9 Northumberland Place London W2 5BS

1. 25 Sep 2026

   Received by Westminster

2. 1 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 20 November 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 73 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 120 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.

• 12 Northumberland Place London W2 5BS

  22/04212/ADFULL Submitted 27 Jun 2022 50 yards away

  Details of construction contract agreed between all land owners and lessees pursuant to condition 7 of planning permission dated 19th March 2021 (RN: 21/00382/FULL).

  Granted Full applications 9 docs

• 3 Northumberland Place London W2 5BS

  25/07538/ADFULL Submitted 17 Oct 2025 50 yards away

  Detailed drawings of new railings, new bin store, new lightwell porch, method statement explaining the measures you will take to protect the trees on and close to the site and details of the foundations of the bin stores pursuant to conditions 4, 5 and 7 of planning permission dated 13th February 2025 (RN:24/07005).

  Granted Full applications Extension Trees 18 docs
  Small domestic

• 3 Northumberland Place London W2 5BS

  26/05560/CLOPUD Submitted 14 Aug 2026 50 yards away

  84% historically approved · decision due ~20 Oct

  Painting of the front facade of the building.

  Decided Lawful development

• 3 Northumberland Place London W2 5BS

  26/00800/TCA Submitted 10 Feb 2026 50 yards away

  100% historically approved · decision due ~7 Apr

  Magnolia growing in the front left hand corner of the front garden of 3 Northumberland Place, tree 1 on the attached plan. Fell, remove stump and main roots. Reasons - poor specimen with low amenity value and no real scope for improvement. To be replaced, together with a replacement for the recently removed cotoneaster (ref 25/03383/TCA) Proposed replacements to be agreed with Westminster, we suggest Japanese maple, silverbell tree or similar small / medium ornamental tree.

  Awaiting decision Trees 7 docs

• 9 - 10 Northumberland Place London W2 5BS

  26/01573/FULL Submitted 11 Mar 2026 50 yards away

  88% historically approved · decision due ~8 May

  Erection of a mansard roof extension and solar panels at no. 10 Northumberland Place

  Awaiting decision Full applications Extension Loft or dormer 7 docs

• 3 Northumberland Place London W2 5BS

  26/06481/CLOPUD Submitted 22 Sep 2026 50 yards away

  84% historically approved · decision due ~20 Nov

  Proposed installation of one air source heat pump on the flat roof of the rear outrigger.

  Awaiting decision Lawful development Extension

• 26/06621/FULL Awaiting decision

  2 Dorset Street London W1U 4EE

  Replacement of four existing external condenser units and four internal air-conditioning units and acoustic enclosure. (Linked with 26/06436/LBC)

  28 Sep 2026 Full applications
• 26/06605/FULL Awaiting decision

  Hertford Court 14 - 15 Hertford Street London W1J 7RP

  Removal of the ground floor access gates and creation of a new facade frontage to create ancillary concierge floorspace.

  Received 28 Sep, published by the council 1 Oct 2026 Full applications
• 26/06615/FULL Awaiting decision

  6 Eccleston Street London SW1W 9LS

  Installation of ceramic tiles to ground floor elevations, awnings to front elevation, new lighting, external CCTV cameras (linked to 26/06616/ADV)

  Received 25 Sep, published by the council 30 Sep 2026 Full applications
• 26/06586/FULL Awaiting decision

  15 Golden Square London W1F 9JG

  Refurbishment of the ground floor reception entrance, including installation of bronze trim to the soffit, fascia and door surround, together with recessed and floor-mounted lighting.

  Received 25 Sep, published by the council 1 Oct 2026 Full applications
• 26/06587/FULL Awaiting decision

  Hide Tower Regency Street London SW1P 4AA

  Facade remediation and recladding works comprising the removal of existing combustible cladding and associated façade elements, and installation of a replacement non-combustible aluminium rainscreen cladding system with associated insulation, cavity barriers and ancillary works to all elevations.

  Received 25 Sep, published by the council 1 Oct 2026 Full applications