31 Spencer Road, Isleworth, TW7 4BN

1. 9 Sep 2026

   Received by Hounslow

2. 17 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 4 November 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 prior approval applications in a median of 39 days. More in our guide to how long planning decisions take.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 49 Burlington Road, Isleworth, TW7 4LX

  P/2025/3558 Submitted 27 Nov 2025 66m away

  Erection of a single storey rear extension to the house.

  Refused Householder Extension 12 docs
  Small domestic

• 27 Burlington Road, Isleworth, TW7 4LU

  P/2026/0224 Submitted 23 Jan 2026 126m away

  Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows to the house.

  Granted Lawful development Extension Loft or dormer +1 9 docs

• 27 Burlington Road, Isleworth, TW7 4LU

  PA/2026/0874 Submitted 16 Mar 2026 126m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.65 metres high to the eaves

  Granted Prior approval Extension 9 docs

• 27 Burlington Road, Isleworth, TW7 4LU

  P/2026/2148 Submitted 22 Jul 2026 126m away

  77% historically approved · decision due ~16 Sep

  Erection of a two storey side extension, part single storey rear extension and a single storey detached outbuilding.

  Awaiting decision Householder Extension 13 docs
  Small domestic

• 48 Burlington Road, Isleworth, TW7 4LY

  P/2026/1133 Submitted 13 Apr 2026 131m away

  Erection of rear roof extensions, hip-to-gable roof extensions to both sides, and installation of two additional front roof windows.

  Refused Householder Extension Loft or dormer +1 6 docs
  Domestic

• 10 Burlington Road, Isleworth, TW7 4LY

  P/2026/1965 Submitted 2 Jul 2026 142m away

  Erection of a single storey rear extension and a side roof extension to the house.

  Granted Householder Extension 7 docs
  Small domestic

• PA/2026/2611 Awaiting decision

  72 Crosslands Avenue, Southall, UB2 5RA

  Ground floor rear extension 6 metres deep, maximum height of 3 metres, 3 metres high to the eaves

  14 Sep 2026 Prior approval
• PA/2026/2246 Granted

  72 Kneller Gardens, Isleworth, TW7 7NW

  Ground floor rear extension 6.00 metres deep, maximum height of 2.90 metres, 2.90 metres high to the eaves

  3 Aug 2026 Prior approval
• PA/2026/2551 Awaiting decision

  98 Bulstrode Avenue, Hounslow, TW3 3AG

  Ground floor rear extension 5.00 metres deep, maximum height 2.95 metres, 2.95 metres high to the eaves.

  8 Sep 2026 Prior approval
• PA/2026/2550 Awaiting decision

  63 Beavers Crescent, Hounslow, TW4 6EU

  Ground floor rear extension 5.00 metres deep, maximum height 3.51 metres, 3.00 metres high to the eaves.

  8 Sep 2026 Prior approval
• PA/2026/2187 Granted

  205 Brabazon Road, Hounslow, TW5 9LW

  Ground floor rear extension 6.00 metres deep, maximum height of 3.40 metres, 2.90 metres high to the eaves

  28 Jul 2026 Prior approval