

• 9 Wythburn Court Seymour Place London W1H 7NS

  06/07052/ADFULL Submitted 31 Aug 2006 50 yards away

  Detailed construction drawings at 1:10 pursuant to Condition 2 of planning permission dated 24 August 2006 (RN 06/04697).

  Granted Full applications 3 docs

• 9 Wythburn Court Seymour Place London W1H 7NS

  06/06303/FULL Submitted 7 Aug 2006 50 yards away

  Installation of one air conditioning unit within an enclosure on extended roof terrace at fifth floor roof level.

  Granted Full applications 6 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