5 - 7 King Street St James's London SW1Y 6QS

1. 27 Aug 2025

   Received by Westminster

2. 12 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 24 Nov 2025

   Decision issued: Granted subject to conditions

4. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 24 November 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 lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 8 King Street St James's London SW1Y 6QT

  07/06608/ADV Submitted 27 Jul 2007 50 yards away

  Display of 1 x non-illuminated fascia sign above entrance doors on Duke Street elevation.

  Granted Advertising 4 docs

• 8 King Street St James's London SW1Y 6QT

  07/06607/FULL Submitted 27 Jul 2007 50 yards away

  Replacement and upgrading of existing plant at first, second and third floor levels and within existing internal lightwell. Replacement entry doors on Duke Street elevation.

  Granted Full applications 14 docs

• 8 King Street St James's London SW1Y 6QT

  08/05175/FULL Submitted 17 Jun 2008 50 yards away

  Replacement of existing roof mounted plant equipment within internal lightwell, alterations to roof gantries and associated alterations.

  Granted Full applications 13 docs

• Unit 1 Cunard House 15 Regent Street London SW1Y 4LN

  26/06061/LBC Submitted 4 Sep 2026 50 yards away

  90% historically approved · decision due ~30 Oct

  Display of non-illuminated vinyl wrap to shopfront glass from 1 September until 4th December 2026, measuring 3216mm x 2585mm.

  Decided Heritage and listed buildings Windows or glazing

• Unit 1 Cunard House 15 Regent Street London SW1Y 4LN

  26/06062/ADV Submitted 4 Sep 2026 50 yards away

  82% historically approved · decision due ~30 Oct

  Display of non-illuminated vinyl wrap at shopfront glass from 1 September until 4th December 2026, measuring 3216mm x 2585mm.

  Decided Advertising Windows or glazing

• 44 Duke Street St James's London SW1Y 6DD

  07/00981/FULL Submitted 30 Jan 2007 50 yards away

  Change of use of part first and second floors from office (Class B1) to four studio flats (Class C3) at first and second floor level (Land Use swap with 5-7 King Street).

  Withdrawn Full applications New dwelling 6 docs

• 26/07468/CLOPUD Awaiting decision

  14 - 16 Great Portland Street London W1W 8QW

  Confirmation the demolition of the existing outrigger structure at fifth floor level (the Proposed Works) constitutes the lawful commencement of development pursuant to the Permission.

  Received 3 Nov, published by the council 5 Nov 2026 Lawful development
• 26/07423/CLOPUD Awaiting decision

  103 Elgin Avenue London W9 2NP

  Painting of the decorative stonework, window frames and doors on the front elevation and front boundary wall

  Received 2 Nov, published by the council 4 Nov 2026 Lawful development
• 26/07454/CLOPUD Awaiting decision

  10 Stratton Street London W1J 8LG

  Changes to existing windows and doors

  Received 2 Nov, published by the council 5 Nov 2026 Lawful development
• 26/07381/CLEUD Awaiting decision

  Ground Floor Rear Flat 4 Mozart Street London W10 4LA

  Use of the ground floor rear flat as short-term visitor accommodation.

  Received 28 Oct, published by the council 5 Nov 2026 Lawful development
• 26/07339/CLOPUD Awaiting decision

  123 Victoria Street London SW1E 6DE

  Use of part of ground floor reception area within Class E including, but not limited to, a retail café (Class E(a)).

  Received 27 Oct, published by the council 30 Oct 2026 Lawful development