Devonshire House Mayfair Place London W1J 8AJ

This site has had 6 applications since 2023: 4 approved, 0 refused.

• 26/03963/ADLBC Decided

  Devonshire House Mayfair Place London W1J 8AJ

  Details of facing materials pursuant to condition 3 of listed building consent dated 19 May 2026 (RN: 25/08851/LBC).

  Submitted 16 Jun 2026
• 25/08851/LBC Awaiting decision

  Devonshire House Mayfair Place London W1J 8AJ

  Replacement of existing terrace paving, strip lighting and exit signage as well as alterations to the balustrade fitting system and introduction of two access control bollards.

  Submitted 5 Dec 2025 Heritage and listed buildings
• 25/05178/ADLBC Granted

  Devonshire House Mayfair Place London W1J 8AJ

  Detailed drawings of the new doors pursuant to Condition 2 of listed building consent dated 13th February 2025 (RN:24/06628/LBC)

  Decided 3 Sep 2025 Conditions
• 23/03662/FULL Granted

  Devonshire House Mayfair Place London W1J 8AJ

  Works to the tenth floor terrace to include installation of new timber furniture shed, decking, lighting, planting and new access doors. Internal alterations at ninth and tenth floor levels. (Linked with 23/03663/LBC)

  Decided 18 Jul 2023 Full applications
• 23/03663/LBC Granted

  Devonshire House Mayfair Place London W1J 8AJ

  Works to the tenth floor terrace to include installation of new timber furniture shed, decking, lighting, planting and new access doors. Internal alterations at ninth and tenth floor levels. (Linked with 23/03662/FULL)

  Decided 18 Jul 2023 Heritage and listed buildings

1. 21 Jul 2025

   Received by Westminster

2. 3 Sep 2025

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 3 September 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.

• Second Floor (Excluding North East Part) Devonshire House Mayfair Place London W1J 8AJ

  26/05130/LBC Submitted 30 Jul 2026 50 yards away

  90% historically approved · decision due ~15 Oct

  Installation of two air conditioning condenser units to the second floor lightwell, two internal air conditioning units, and associated pipework. (Linked with 26/05129/FULL)

  Decided Heritage and listed buildings 7 docs

• Devonshire House Mayfair Place London W1J 8AJ

  26/03963/ADLBC Submitted 16 Jun 2026 50 yards away

  89% historically approved · decision due ~11 Aug

  Details of facing materials pursuant to condition 3 of listed building consent dated 19 May 2026 (RN: 25/08851/LBC).

  Decided

• Second Floor (Excluding North East Part) Devonshire House Mayfair Place London W1J 8AJ

  26/05129/FULL Submitted 30 Jul 2026 50 yards away

  88% historically approved · decision due ~15 Oct

  Installation of two air conditioning condenser units to the second floor lightwell, two internal air conditioning units, and associated pipework. (Linked with 26/05130/LBC)

  Decided Full applications

• Devonshire House Mayfair Place London W1J 8AJ

  25/05178/ADLBC Submitted 21 Jul 2025 50 yards away

  Detailed drawings of the new doors pursuant to Condition 2 of listed building consent dated 13th February 2025 (RN:24/06628/LBC)

  Granted Conditions 9 docs

• Devonshire House Mayfair Place London W1J 8AJ

  23/03662/FULL Submitted 1 Jun 2023 50 yards away

  Works to the tenth floor terrace to include installation of new timber furniture shed, decking, lighting, planting and new access doors. Internal alterations at ninth and tenth floor levels. (Linked with 23/03663/LBC)

  Granted Full applications 29 docs
  Small domestic

• Devonshire House Mayfair Place London W1J 8AJ

  23/03663/LBC Submitted 1 Jun 2023 50 yards away

  Works to the tenth floor terrace to include installation of new timber furniture shed, decking, lighting, planting and new access doors. Internal alterations at ninth and tenth floor levels. (Linked with 23/03662/FULL)

  Granted Heritage and listed buildings 23 docs
  Small 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