3 Blenheim Road London NW8 0LU

This site has had 5 applications since 2026.

• 26/05798/NMA Decided

  3 Blenheim Road London NW8 0LU

  Amendments to planning permission dated 18th January 2024 (RN:22/04886/FULL) for Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations. Namely, minor adjustment to rooflight position.

  Submitted 24 Aug 2026 Amendments
• 26/05589/LBC Decided

  3 Blenheim Road London NW8 0LU

  Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations; Internal alterations, including changes to planform and replacement of fireplace at lower-ground floor level.

  Submitted 17 Aug 2026 Heritage and listed buildings
• 26/03112/ADFULL Awaiting decision

  3 Blenheim Road London NW8 0LU

  Details of all flood resilient and resistant measures shall be submitted; pursuant to condition 5 of planning permission dated 19th January 2024 (RN 22/04886/FULL)

  Submitted 12 May 2026 Full applications
• 26/03113/ADFULL Awaiting decision

  3 Blenheim Road London NW8 0LU

  Details of the ways in which you will protect the trees which you are keeping, as shown on drawing Barrell Plan Ref: 18215-1 pursuant to condition 10 of planning permission dated 18th January 2024 (RN:22/04886/FULL)

  Submitted 12 May 2026 Full applications

1. 26 Aug 2026

   Received by Westminster

2. 1 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 21 October 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 86 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's median decision took 86 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on Westminster's portal will say. Our guide explains the common types.

• 3 Blenheim Road London NW8 0LU

  26/05589/LBC Submitted 17 Aug 2026 50 yards away

  90% historically approved · decision due ~12 Oct

  Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations; Internal alterations, including changes to planform and replacement of fireplace at lower-ground floor level.

  Decided Heritage and listed buildings Extension
  Small domestic

• 3 Blenheim Road London NW8 0LU

  26/05798/NMA Submitted 24 Aug 2026 50 yards away

  93% historically approved · decision due ~19 Oct

  Amendments to planning permission dated 18th January 2024 (RN:22/04886/FULL) for Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations. Namely, minor adjustment to rooflight position.

  Decided Amendments Extension Loft or dormer
  Small domestic

• 10 Blenheim Road London NW8 0LU

  25/07275/ADFULL Submitted 8 Oct 2025 50 yards away

  Details of Code of Construction Practice pursuant to condition 19 of planning permission dated 8th June 2022 (RN:21/05522/FULL)

  Granted Full applications 6 docs

• 9 Blenheim Road London NW8 0LU

  26/01946/ADFULL Submitted 25 Mar 2026 50 yards away

  88% historically approved · decision due ~20 May

  Details of the ways in which you will protect the trees which you are keeping, as shown on drawing 02.010 pursuant to condition 8 of planning permission dated 19th March 2026 (RN:25/08190).

  Awaiting decision Full applications Trees 6 docs

• 4 Blenheim Road London NW8 0LU

  26/01182/TCA Submitted 25 Feb 2026 50 yards away

  100% historically approved · decision due ~22 Apr

  Works: 2 x poplars (rear): crown reduce to previous (most recent) pollard points (at about height of approx. 8m).

  Awaiting decision Trees 6 docs

• 3 Blenheim Road London NW8 0LU

  26/03113/ADFULL Submitted 12 May 2026 50 yards away

  88% historically approved · decision due ~7 Jul

  Details of the ways in which you will protect the trees which you are keeping, as shown on drawing Barrell Plan Ref: 18215-1 pursuant to condition 10 of planning permission dated 18th January 2024 (RN:22/04886/FULL)

  Awaiting decision Full applications Trees 10 docs