258 Ash Grove, Hounslow, TW5 9DY

1. 10 Dec 2025

   Received by Hounslow

2. 9 Jan 2026

   Decision issued: PRIOR APPROVAL NEEDED AND REFUSED

3. 12 Aug 2026

   Added to PlanIndex

Hounslow refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

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.

• 153 Ash Grove, Hounslow, TW5 9DX

  P/2025/0031 Submitted 3 Jan 2025 50 yards away

  75% historically approved · decision due ~20 Mar

  Creation of vehicular access to the house

  Awaiting decision Householder 4 docs
  Domestic

• 137 Ash Grove, Hounslow, TW5 9DX

  P/2025/2678 Submitted 3 Sep 2025 100 yards away

  Certificate of lawfulness for the existing use of a House in Multiple Occupation (C4)

  Granted Lawful development 6 docs

• 137 Ash Grove, Hounslow, TW5 9DX

  P/2024/2699 Submitted 8 Aug 2024 100 yards away

  Certificate of lawfulness for the existing change of use from a residential dwelling (C3) to house of multiple occupation (C4)

  Granted Lawful development 7 docs
  Domestic

• 150 Ash Grove, Hounslow, Middlesex, TW5 9DR

  P/2025/3514 Submitted 21 Nov 2025 100 yards away

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

  Granted Householder Extension 9 docs
  Small domestic

• 2 ASH GROVE, HOUNSLOW, TW5 9DR

  P/2021/3110 Submitted 29 Jul 2021 100 yards away

  Erection of a part first floor rear extension to the house

  Granted Householder Extension 4 docs
  Domestic

• 2 ASH GROVE, HOUNSLOW, TW5 9DR

  P/2021/2231 Submitted 4 Jun 2021 100 yards away

  Certificate of Lawfulness for the proposed erection of a rear roof extension incorporating hip to gable conversion to the original roof line and the installation of two front roof windows to the house

  Granted Lawful development Extension Loft or dormer +1 6 docs

• PA/2026/2437 Refused

  17 Orchard Road, Brentford, TW8 0QX

  Ground floor rear extension 5.51 metres deep, maximum height of 2.80 metres, 2.06 metres high to the eaves

  Received 26 Aug, published by the council 2 Sep 2026 Prior approval
• PA/2026/2481 Refused

  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

  Received 1 Sep, published by the council 5 Sep 2026 Prior approval
• PA/2026/2768 Awaiting decision

  86 Kneller Gardens, Isleworth, TW7 7NW

  Ground floor rear extension 4.50 metres, maximum height 3.20 metres, 2.70 metres high to the eaves.

  Received 30 Sep, published by the council 6 Oct 2026 Prior approval
• PA/2026/2393 Granted

  2 Letchworth Avenue, Feltham, TW14 9RY

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.85 metres high to the eaves

  Received 18 Aug, published by the council 23 Aug 2026 Prior approval
• PA/2026/2364 Granted

  9 Westbourne Road, Feltham, TW13 4LX

  Ground floor rear extension 4.5 metres deep, maximum height of 2.8 metres, 2.8 metres high to the eaves

  Received 13 Aug, published by the council 23 Aug 2026 Prior approval