104 Rosemary Avenue, Hounslow, TW4 7JG

This site has had 2 applications since 2026: 1 approved, 0 refused.

• P/2026/1947 Granted

  104 Rosemary Avenue, Hounslow, TW4 7JG

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

  Decided 17 Aug 2026 Lawful development

1. 24 Aug 2026

   Received by Hounslow

2. 26 Aug 2026

   Added to PlanIndex

3. 5 Sep 2026

   Status changed to REGISTERED: Under Consultation

   Previously REGISTERED: Valid.

4. Decision

   Awaiting decision

   Decision expected by 19 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 55 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.

• 104 Rosemary Avenue, Hounslow, TW4 7JG

  P/2026/1947 Submitted 1 Jul 2026 0m away

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

  Granted Lawful development Extension Loft or dormer +1 6 docs

• 79 ROSEMARY AVENUE, HOUNSLOW, TW4 7JQ

  P/2019/3969 Submitted 31 Oct 2019 39m away

  Erection of a two storey side extension and conversion from a single family dwelling into two 1-bed residential units

  Refused Full applications Extension 12 docs
  Domestic

• 14 Manor Avenue, Hounslow, TW4 7JR

  P/2025/0359 Submitted 5 Feb 2025 75m away

  Lawful development certificate existing for the continue use of the outbuilding as a self-contained unit

  Withdrawn Lawful development 3 docs

• 1 IVANHOE ROAD, HOUNSLOW, TW4 7JH

  P/2021/2221 Submitted 4 Jun 2021 89m away

  Erection of a side extension to existing rear roof extension with one front roof window.

  Refused Householder Extension Windows or glazing 7 docs
  Domestic

• 41 Manor Avenue, Hounslow, TW4 7JN

  P/2025/3262 Submitted 28 Oct 2025 89m away

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

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 41 Manor Avenue, Hounslow, TW4 7JN

  PA/2025/3261 Submitted 28 Oct 2025 89m away

  Ground floor rear extension 6.00 metres deep, maximum height 3.10 metres, 3.00 metres high to the eaves.

  Granted Prior approval Extension 5 docs

• PA/2026/2167 Granted

  2 Church Walk, Brentford, TW8 8DB

  Ground floor rear extension 4.50 metres deep, maximum height 4.00 metres, 3.00 metres high to the eaves.

  24 Jul 2026 Prior approval
• PA/2026/2475 Awaiting decision

  4 Upton Road, Hounslow, TW3 3HP

  GS868133219 - Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 3.00 metres high to the eaves

  1 Sep 2026 Prior approval
• PA/2026/2481 Awaiting decision

  6 Speart Lane, Hounslow, TW5 9EF

  Ground floor rear extension 8.00 metres deep, maximum height of 3.00 metres, 2.80 metres high to the eaves

  1 Sep 2026 Prior approval
• PA/2026/2458 Awaiting decision

  82 Ringway, Southall, UB2 5SU

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

  28 Aug 2026 Prior approval
• PA/2026/2461 Awaiting decision

  24 Kingston Avenue, Feltham, TW14 9SL

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

  28 Aug 2026 Prior approval