Second Floor And Third Floor Maisonette 170 Sutherland Avenue London W9 1HR

1. 30 Sep 2026

   Received by Westminster

2. 6 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 25 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 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 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.

• Flat 5 Merchant House 184 - 186 Sutherland Avenue London W9 1HR

  26/05253/ADLBC Submitted 31 Jul 2026 50 yards away

  89% historically approved · decision due ~30 Sep

  Details of revised design and materials to rear extension pursuant to condition 3 of listed building consent dated 23 June 2026 (RN: 26/00021/LBC) [Linked to 26/05197/ADFULL]

  Awaiting decision Extension

• Flat 5 Merchant House 184 - 186 Sutherland Avenue London W9 1HR

  26/05197/ADFULL Submitted 31 Jul 2026 50 yards away

  89% historically approved · decision due ~30 Sep

  Details of revised design and materials to rear extension pursuant to condition 4 of planning permission dated 23 June 2026 (RN: 26/00020/FULL) [Linked to 26/05253/ADLBC]

  Awaiting decision Extension

• Basement And Ground Floor Maisonette 164 Sutherland Avenue London W9 1HR

  26/04794/TCA Submitted 17 Jul 2026 50 yards away

  100% historically approved · decision due ~12 Oct

  1 x Magnolia (rear): reduce height by approximately 2.5m and reduce sides by up to 2m, to form a balanced canopy outline.

  Decided Trees

• Flat 5 Merchant House 184 - 186 Sutherland Avenue London W9 1HR

  26/00020/FULL Submitted 5 Jan 2026 50 yards away

  Enclosure of an existing roof terrace with a single storey extension to rear first floor level. (Linked with 26/00021/LBC)

  Granted Full applications Extension 18 docs
  Small domestic

• Flat 5 Merchant House 184 - 186 Sutherland Avenue London W9 1HR

  26/00021/LBC Submitted 5 Jan 2026 50 yards away

  Enclosure of an existing roof terrace with a single storey extension to rear first floor level and associated internal alterations (Linked to 26/00020/FULL)

  Granted Heritage and listed buildings Extension 15 docs
  Small domestic

• 21 Lauderdale Mansions Lauderdale Road London W9 1LX

  26/04501/TCA Submitted 6 Jul 2026 100 yards away

  100% historically approved · decision due ~31 Aug

  Ash Tree: Remove. Tree is infected with Inonotus hispidus fungus and has become dangerous (reason updated to Inonotus hispidus 09/07/2026)

  Awaiting decision Trees 6 docs

• 26/05984/FULL Decided

  41 Sutherland Street London SW1V 4JX

  Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

  Received 2 Sep, published by the council 11 Sep 2026 Full applications
• 26/06134/FULL Decided

  Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

  Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

  Received 8 Sep, published by the council 15 Sep 2026 Full applications
• 26/07258/FULL Awaiting decision

  16A Croxley Road London W9 3HL

  Installation of air to air heat pumps to offices and bedrooms.

  Received 22 Oct, published by the council 23 Oct 2026 Full applications
• 26/07193/FULL Awaiting decision

  98 Victoria Street London SW1E 5JL

  Shopfront alterations. (Linked with 26/07194/ADV)

  Received 21 Oct, published by the council 22 Oct 2026 Full applications
• 26/07187/FULL Awaiting decision

  Ground Floor Flat 151 Portnall Road London W9 3BN

  Erection of a single storey rear extension.

  Received 21 Oct, published by the council 22 Oct 2026 Full applications