Proposal
Rear dormer with Juliette balcony, roof lights, conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)
As published by the council, reference 70304/APP/2026/1123
Timeline
Dates from the published record
-
6 May 2026
Received by Hillingdon
-
1 Jun 2026
Validated
Checked as complete and ready for consideration.
-
17 Jul 2026
Decision issued: Permitted
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26 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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80104/APP/2026/1327 Granted
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Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 3.00 metres, and for which the height of the eaves would be 2.80 metres
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73368/APP/2026/347 Granted
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79025/APP/2024/2518 Granted
135 CARLYON ROAD HAYES UB4 0NU
Erection of outbuilding to rear garden. Conversion of roof space to habitable use to include a rear dormer, 3 front roof lights and conversion of roof from hip to gable end with new gable end window (Application for a Certificate of Lawful Development for a Proposed Development)
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79055/APP/2024/2569 Granted
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80063/APP/2026/1149 Decided
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Other full applications applications
In Hillingdon
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20610/APP/2026/872 Granted
UNION WHARF BENTINCK ROAD WEST DRAYTON MIDDLESEX UB7 7RP
Replacement of external materials from spandrel panels to non-combustible alternative (aluminium spandrel panels, replacement of two timber soffits at rear to non-combustible material.
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76133/APP/2026/865 Granted
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Installation of 3no. roof lights, side door, porch and change of elevation finish from render to brickwork
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77246/APP/2026/456 Refused
70 BRACKENBRIDGE DRIVE RUISLIP HA4 0LZ
Change of use from Class C3 (dwellinghouse) to Class C4 (small HMO for up to 5-persons)
-
80079/APP/2026/1222 Granted
22 BURBRIDGE GARDENS UXBRIDGE UB10 0GE
Conversion of roof space to habitable use, including the installation of side-facing rooflights and front and rear gable-end windows (amended drawings and description)
-
70838/APP/2026/1399 Granted
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Erection of a 1no dwellinghouse with associated parking, landscaping, and bike and bin storage, following demolition of existing side extension.