3 Witham Road, Isleworth, TW7 4AJ

1. 9 Mar 2026

   Received by Hounslow

2. 27 May 2026

   Decision issued: APPROVED

3. 12 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• 3 Witham Road, Isleworth, TW7 4AJ

  P/2025/3713 Submitted 15 Dec 2025 0m away

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

  Withdrawn Householder Extension 4 docs
  Small domestic

• 62 Thornbury Road, Isleworth, TW7 4LN

  P/2026/0134 Submitted 15 Jan 2026 73m away

  Certificate of lawfulness for the proposed erection of a detached single storey outbuilding to the rear of the house

  Granted Lawful development 6 docs
  Small domestic

• 62 Thornbury Road, Isleworth, TW7 4LN

  P/2025/3090 Submitted 14 Oct 2025 73m away

  Erection a single storey side and rear extension following the demolition of an existing conservatory to the house.

  Granted Householder Extension Demolition 6 docs
  Small domestic

• 197 Spring Grove Road, Isleworth, TW7 4AL

  P/2026/0572 Submitted 18 Feb 2026 81m away

  Erection of a single storey rear and part first floor side extension incorporating alterations to the front porch

  Granted Householder Extension 14 docs
  Small domestic

• 197 Spring Grove Road, Isleworth, TW7 4AL

  P/2026/1363 Submitted 6 May 2026 81m away

  Non Material Amendment to allow design changes to the overhang, roof lights and rear glazing to the single storey rear extension following permission P/2025/1189 dated 15/07/2025 for Erection of a single storey rear extension with a dummy-pitched roof to the front elevation of the existing side extension to the house.

  Granted Amendments Extension Loft or dormer +1 7 docs
  Small domestic

• 197 Spring Grove Road, Isleworth, TW7 4AL

  P/2025/2747 Submitted 11 Sep 2025 81m away

  Certificate of lawfulness for the proposed erection of side and rear roof extensions to the house

  Granted Lawful development Extension 13 docs

• P/2026/1189 Granted

  12 The Grove, Isleworth, TW7 4JZ

  Installation of one front boundary gate and new windows to allow the conversion of existing single family house to five self contained flats with associated refuse and cycle storage.

  17 Apr 2026 Full applications
• P/2026/1937 Granted

  Flat Ground Floor, 102 New Heston Road, Hounslow, TW5 0LF

  Erection of a single storey detached outbuilding for use as a home office in the rear garden of the flat

  30 Jun 2026 Full applications
• P/2026/1494 Granted

  2 Bath Road, Chiswick, London, W4 1LW

  Demolition of the single-storey rear extension, installation of temporary scaffolding to the façade of the building, installation of associated plant equipment, an external condenser unit and acoustic shelter. Internal layout alterations and installation of secondary glazing, external alterations including re-rendering to allow continued use under Class E (c) and (g)(i)

  6 May 2026 Full applications
• P/2026/1936 Refused

  Flat First Floor, 102 New Heston Road, Hounslow, TW5 0LF

  Erection of a rear roof and outrigger extension with two front rooflights to the flat

  30 Jun 2026 Full applications
• P/2026/0592 Granted

  87 Cranleigh Road, Feltham, TW13 4QA

  Erection of a two storey residential house with associated landscaping, private amenity space, cycle and refuse storage.

  19 Feb 2026 Full applications