HAYES Hillingdon
Proposed development of the conversion of the existing roof space to habitable use, including a hip-to-gable roof enlargement, rear dormer extension, the installation of two rooflights within the front roof slope, and a window within the side gable elevation. The application also seeks the erection of a detached garden outbuilding, incidental to the enjoyment of the dwellinghouse, to be used as a home office/gym. (Lawful Development Certificate for Proposed Development).
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Progress
Application details
- Reference
- 7848/APP/2026/2377
- Local authority
- Hillingdon
- Ward
- CHARVILLE 2022
- Application type
- All Other
- Property type
- Commercial
Key dates
- Submitted
- 9 Oct 2026
- Validated
- 9 Oct 2026
- Target decision
- 4 Dec 2026
Estimated project value
£28k–£75k
Typical UK cost for this job type, at UK average rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.