9 Weymouth Mews London W1G 7EA

This site has had 2 applications since 2026.

• 26/07209/LBC Awaiting decision

  9 Weymouth Mews London W1G 7EA

  Formation of a new internal staircase connecting the rear part basement of 43 Portland Place to 9 Weymouth Mews; construction of a separating wall, alterations to the rear lightwell elevation and associated internal works. (Linked to 26/07208/FULL)

  Submitted 21 Oct 2026 Heritage and listed buildings

1. 21 Oct 2026

   Received by Westminster

2. 27 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 16 December 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.

• 26/07209/LBC Awaiting decision

  9 Weymouth Mews London W1G 7EA

  Formation of a new internal staircase connecting the rear part basement of 43 Portland Place to 9 Weymouth Mews; construction of a separating wall, alterations to the rear lightwell elevation and associated internal works. (Linked to 26/07208/FULL)

  Submitted 21 Oct 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 26/07209/LBC Awaiting decision

  9 Weymouth Mews London W1G 7EA

  Formation of a new internal staircase connecting the rear part basement of 43 Portland Place to 9 Weymouth Mews; construction of a separating wall, alterations to the rear lightwell elevation and associated internal works. (Linked to 26/07208/FULL)

  Submitted 21 Oct 2026 Heritage and listed buildings

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.

• 9 Weymouth Mews London W1G 7EA

  26/07209/LBC Submitted 21 Oct 2026 50 yards away

  90% historically approved · decision due ~16 Dec

  Formation of a new internal staircase connecting the rear part basement of 43 Portland Place to 9 Weymouth Mews; construction of a separating wall, alterations to the rear lightwell elevation and associated internal works. (Linked to 26/07208/FULL)

  Awaiting decision Heritage and listed buildings

• 22 Weymouth Street London W1G 7BN

  23/08952/ADLBC Submitted 29 Dec 2023 50 yards away

  Details of all works for restoration of the library pursuant to Condition 4 of listed building consent dated 12 September 2023 (RN: 23/03767/LBC).

  Granted Conditions 9 docs

• 22 Weymouth Street London W1G 7BN

  23/07182/ADLBC Submitted 16 Oct 2023 50 yards away

  Details of all works for restoration of the library pursuant to Condition 4 of listed building consent dated 12 September 2023 (RN: 23/03767/LBC)

  Refused Conditions 8 docs

• 43 Weymouth Mews London W1G 7EQ

  26/00547/FULL Submitted 30 Jan 2026 50 yards away

  88% historically approved · decision due ~27 Mar

  Retention of one retractable awning and installation of one additional retractable awning at ground floor level to The Jackalope Public House.

  Awaiting decision Full applications 11 docs

• 43 Weymouth Mews London W1G 7EQ

  26/00548/LBC Submitted 30 Jan 2026 50 yards away

  90% historically approved · decision due ~27 Mar

  Retention of one retractable awning and installation of one additional retractable awning at ground floor level to The Jackalope Public House.

  Awaiting decision Heritage and listed buildings 6 docs

• Basement East And Ground Floor And First Floor 33 Weymouth Street London W1G 7BY

  26/07202/LBC Submitted 21 Oct 2026 50 yards away

  90% historically approved · decision due ~16 Dec

  Replacement of 13 doorsets with fire doors.

  Awaiting decision Heritage and listed buildings

• 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