Flat 10 2 Mansfield Street London W1G 9NF

This site has had 2 applications since 2026.

• 26/01152/LBC Withdrawn

  Flat 10 2 Mansfield Street London W1G 9NF

  Re-location of previously approved external air conditioning unit at roof level. Linked with 26/01151/FULL

  Submitted 24 Feb 2026 Heritage and listed buildings

1. 24 Feb 2026

   Received by Westminster

2. 13 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 8 June 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.

• 26/01152/LBC Withdrawn

  Flat 10 2 Mansfield Street London W1G 9NF

  Re-location of previously approved external air conditioning unit at roof level. Linked with 26/01151/FULL

  Submitted 24 Feb 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 26/01152/LBC Withdrawn

  Flat 10 2 Mansfield Street London W1G 9NF

  Re-location of previously approved external air conditioning unit at roof level. Linked with 26/01151/FULL

  Submitted 24 Feb 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.

• 4 Queen Anne Street London W1G 9LQ

  25/07282/FULL Submitted 8 Oct 2025 50 yards away

  Variaiton of Conditon 1 of planning permission dated 18 November 2024 (RN: 24/05063/FULL) for, 'Installation of two air conditioning units at main roof level with associated pipework on the rear elevation, installation of two grilles on the rear wall in the lightwell at lower ground floor level and internal alterations at lower ground and ground floor levels'; Namely, to amend the location of the two items of plant on the roof in addition to amending the specification of the anti-vibration mounts. (Linked with 25/07252/LBC) (Application under Section 73 of the Act).

  Granted Full applications 26 docs

• 4 Queen Anne Street London W1G 9LQ

  25/07255/FULL Submitted 7 Oct 2025 50 yards away

  Variation of Condition 1 of planning permission dated 22nd November 2024 (RN: 24/05074/FULL) for, 'Installation of one air conditioning unit at main roof level and two grilles within the window in the rear lightwell at ground floor level with associated pipework and internal alterations'; Namely, to allow for repositioning of the plant unit on the roof in addition to providing new higher performance anti-vibration mounts. (Linked with 25/07251/LBC) (Application under Section 73 of the Act).

  Granted Full applications Windows or glazing 29 docs

• 4 Queen Anne Street London W1G 9LQ

  25/07251/LBC Submitted 7 Oct 2025 50 yards away

  Installation of one air conditioning unit at main roof level and two grilles within the window in the rear lightwell at ground floor level with associated pipework and internal alterations. (Linked with 25/07255/FULL)

  Granted Heritage and listed buildings Windows or glazing 24 docs

• 4 Queen Anne Street London W1G 9LQ

  25/07252/LBC Submitted 7 Oct 2025 50 yards away

  Installation of two air conditioning units at main roof level with associated pipework on the rear elevation, installation of two grilles on the rear wall in the lightwell at lower ground floor level and internal alterations at lower ground and ground floor levels. (Linked with 25/07282/FULL)

  Granted Heritage and listed buildings 22 docs

• Flat 16 2 Mansfield Street London W1G 9NF

  22/02222/FULL Submitted 24 Feb 2022 50 yards away

  Replacement windows and door to the rear elevation.

  Granted Full applications Windows or glazing 13 docs

• Flat 10 2 Mansfield Street London W1G 9NF

  26/01152/LBC Submitted 24 Feb 2026 50 yards away

  90% historically approved · decision due ~8 Jun

  Re-location of previously approved external air conditioning unit at roof level. Linked with 26/01151/FULL

  Withdrawn Heritage and listed buildings 14 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