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 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 tree works applications in a median of 49 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

  88% historically approved · decision due ~28 Oct

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

  Decided 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

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

  26/06703/FULL Submitted 30 Sep 2026 100 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 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

• 26/07520/TPO Awaiting decision

  Lords Cricket Ground St John's Wood Road London NW8 8QZ

  2 lime trees located to the west of the Allen Stand and north of Lords Tavern, by the Grace Gate entrance from St John's Wood Road. These trees are noted as T7 and T8 on attached plans and reports. Roots belonging to both trees were severed during excavations for service trenches associated with construction of the Allen Stand on site. Static load tests were carried out to both trees in April 2026, which flagged T7 as having an insufficient safety factor. T7 was therefore recommended for a 3m reduction in height to reduce the risk of failure. Due to T7 and T8 forming a continuous canopy, T8 has also been recommended for the same specification of reduction to prevent exposing its crown to excessive wind loading.

  Received 4 Nov, published by the council 6 Nov 2026 Trees
• 26/07523/TCA Awaiting decision

  Lancaster House Stable Yard Road London SW1A 1BB

  T5 - False Acacia Reduce Crown in Height (by 3m) and Shape (Specify final height and width) Reduce in height by 3m. Tag 1052 T11 Holm Oak Dismantle to ground level Tag 4049

  Received 4 Nov, published by the council 6 Nov 2026 Trees
• 26/07469/TPO Awaiting decision

  48 Craven Hill Gardens London W2 3EA

  T1 London plane: crown reduce back to previous, most recent reduction points (approx. 3-4m).

  Received 3 Nov, published by the council 6 Nov 2026 Trees
• 26/07483/TCA Awaiting decision

  144 Hamilton Terrace London NW8 9UX

  T1: Cherry: To thin by 15% T2: Group Purple Plums: 30% Thin and 1.5m reduction leaving a balanced crown shape. T3: Lime: Pollard to previous reduction points leaving some shortened furnishing growth T4: Japanese Maple: To thin crown density by 30% All works being carried out as general maintenance

  Received 3 Nov, published by the council 6 Nov 2026 Trees
• 26/07484/TCA Awaiting decision

  208 Randolph Avenue London W9 1PF

  T3 ? Sycamore (Acer pseudoplatanus), located in the rear garden of 208 Randolph Avenue, London W9 1PF. Proposed works: Fell T3 Sycamore to ground level and remove the resulting timber and arisings. The tree has been classified as Category U in the Arboricultural Implications Assessment (Report J69.34, dated 12 October 2026) prepared by Broad Oak Tree Consultants. The assessment identifies significant basal decay, a basal cavity, structural deterioration and crown dieback. The report recommends pollarding at approximately 8 metres or felling. Full removal is proposed due to the tree's poor structural condition and associated safety concerns.

  Received 3 Nov, published by the council 6 Nov 2026 Trees