Planning application
23 Heathfield Gardens, Chiswick, London, W4 4JU
Works: Extension Demolition Windows or glazing Domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
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.
As published by the council, reference P/2025/3714
Application record
- Reference
- P/2025/3714
- Type
- Householder Applications
- Status
- Granted As published: Decided: APPROVED
- Decision
- Granted As published: APPROVED
- Received
- 15 Dec 2025
- Validated
- 15 Dec 2025
- Decided
- 17 Apr 2026
- Postcode
- W4 4JU
Site history
Applications at this address on the Hounslow register
This site has had 7 applications since 2025: 4 approved, 0 refused.
-
P/2026/2827 Awaiting decision
23 Heathfield Gardens, Chiswick, London, W4 4JU
Works to tree within a conservation area, Lime (T1) x1 - Fell.
-
P/2026/2680 Awaiting decision
23 Heathfield Gardens, Chiswick, London, W4 4JU
Variation of condition 2 (approved plans) to allow the increase in width of the rear extension, removal of two rooflights from the ground floor side and rear extensions, reduction in width of window 18 at first floor level, minor amendments to the internal layout around the boot room and to the size of window 20 at first floor level of planning permission P/2026/1234 approved 22/04/2026 for the demolition of the existing two storey rear extension and erection of a part two storey, part single storey rear extension, and a side extension to join the detached garage and gym to the house. Installation of double glazed windows to replace existing. Relocation of the existing air conditioning unit to garden boundary wall
-
P/2026/2307 Granted
23 Heathfield Gardens, Chiswick, London, W4 4JU
Works to tree in a Conservation Area: T1 Cherry (Prunus spp). Fell to ground level.
-
P/2026/1864 Granted
23 Heathfield Gardens, Chiswick, London, W4 4JU
Works to Cherry tree within a conservation area. Reduce height by 4.5 metres and back to previous reduction points. Reduce lateral growth by 2-3.5 metres and back to previous reduction points, retaining shortened furnishing growth. Thin internal growth by 15%. Remove ivy to ground level.
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P/2026/1234 Granted
23 Heathfield Gardens, Chiswick, London, W4 4JU
Demolition of the existing two storey rear extension and erection of a part two storey, part single storey rear extension, and a side extension to join the detached garage and gym to the house. Installation of double glazed windows to replace existing. Relocation of the existing air conditioning unit to garden boundary wall.
-
P/2025/2607 Withdrawn
23 Heathfield Gardens, Chiswick, London, W4 4JU
Works to trees within a conservation area - Cherry - Reduce by 2m Height and 1.5m Width.
Timeline
Dates from the published record
-
15 Dec 2025
Received by Hounslow
-
17 Apr 2026
Decision issued: APPROVED
-
12 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
35 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Hounslow granted permission on 17 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.
About householder applications
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.
Nearby applications
Within 0.3 miles
-
23 Heathfield Gardens, Chiswick, London, W4 4JU
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
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
99% historically approved · decision due ~30 Nov
Works to tree within a conservation area, Lime (T1) x1 - Fell.
Awaiting decision Trees 3 docs -
23 Heathfield Gardens, Chiswick, London, W4 4JU
Works to Cherry tree within a conservation area. Reduce height by 4.5 metres and back to previous reduction points. Reduce lateral growth by 2-3.5 metres and back to previous reduction points, retaining shortened furnishing growth. Thin internal growth by 15%. Remove ivy to ground level.
Granted Trees 4 docs -
23 Heathfield Gardens, Chiswick, London, W4 4JU
Demolition of the existing two storey rear extension and erection of a part two storey, part single storey rear extension, and a side extension to join the detached garage and gym to the house. Installation of double glazed windows to replace existing. Relocation of the existing air conditioning unit to garden boundary wall.
Granted Householder Extension Demolition +1 38 docsSmall domestic -
23 Heathfield Gardens, Chiswick, London, W4 4JU
89% historically approved · decision due ~17 Nov
Variation of condition 2 (approved plans) to allow the increase in width of the rear extension, removal of two rooflights from the ground floor side and rear extensions, reduction in width of window 18 at first floor level, minor amendments to the internal layout around the boot room and to the size of window 20 at first floor level of planning permission P/2026/1234 approved 22/04/2026 for the demolition of the existing two storey rear extension and erection of a part two storey, part single storey rear extension, and a side extension to join the detached garage and gym to the house. Installation of double glazed windows to replace existing. Relocation of the existing air conditioning unit to garden boundary wall
Awaiting decision Conditions Extension Loft or dormer +2 10 docsSmall domestic
Other householder applications
In Hounslow
-
P/2026/2304 Granted
18 Clifden Road, Brentford, TW8 0PF
Erection of a side and rear extensions.
-
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.
-
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
-
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.
-
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