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Planning application

3 Northumberland Place London W2 5BS

Awaiting decision Westminster 26/06481/CLOPUD Lawful development

Works: Extension

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

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

As published by the council, reference 26/06481/CLOPUD

Application record

Reference
26/06481/CLOPUD
Category
Lawful development
Status
Pending
Received
22 Sep 2026
Validated
25 Sep 2026
Postcode
W2 5BS

Site history

Applications at this address on the Westminster register

This site has had 6 applications since 2025: 2 approved, 0 refused.

  • 26/05560/CLOPUD Decided

    3 Northumberland Place London W2 5BS

    Painting of the front facade of the building.

    Submitted 14 Aug 2026 Lawful development
  • 26/02986/FULL Awaiting decision

    3 Northumberland Place London W2 5BS

    Variation of condition 1 of planning permission dated 19th June 2025 (RN:25/01772/FULL) for the Erection of a mansard roof extension to a five storey terraced house and installation of solar panels at roof. Namely, to allow the painting of the front façade of the property.

    Submitted 6 May 2026 Full applications
  • 26/00800/TCA Awaiting decision

    3 Northumberland Place London W2 5BS

    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.

    Submitted 10 Feb 2026 Trees
  • 25/07540/ADFULL Granted

    3 Northumberland Place London W2 5BS

    Detailed drawings showing the revised detailed design of dormers, to include slimmer cheeks and roof (elevations at 1:50, plus detailed elevations and sections at 1:10) pursuant to condition 4 of planning permission dated 19th June 2025 (RN:25/01772/FULL)

    Decided 6 Jan 2026 Full applications
  • 25/07538/ADFULL Granted

    3 Northumberland Place London W2 5BS

    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).

    Decided 17 Nov 2025 Full applications

Timeline

Dates from the published record

  1. 22 Sep 2026

    Received by Westminster

  2. 25 Sep 2026

    Validated

    Checked as complete and ready for consideration.

  3. 25 Sep 2026

    Added to PlanIndex

  4. 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.

What happens while it is decided

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided lawful development applications in a median of 108 days. More in our guide to how long planning decisions take.

About lawful development applications

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.

Nearby applications

Within 0.3 miles

  • 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

  • 9 Northumberland Place London W2 5BS

    26/06588/FULL Submitted 25 Sep 2026 50 yards away

    88% historically approved · decision due ~20 Nov

    Erection of a mansard roof extension and solar panels at 10 Northumberland Place with access onto roof terrace at Number 9.

    Awaiting decision Full applications Extension Loft or dormer

In Westminster

  • 26/06431/CLEUD Awaiting decision

    76 Westbourne Park Villas London W2 5EB

    Provision of a sauna building within garden area.

    Received 21 Sep, published by the council 28 Sep 2026 Lawful development
  • 26/06435/CLOPUD Awaiting decision

    Flat 5 19 Buckingham Street London WC2N 6EG

    Replacement of an air conditioning unit to lightwell wall at fourth floor level to north west side of building.

    Received 21 Sep, published by the council 28 Sep 2026 Lawful development
  • 26/06449/CLEUD Awaiting decision

    39 Sutherland Place London W2 5BZ

    Confirmation that the planning permission dated 29 March 2016 (Ref 15/10383/FULL) for Excavation to lower the level of the existing lower ground floor slab and rear garden, erection of rear three storey closet wing and two storey glazed infill extension, erection of mansard roof, and alterations within front garden including excavation to provide a bin store and to extend vault. All works in association with the use of the building as a single family dwelling house was implemented by the carrying out of material operations prior to the expiration of the planning permission.

    Received 21 Sep, published by the council 29 Sep 2026 Lawful development
  • 26/06337/CLOPUD Awaiting decision

    106 Droop Street London W10 4DA

    Installation of solar panels.

    Received 16 Sep, published by the council 23 Sep 2026 Lawful development
  • 26/06338/CLOPUD Decided

    20 Ilbert Street London W10 4QJ

    Installation of solar panels.

    Received 16 Sep, published by the council 23 Sep 2026 Lawful development