44 Park Avenue, Hounslow TW3 2LX

1. 12 Feb 2026

   Received by Richmond upon Thames

2. 25 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 20 Apr 2026

   Decision issued: Granted Permission

4. 13 Aug 2026

   Added to PlanIndex

Richmond upon Thames granted permission on 20 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. 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.

• 51 Park Avenue, Hounslow, TW3 2LY

  P/2026/0058 Submitted 9 Jan 2026 70m away

  100% historically approved · decision due ~6 Mar

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

  Awaiting decision Lawful development Extension Loft or dormer +1 8 docs

• 58 Wills Crescent Whitton Hounslow TW3 2JB

  21/1772/HOT Submitted 17 May 2021 101m away

  single storey side and rear extension following removal of existing side garage

  Granted Householder Extension 9 docs
  Small domestic

• 80 ARGYLE AVENUE, HOUNSLOW, TW3 2LN

  PA/2023/0680 Submitted 2 Mar 2023 102m away

  Ground floor rear extension 6.00 metres deep, maximum height 2.95 metres, 2.95 metres high to the eaves

  Granted Prior approval Extension 6 docs

• 76 Argyle Avenue, Hounslow, TW3 2LN

  P/2026/1490 Submitted 18 May 2026 112m away

  Certificate of Lawfulness for the proposed erection of a rear roof extension, including a hip-to-gable roof conversion and installation of three front roof windows, erection of a front porch, and erection of a single-storey detached outbuilding in the rear garden.

  Granted Lawful development Extension Loft or dormer +1 11 docs
  Small domestic

• 76 Argyle Avenue, Hounslow, TW3 2LN

  PA/2026/1491 Submitted 18 May 2026 112m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.82 metres high to the eaves

  Granted Prior approval Extension 4 docs

• 76 Argyle Avenue, Hounslow, TW3 2LN

  P/2026/2400 Submitted 19 Aug 2026 112m away

  76% historically approved · decision due ~29 Oct

  Erection of a two storey side and rear extension.

  Awaiting decision Householder Extension 7 docs
  Domestic

• PA26/3082 Awaiting decision

  First Floor Jubilee Court 63A High Street Hampton Wick Kingston Upon Thames KT1 4DG

  Existing use of the premises as an office falling within Use Class E(g)(i).

  4 Sep 2026 Lawful development
• PA26/2952 Awaiting decision

  Garages Adjacent 11 Ferrymoor Ham

  Confirmation that relevant works have been carried out to enable the implementation of planning permission 22/1486/FUL for demolition of garage block and redevelopment of the site for two three storey four bed townhouses (Class C3) with associated amenity space, car and cycle parking and refuse stores.

  25 Aug 2026 Lawful development
• PA26/2007 Granted

  192A and 192B, Kingston Road, Teddington, TW11 9JD

  Existing use of the property as multiple self-contained flats (2).

  9 Jun 2026 Lawful development
• PA26/1531 Granted

  4 Whiteleys Way Hanworth Feltham TW13 6HP

  Certificate of Lawful Development (Existing) for rear outbuilding.

  5 May 2026 Lawful development
• PA26/2608 Awaiting decision

  10 Russell Road Twickenham Middlesex TW2 7QT

  Use of the site and buildings as a Guest House (Use Class C1)

  27 Jul 2026 Lawful development