21 Heathfield Gardens, Chiswick, London, W4 4JU

This site has had 3 applications since 2022: 2 approved, 1 refused.

• P/2026/1692 Granted

  21 Heathfield Gardens, Chiswick, London, W4 4JU

  Details of Construction Logistics Plan submitted pursuant to condition 4 of planning permission P/2026/0286 dated 31/03/2026 for Erection of a single storey and part first floor rear extension following the demolition of the conservatory, and creation of a basement extension to the house. Resurfacing existing driveway with permeable paving.

  Decided 4 Sep 2026 Conditions
• P/2022/4092 Refused

  21 HEATHFIELD GARDENS, CHISWICK, LONDON, W4 4JU

  Enlargement of existing roof, replacement of all metal casement windows to timber framed sash windows and replacement of one front roof window with two

  Decided 20 Mar 2023 Householder

1. 30 Jan 2026

   Received by Hounslow

2. 31 Mar 2026

   Decision issued: APPROVED

3. 12 Aug 2026

   Added to PlanIndex

1 later application on the register refers to this one:

• P/2026/1692 Granted

  21 Heathfield Gardens, Chiswick, London, W4 4JU

  Details of Construction Logistics Plan submitted pursuant to condition 4 of planning permission P/2026/0286 dated 31/03/2026 for Erection of a single storey and part first floor rear extension following the demolition of the conservatory, and creation of a basement extension to the house. Resurfacing existing driveway with permeable paving.

  Decided 4 Sep 2026 Conditions

Hounslow granted permission on 31 March 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.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 21 Heathfield Gardens, Chiswick, London, W4 4JU

  P/2026/1692 Submitted 8 Jun 2026 50 yards away

  Details of Construction Logistics Plan submitted pursuant to condition 4 of planning permission P/2026/0286 dated 31/03/2026 for Erection of a single storey and part first floor rear extension following the demolition of the conservatory, and creation of a basement extension to the house. Resurfacing existing driveway with permeable paving.

  Granted Conditions Extension Demolition 6 docs
  Small domestic

• 21 HEATHFIELD GARDENS, CHISWICK, LONDON, W4 4JU

  P/2022/4092 Submitted 22 Dec 2022 50 yards away

  Enlargement of existing roof, replacement of all metal casement windows to timber framed sash windows and replacement of one front roof window with two

  Refused Householder Roofing Windows or glazing 11 docs
  Domestic

• 23 Heathfield Gardens, Chiswick, London, W4 4JU

  P/2026/2307 Submitted 7 Aug 2026 50 yards away

  Works to tree in a Conservation Area: T1 Cherry (Prunus spp). Fell to ground level.

  Granted Trees 5 docs

• 23 Heathfield Gardens, Chiswick, London, W4 4JU

  P/2025/3714 Submitted 15 Dec 2025 50 yards away

  Erection of two storey side extension with a part single part two storey rear extension, following the demolition of the garage and the two storey rear extension. Replacement of the existing windows throughout with double glazed timber frame units, repositioning of the air source heat pump (ASHP) to rear garden.

  Granted Householder Extension Demolition +1 35 docs
  Domestic

• 23 Heathfield Gardens, Chiswick, London, W4 4JU

  P/2025/2607 Submitted 26 Aug 2025 50 yards away

  Works to trees within a conservation area - Cherry - Reduce by 2m Height and 1.5m Width.

  Withdrawn Trees 2 docs

• 23 Heathfield Gardens, Chiswick, London, W4 4JU

  P/2026/2827 Submitted 5 Oct 2026 50 yards away

  99% historically approved · decision due ~30 Nov

  Works to tree within a conservation area, Lime (T1) x1 - Fell.

  Awaiting decision Trees 3 docs

• P/2026/2304 Granted

  18 Clifden Road, Brentford, TW8 0PF

  Erection of a side and rear extensions.

  Received 7 Aug, published by the council 12 Aug 2026 Householder
• P/2026/2804 Awaiting decision

  128 Durham Road, Feltham, TW14 0AE

  Erection of a detached outbuilding in the rear garden following demolition of existing shed.

  Received 2 Oct, published by the council 9 Oct 2026 Householder
• P/2026/2301 Granted

  4 Glebe Street, Chiswick, W4 2BG

  Erection of a front side and rear side infill extensions with alterations to the rear elevation, a rear side first floor infill extension with replacement of windows to the rear elevation and installation of new rooflights to the existing ground floor infill extension of the house

  Received 7 Aug, published by the council 16 Aug 2026 Householder
• P/2026/1167 Granted

  20 Firs Drive, Hounslow, TW5 9TD

  Erection of part one, part two-storey side extension following demolition of existing garage and part one, part two-storey rear extension. Raising of roof ridge, erection of rear roof extensions, and installation of one front roof window.

  Received 15 Apr, published by the council 26 Jul 2026 Householder
• P/2026/2025 Granted

  1 Kneller Gardens, Isleworth, TW7 7NP

  Erection of a single storey rear and first floor side extension incorporating the conversion of the existing garage to a habitable room

  Received 8 Jul, published by the council 26 Jul 2026 Householder