Proposal
Conversion of roof space to habitable use to include a rear dormer with Juliette balcony, 2 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)
As published by the council, reference 80073/APP/2026/1224
Timeline
Dates from the published record
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16 May 2026
Received by Hillingdon
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18 May 2026
Validated
Checked as complete and ready for consideration.
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1 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
-
80073/APP/2026/1189 Granted
101 GOSHAWK GARDENS HAYES UB4 8LD
Erection of a single-storey rear extension and front porch, following the demolition of the existing outbuilding at the rear.
-
78980/APP/2024/2498 Granted
330 LANSBURY DRIVE HAYES UB4 8SW
Change of use from a dwellinghouse (Use Class C3) to a 6 person HMO (Use Class C4) (Application for a Certificate of Lawful Development for a Proposed Development).
-
76493/APP/2021/2297 Refused
334 LANSBURY DRIVE HAYES UB4 8SW
Single storey rear extension and conversion of roof space to habitable use to include a rear dormer, 2 front roof lights and conversion of roof from hip to gable end
-
3898/APP/2021/2048 Granted
HEDGEWOOD SPECIAL SCHOOL WEYMOUTH ROAD HAYES UB4 8NF
Installation of two double modular classrooms units for a temporary period of 5 years and expansion of staff car park with associated landscape works, including removal and relocation of existing temporary structures
-
3898/APP/2021/2842 Granted
HEDGEWOOD SCHOOL WEYMOUTH ROAD HAYES UB4 8NF
Non-material amendment to planning permission Ref: 3898/APP/2021/2048 dated 19/07/2021 (Installation of two double modular classrooms units for a temporary period of 5 years and expansion of staff car park with associated landscape works, including removal and relocation of existing temporary structures) in order to amend the wording of Condition 4
-
73850/APP/2023/333 Refused
301 LANSBURY DRIVE HAYES UB4 8RZ
Retention of a front porch and canopy structure (Retrospective application)
Other full applications applications
In Hillingdon
-
80130/APP/2026/1476 Granted
National Grid 66kV Compound NORTH HYDE GARDENS HAYES UB3 4QQ
Installation of two new transformer bays within the existing North Hyde Substation (National Grid 66kV compound).
-
80085/APP/2026/1376 Granted
9 LAWRENCE DRIVE ICKENHAM UB10 8RN
Erection of single storey wrap-around extension comprising a rear extension and a side extension following demolition of the existing side garage,
-
80132/APP/2026/1519 Granted
90 WHITETHORN AVENUE YIEWSLEY UB7 8LA
Erection of outbuilding to rear garden (Application for a Certificate of Lawful Development for a Proposed Development)
-
80114/APP/2026/1390 Granted
46 HUNTERS GROVE HAYES UB3 3JE
Erection of a single storey rear extension.
-
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.