12 Whiteheath Avenue Ruislip Data via plota.co.uk
Proposal
Conversion of roof space to habitable use to include hip to gable roof extensions of both sides, rear dormer, 3x front roof lights, gable end window, and the erection of outbuilding to the rear garden, following the removal of the existing chimney stacks (Application for a Certificate of Lawful Development for a Proposed Development) Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision around 8 Dec 2026, from Hillingdon's recent extensions.
Site constraints 3
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.
Every application in Hillingdon - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Hillingdon
- Received
- 8 Oct 2026
- Validated
- 15 Oct 2026
- Ward
- RUISLIP 2022
- Case officer
- Show
- Target decision
- 10 Dec 2026
- Agent
- Faluck Patel
Decision outlook
Day 13 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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12 Whiteheath Avenue Ruislip
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