3 Blenheim Road London NW8 0LU

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 60 days over the applications it decided in the last year.

This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

This page mirrors an entry on the statutory planning register that Westminster is required to keep. The published feed for this record does not state which type of application it is, which is common for older entries and for some council systems; the register entry on the council portal will say, alongside the case officer and any consultation dates.

Every planning application follows the same broad path: submission, validation, publicity, then a decision by officers or committee. Our guide to planning application types explains the common types and what each can approve.

• 3 Blenheim Road London NW8 0LU

  26/05589/LBC Submitted 17 Aug 2026 0m 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.

  Awaiting decision Heritage and listed buildings Extension
  Small domestic

• 3 Blenheim Road London NW8 0LU

  26/05798/NMA Submitted 24 Aug 2026 0m away

  92% 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, internal alterations and minor adjustment to rooflight position.

  Awaiting decision Amendments Extension Loft or dormer
  Small domestic

• 10 Blenheim Road London NW8 0LU

  25/07275/ADFULL Submitted 8 Oct 2025 0m 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 0m away

  87% 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 0m 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 0m away

  87% 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