22 Mansfield Drive Hayes Data via plota.co.uk
Proposal
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, with a patio. (Lawful Development Certificate for Proposed Development). Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision around 2 Dec 2026, from Hillingdon's recent extensions.
Site constraints 4
Checked on 21 October 2026. Historic England, the Environment Agency, Natural England, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
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Important details
- Council
- Hillingdon
- Received
- 9 Oct 2026
- Validated
- 9 Oct 2026
- Ward
- CHARVILLE 2022
- Case officer
- Show
- Target decision
- 4 Dec 2026
- Agent
- Show
Decision outlook
Day 19 of the 56-day target. Hillingdon usually decides extensions by day 54.
Plota live figures for extensions decided by Hillingdon in the last twelve months, from validation. Hillingdon decision record →
Hillingdon ranks #194 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (90%) than the national average (90%).
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22 Mansfield Drive Hayes
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