15 Formosa Street London W9 2JS

1. 12 Feb 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 9 April 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.

• 63A Warwick Avenue London W9 2PR

  25/06776/FULL Submitted 22 Sep 2025 50 yards away

  Creation of opening at lower ground floor with insertion of French doors. (Linked with 25/06777/LBC)

  Granted Full applications Windows or glazing 27 docs

• 63A Warwick Avenue London W9 2PR

  25/06777/LBC Submitted 22 Sep 2025 50 yards away

  Creation of opening at lower ground floor with insertion of French doors. (Linked with 25/06776/FULL)

  Granted Heritage and listed buildings Windows or glazing 24 docs

• 55A Warwick Avenue London W9 2PR

  26/03191/LBC Submitted 14 May 2026 50 yards away

  90% historically approved · decision due ~14 Jul

  Replace existing patio door and window assembly with double glazed timber French doors to the rear. (Linked with 26/03190/FULL)

  Awaiting decision Heritage and listed buildings Windows or glazing 2 docs

• 55A Warwick Avenue London W9 2PR

  26/03190/FULL Submitted 14 May 2026 50 yards away

  87% historically approved · decision due ~14 Jul

  Replace existing patio door and window assembly with double glazed timber French doors to the rear. (Linked with 26/03191/LBC)

  Awaiting decision Full applications Windows or glazing 12 docs

• Flat 1 12 Bristol Gardens London W9 2JG

  26/05689/FULL Submitted 19 Aug 2026 50 yards away

  87% historically approved · decision due ~22 Oct

  Demolition of an existing conservatory at the rear at lower ground level and erection of single storey rear extension.

  Awaiting decision Full applications Extension Demolition 11 docs
  Small domestic

• 51 Warwick Avenue London W9 2PR

  25/06333/LBC Submitted 5 Sep 2025 100 yards away

  Installation of mastic asphalt upstands to the external wall / staircase junctions from street level down to basement flat 51A.

  Granted Heritage and listed buildings 12 docs

• 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