Planning application
Mulliner House, Flanders Road, Chiswick, London, W4 1NN
Works: Extension Small 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 a single storey side extension and an additional floor at roof level with a roof terrace, relocation of the entrance and alterations to the façade, enclosure of the basement car park to create swimming pools with landscaping, plants and associated works
As published by the council, reference P/2025/3644
Application record
- Reference
- P/2025/3644
- Type
- PF-Full Applications
- Status
- Granted As published: Decided: APPROVED
- Decision
- Granted As published: APPROVED
- Received
- 8 Dec 2025
- Validated
- 18 Dec 2025
- Decided
- 24 Jul 2026
- Ward
- Chiswick Homefields
- Postcode
- W4 1NN
Site history
Applications at this address on the Hounslow register
This site has had 2 applications since 2025: 2 approved, 0 refused.
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P/2025/3229 Granted
Mulliner House,Flanders Road,Chiswick,London,W4 1NN
Certificate of lawfulness of the proposed use of the site as a family childcare and indoor recreation facility comprising children's activity areas, a creche, soft play area, gym and wellness facilities, workspace and meeting rooms, lounges, and a cafe/restaurant falls within the existing building's lawful use (Use Class E)
Timeline
Dates from the published record
-
8 Dec 2025
Received by Hounslow
-
18 Dec 2025
Validated
Checked as complete and ready for consideration.
-
24 Jul 2026
Decision issued: APPROVED
-
26 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
105 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.
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Open the documentsWhat this grant of permission means
Hounslow granted permission on 24 July 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 full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 500 metres
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MULLINER HOUSE FLANDERS ROAD, CHISWICK, W4 1NN
T1 Norway Maple. Crown reduce close to previous prune points. Height reduce 2m Spread 1.5m. Prune back off building to create a 2m clearance between tree and building. Lift crowns to 2.5m. T2 Norway Maple. Crown reduce close to previous prune points. Height reduce 2m Spread max 1m. Prune back off building to create a 2m clearance between tree and building. Lift crowns to 2.5m. T3 Norway Maple (red). Crown reduced by 30%. Height reduce 3m Spread 2m. Prune back off building to create a 2m clearance between tree and building. Lift crowns to 2.5m. T4 Norway Maple. Crown reduced by 30%. Height reduce 2m Spread 1.5m. Prune back off building to create a 2m clearance between tree and building. Lift crowns to 2.5m. Reason for works. To maintain the trees at no larger than the present size.
Granted Trees 6 docs -
Mulliner House,Flanders Road,Chiswick,London,W4 1NN
Certificate of lawfulness of the proposed use of the site as a family childcare and indoor recreation facility comprising children's activity areas, a creche, soft play area, gym and wellness facilities, workspace and meeting rooms, lounges, and a cafe/restaurant falls within the existing building's lawful use (Use Class E)
Granted Lawful development 13 docs -
Mulliner House,Flanders Road,Chiswick,W4 1NN
Works to trees in a Conservation Area - G1- 3 X Maple prune clear of building to allow 1.5 metres clearance and T2-Maple prune clear of street lamp by 1 metre in front garden
Granted Trees 4 docs -
MULLINER HOUSE FLANDERS ROAD, CHISWICK, W4 1NN
Prior approval notification for change of use from office (Use Class E(g)(i)) (previously Use Class B1(a)) to form 50 residential flats comprising 37 studios, 11 one bedroom flats and two. 2 bedroom flats (Use Class C3).
Refused Prior approval New dwelling 21 docs -
Mulliner House Flanders Road Chiswick London W4 1NN
Erection of a single storey side extension and an additional floor at roof level with a roof terrace, relocation of the entrance and alterations to the facade, enclosure of the basement car park to create swimming pools with landscaping and associated works ( out of borough)
Refused Outline Extension 2 docsSmall domestic -
Mulliner House Flanders Road Chiswick London W4 1NN
Erection of a single storey side extension and an additional floor at roof level with a roof terrace, relocation of the entrance and alterations to the facade, enclosure of the basement car park to create swimming pools with landscaping and associated works ( out of borough)
Refused Outline Extension 2 docsSmall domestic
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P/2026/2596 Awaiting decision
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-
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P/2026/2080 Granted
2 Chiswick High Road, Chiswick, London, W4 1TH
Replacement of all windows and doors.