3 Blenheim Road London NW8 0LU

This site has had 5 applications since 2026.

• 26/05863/ADFULL Awaiting decision

  3 Blenheim Road London NW8 0LU

  Details of Trees pursuant to Condition 10 of planning permission 18 January 2024 (RN:22/04886/FULL)

  Submitted 26 Aug 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
• 26/03113/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. 12 May 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 7 July 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.

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.

• 1 Blenheim Road London NW8 0LU

  25/08424/TCA Submitted 18 Nov 2025 50 yards away

  1 x Olive (T5, front): reduce all round 1m to shape.

  Granted Trees 4 docs

• 1 Blenheim Road London NW8 0LU

  25/09381/TPO Submitted 18 Nov 2025 50 yards away

  4 x lime (G1 & T3): crown reduce to previous, most recent reduction points, retaining shortened furnishing growth and at least 50% of fine branch structure for crown continuity. 1 x horse chestnut (T2): crown reduce to previous, most recent reduction points, retaining furnishing growth.

  Granted Trees 4 docs

• 28 Blenheim Road London NW8 0LX

  26/02094/LBC Submitted 20 Mar 2026 50 yards away

  90% historically approved · decision due ~2 Jun

  Variation of condition 4 and 5 of listed building dated 12th September 2024 (RN:24/04917/LBC) for the Demolition of existing rear conservatory and erection of a single storey rear extension, installation of air-conditioning unit behind front parapet, installation of glazed balustrade, alterations to windows and doors including new Juliet balcony to rear, installation of rooflights. Internal alterations including the removal and addition of partitions. Namely, to remove condition 4 and 5.

  Awaiting decision Heritage and listed buildings Extension Loft or dormer +2 16 docs
  Small domestic

• 28 Blenheim Road London NW8 0LX

  26/01830/FULL Submitted 20 Mar 2026 50 yards away

  88% historically approved · decision due ~2 Jun

  Variation of condition 1 (approved drawings ) and removal of condition 4 (design) of planning permission dated 12th September 2024 (RN:24/04916/FULL) for the Demolition of existing rear conservatory and erection of a single storey rear extension, installation of air-conditioning unit behind front parapet, installation of glazed balustrade, alterations to windows and doors including new Juliet balcony to rear, installation of rooflights. Internal alterations including the removal and addition of partitions. Namely, internal alterations to allow for a larger utility, nannys bedroom, and shower room at lower ground floor level, and relocation of the kitchen to the raised ground floor and to remove the requirement under condition 4 for the front lightwell balustrade to be traditional cast iron railings caulked into a masonry plinth) (Linked with 26/02271/LBC)

  Awaiting decision Full applications Extension Loft or dormer +2 18 docs
  Small domestic

• 29 Blenheim Terrace London NW8 0EH

  25/06020/TDD Submitted 22 Aug 2025 50 yards away

  1 x olive: fell

  Decided Trees

• 30 Blenheim Road London NW8 0LX

  25/08213/ADFULL Submitted 11 Nov 2025 50 yards away

  Details of arboricultural impact assessment and Method Statement pursuant to condition 3 of planning permission dated 08 October 2025 (RN: 25/03529/FULL).

  Granted Full applications 9 docs

• 26/06234/FULL Decided

  40 Grosvenor Place London SW1X 7HJ

  Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

  Received 11 Sep, published by the council 18 Sep 2026 Full applications
• 26/06015/FULL Decided

  129 Saltram Crescent London W9 3JT

  Erection of a two-storey rear extension.

  Received 3 Sep, published by the council 11 Sep 2026 Full applications
• 26/07382/FULL Awaiting decision

  90 Gloucester Place London W1U 6HS

  Use of the building as an embassy (sui generis)

  Received 28 Oct, published by the council 2 Nov 2026 Full applications
• 26/07363/FULL Awaiting decision

  36 Kilravock Street London W10 4HX

  Demolition of existing rear/side extension and construction of a new extension together with new glazing and doors, and changing the existing rooflights to the rear roof slope with new rooflights.

  Received 28 Oct, published by the council 2 Nov 2026 Full applications
• 26/07371/FULL Awaiting decision

  8A Randolph Road London W9 1AN

  Amalgamation of two residential units with internal refurbishment and reconfiguration. (Linked with 26/07372/LBC)

  Received 28 Oct, published by the council 2 Nov 2026 Full applications