58 Hartham Road, Isleworth, TW7 5ES

1. 18 Dec 2024

   Received by Hounslow

2. 9 Jan 2025

   Decision issued: LAWFNOTGRANT

3. 23 Sep 2026

   Added to PlanIndex

This application is at appeal, which passes the decision from Hounslow to the planning inspectorate, and the outcome will replace the council's decision. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 74 HARTHAM ROAD, ISLEWORTH, TW7 5ET

  PA/2021/2273 Submitted 7 Jun 2021 50 yards away

  Ground floor rear extension 4.00 metres deep, maximum height of 3.70 metres, 3.70 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 53 Hartham Road, Isleworth, TW7 5EY

  PA/2024/3560 Submitted 28 Oct 2024 100 yards away

  Ground floor rear extension 6.00 metres deep, maximum height of 4.00 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 9 docs

• 53 Hartham Road, Isleworth, TW7 5EY

  PA/2024/3138 Submitted 18 Sep 2024 100 yards away

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

  Granted Prior approval Extension 11 docs

• 22 Parkwood Road, Isleworth, TW7 5HA

  P/2025/2749 Submitted 11 Sep 2025 150 yards away

  Erection of a single storey rear extension and existing garage partial conversion into habitable space.

  Granted Householder Extension 22 docs
  Small domestic

• 20 Parkwood Road, Isleworth, TW7 5HA

  PA/2024/4141 Submitted 9 Dec 2024 150 yards away

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

  Granted Prior approval Extension 5 docs

• 20 Parkwood Road, Isleworth, TW7 5HA

  P/2026/2445 Submitted 26 Aug 2026 150 yards away

  76% historically approved · decision due ~21 Oct

  Revised single storey rear infill extension, installation of drainage channel adjacent to the front boundary, and reduction in height of front gate and piers.

  Awaiting decision Householder Extension 9 docs
  Small domestic

• P/2026/2675 Awaiting decision

  17 Saxon Avenue, Feltham, TW13 5JJ

  Certificate of lawfulness for the proposed erection of a rear roof extension with two roof windows to the front and a Juliet balcony to the rear of the house.

  Received 21 Sep, published by the council 23 Sep 2026 Lawful development
• P/2026/2668 Awaiting decision

  45 Shelley Crescent, Hounslow, TW5 9BQ

  Certificate of lawfulness for the proposed erection of a detached outbuilding in the rear garden.

  Received 21 Sep, published by the council 23 Sep 2026 Lawful development
• P/2026/2651 Awaiting decision

  3 Clayponds Avenue, Brentford, TW8 9QQ

  Certificate of lawfulness for the proposed erection of a rear roof extension with two roof windows to the front of the house.

  Received 17 Sep, published by the council 20 Sep 2026 Lawful development
• P/2026/2627 Awaiting decision

  23 Elmgate Avenue, Feltham, TW13 7BU

  Certificate of lawfulness for the proposed change of use from residential house Class C3a to a residential home for up to 3 young people aged between 7 and 18 Class C2

  Received 15 Sep, published by the council 20 Sep 2026 Lawful development
• P/2026/2631 Awaiting decision

  17 Northumberland Avenue, Isleworth, TW7 5HZ

  Certificate of lawfulness for the proposed erection of a rear roof extension with three roof windows to the front of the house.

  Received 15 Sep, published by the council 20 Sep 2026 Lawful development