21 Lauderdale Mansions Lauderdale Road London W9 1LX

1. 6 Jul 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 31 August 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 65 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 tree works applications in a median of 39 days. More in our guide to how long planning decisions take.

Applications for works to trees cover protected trees: consent under a tree preservation order, or six weeks notice for trees in a conservation area. More in our guide to planning application types.

• 38 Lauderdale Mansions Lauderdale Road London W9 1NE

  26/06017/FULL Submitted 2 Sep 2026 50 yards away

  87% historically approved · decision due ~28 Oct

  Installation of an external air conditioning unit / Heat Pump at roof level.

  Awaiting decision Full applications

• 18 Lauderdale Mansions Lauderdale Road London W9 1NE

  25/06060/FULL Submitted 26 Aug 2025 50 yards away

  Part demolition of existing water tank room; demolition of existing chimney; demolition of one of the rear roof slopes; extension of existing roof terrace to fill space of partially demolished communal water tank room, and demolished rear roof slope; introduction of new larger automated accessible rooflight roof terrace access; installation of double glazed windows.

  Granted Full applications Extension Loft or dormer +2 30 docs

• 4 Biddulph Road London W9 1JB

  25/07165/FULL Submitted 3 Oct 2025 100 yards away

  Variation of condition 1 of planning permission dated 5th June 2025 (RN 25/01845/FULL) for the Erection of rear extensions at ground and first floor levels, single storey side extension at ground floor level, and rear roof dormer; Excavation to extend existing basement level; installation of rooflights; Alterations to windows and doors; Creation of bin store to front garden; Landscaping works; and associated external alterations. NAMELY, amendments to the front and rear fenestration; new window to rear first floor; amendment to the dormer position; amendment to rooflights; extension of the rear gable end wall at ground and first floor levels; and a reduction of the side extension footprint to the front.

  Granted Full applications Extension Loft or dormer +1 18 docs
  Small domestic

• 4 Biddulph Road London W9 1JB

  25/08498/FULL Submitted 20 Nov 2025 100 yards away

  Erection of rear extensions at ground and first floor levels, single storey side extension at ground floor level, and rear roof dormer; Excavation to extend existing basement level with associated lightwells to front and rooflights to rear garden; installation of rooflights; Alterations to windows and doors; Creation of bin store to front garden; Landscaping works; provision of attenuation tank under part of front garden; and associated external alterations.

  Granted Full applications Extension Loft or dormer +1 35 docs
  Small domestic

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

  26/05253/ADLBC Submitted 31 Jul 2026 100 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 100 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

• 26/06333/TCA Awaiting decision

  Basement 17 Claverton Street London SW1V 3AY

  Removal of an overgrown and poor specimen Leyland cypress tree in a confined space in the rear garden of 17 Claverton Street, Sw1v 3AY. We wish to remove this tree and replace it with a semi mature Amelanchier Lamarckii which is more appropriate for the space.

  Received 16 Sep, published by the council 17 Sep 2026 Trees
• 26/06346/TPO Awaiting decision

  Crown Court 123 Park Road London NW8 7JH

  Front T1 Lime x 1 (Tilia spp) This 12m triple stem mature lime tree has previously been reduced, its cyclical prune is now due. The lateral growth is touching the windows and hangs low over the road. Suggested work: - crown reduction - reduce height 2m back to previous reduction points - reduce the lateral growth 2-2.5m back to previous reduction points, leaving furnishing growth - retain 50% of internal fine branch structure Front T2 Lime x 1 (Tilia spp) This 12m triple stem mature lime tree has previously been reduced, its cyclical prune is now due. The lateral growth is touching the windows and hangs low over the road. Suggested work: - crown reduction - reduce height 2m back to previous reduction points - reduce the lateral growth 2-2.5m back to previous reduction points, leaving furnishing growth - retain 50% of internal fine branch structure Front T3 London Plane x 1 (Platanus x hispanica) This 16m mature London plane has previously been pollarded, its cyclical prune is now due. Regrowth is touching the building and encroaching upon the balconies. Suggested work:- reduce all round 2-3m back to previous

  Received 16 Sep, published by the council 17 Sep 2026 Trees
• 26/06307/TCA Awaiting decision

  140 Loudoun Road London NW8 0ND

  T1 Acer reduce by cira 1.5m to suitable pruning points T2 Mature apple tree - Crown lift to 2.5 metres from the ground and cut back from the public infrastructure. T3 Magnolia grandiflora - reduce by 1.5m and cut back from building creating a clearance of 2m T4 - Apple Tree - Remove deadwood and reduce crown by 1m Reason for work: General tree maintenance

  Received 15 Sep, published by the council 17 Sep 2026 Trees
• 26/06302/TCA Awaiting decision

  Old Admiralty Building Spring Gardens London SW1A 2AH

  fell to 50mm from ground level Cherry trees in pots in courtyard (G1 - trees have extensive damage to main stems and crown)

  Received 15 Sep, published by the council 17 Sep 2026 Trees
• 26/06282/TCA Awaiting decision

  13 Randolph Crescent London W9 1DP

  T4 - Reduce magnolia crown by 0.5?1m and thin by 10-15% all around, and remove any deadwood whilst retaining furnishing growth. This is to allow more light through the canopy and maintain the crown at a manageable size.

  Received 14 Sep, published by the council 17 Sep 2026 Trees