54 St Marys Crescent, Isleworth, TW7 4NA

1. 17 Aug 2026

   Received by Hounslow

2. 26 Aug 2026

   Added to PlanIndex

3. 27 Sep 2026

   Status changed to REGISTERED: Under Assessment

   Previously REGISTERED: Under Consultation.

4. Decision

   Awaiting decision

   Decision expected by 12 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Hounslow took a median of 56 days over the applications it decided in the last year.

This application is with Hounslow for determination, against a statutory target of eight weeks. Over the last year Hounslow decided householder applications in a median of 63 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 58 ST MARYS CRESCENT, ISLEWORTH, TW7 4NA

  P/2021/3034 Submitted 26 Jul 2021 50 yards away

  T1. Eucalyptus - Reduce three lowest limbs overhanging shed back to the boundary line. T2. Holly - Reduce all overhanging lateral growth back to the boundary line.

  Granted Trees 4 docs
  Small domestic

• 48 ST MARYS CRESCENT, ISLEWORTH, TW7 4NA

  P/2023/0334 Submitted 2 Feb 2023 50 yards away

  Works to four trees within a conservation area; Reduction of Oak (T1) by 15% in total height and 30% lateral reduction, 10% lateral reduction of Oak (T2), reduction of Sycamore (T3) by 15% in height and 30% lateral reduction, and reduction of Sycamore (4) by 5% in height anf 15% lateral reduction.

  Granted Trees 5 docs

• 48 St Marys Crescent, Isleworth, TW7 4NA

  P/2025/0719 Submitted 7 Mar 2025 50 yards away

  Certificate of lawfulness proposed for the installation of solar panels to the front and side of roof of the house.

  Withdrawn Lawful development 4 docs

• 40 St Marys Crescent, Isleworth, TW7 4NA

  P/2026/0242 Submitted 26 Jan 2026 100 yards away

  Works to trees in a Conservation Area. Cypress (T1). Reduce branches overhanging boundary fence line by up to 3 metres. Cypress (T2). Reduce branches overhanging boundary fence line by up to 4 metres.

  Granted Trees 4 docs
  Small domestic

• 38 St Marys Crescent, Isleworth, TW7 4NA

  P/2025/3827 Submitted 2 Jan 2026 100 yards away

  T1. Hornbeam. Crown lift by removing low branches to 5 metres. Cut back overhang to lawn area by up to 3 metres to reduce overhang and shading. T2. Hawthorn. Crown lift by removing low branches to 4 metres. Cut back overhang to lawn area by up to 2 metres to reduce overhang and shading and balance asymmetric crown. T3. Yew. Fell to ground level. T4. Sycamore. Crown lift by removing low branches to 5 metres (retaining larger southern limb of approximately 160mm diameter and growing towards pergola). Remove crossing branches. Cut back upper crown overhang to pathway by up to 2.5 metres.

  Granted Trees 5 docs

• 127 Ridgeway Road North, Isleworth, TW7 5LX

  P/2026/2386 Submitted 18 Aug 2026 100 yards away

  Erection of a first floor side and a two storey rear extension following demolition of two storey rear extension and conservatory, erection of a front porch and replacement of front elevation windows and dormers to the house.

  Granted Householder Extension Loft or dormer +2 28 docs
  Small domestic

• P/2026/2304 Granted

  18 Clifden Road, Brentford, TW8 0PF

  Erection of a side and rear extensions.

  Received 7 Aug, published by the council 12 Aug 2026 Householder
• P/2026/2804 Awaiting decision

  128 Durham Road, Feltham, TW14 0AE

  Erection of a detached outbuilding in the rear garden following demolition of existing shed.

  Received 2 Oct, published by the council 9 Oct 2026 Householder
• P/2026/2301 Granted

  4 Glebe Street, Chiswick, W4 2BG

  Erection of a front side and rear side infill extensions with alterations to the rear elevation, a rear side first floor infill extension with replacement of windows to the rear elevation and installation of new rooflights to the existing ground floor infill extension of the house

  Received 7 Aug, published by the council 16 Aug 2026 Householder
• P/2026/1167 Granted

  20 Firs Drive, Hounslow, TW5 9TD

  Erection of part one, part two-storey side extension following demolition of existing garage and part one, part two-storey rear extension. Raising of roof ridge, erection of rear roof extensions, and installation of one front roof window.

  Received 15 Apr, published by the council 26 Jul 2026 Householder
• P/2026/2025 Granted

  1 Kneller Gardens, Isleworth, TW7 7NP

  Erection of a single storey rear and first floor side extension incorporating the conversion of the existing garage to a habitable room

  Received 8 Jul, published by the council 26 Jul 2026 Householder