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

This site has had 4 applications since 2026: 2 approved, 0 refused.

• 26/05253/ADLBC Awaiting decision

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

  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]

  Submitted 31 Jul 2026
• 26/00020/FULL Granted

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

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

  Decided 1 Jul 2026 Full applications
• 26/00021/LBC Granted

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

  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)

  Decided 1 Jul 2026 Heritage and listed buildings

1. 31 Jul 2026

   Received by Westminster

2. 5 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 9 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 30 September 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.

• 26/00020/FULL Granted

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

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

  Decided 1 Jul 2026 Full applications
• 26/05253/ADLBC Awaiting decision

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

  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]

  Submitted 31 Jul 2026

1 later application on the register refers to this one:

• 26/05253/ADLBC Awaiting decision

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

  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]

  Submitted 31 Jul 2026

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.

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

  26/06703/FULL Submitted 30 Sep 2026 50 yards away

  88% historically approved · decision due ~25 Nov

  Replacement of second- and third-floor windows with timber-framed double-glazed units, replacement rooflight, and an extension to the third-floor rear dormer and terrace, with new timber French doors.

  Awaiting decision Full applications Extension Loft or dormer +1

• 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

• 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