Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB Data via plota.co.uk
Description
Certificate of lawfulness to determine whether the proposed garage conversion, alterations to fenestration, 1 no. front dormer and 1 no. rear dormer to facilitate a loft conversion is lawful. Data via plota.co.uk
Last checked
Decision outlook
Plota predicted a decision around 9 Oct 2026; it is now day 77.
Day 77, past the statutory target. 95% of extensions in Windsor and Maidenhead are decided within thirteen weeks, which runs to 23 Oct 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 24 Aug 2026.
Plota live figures for extensions decided by Windsor and Maidenhead in the last twelve months, from validation. Windsor and Maidenhead decision record →
Site constraints 8
Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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.
Sales history 2
Last sold for £1,750,000 in December 2020. Detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Every application in Windsor and Maidenhead - and every UK council - as a live feed, an API, or a bulk CSV export.
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Historical activity at this location
9 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Windsor and Maidenhead is faster than most councils at deciding householder applications, ranking #82 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Windsor and Maidenhead is also one of the strictest councils - it refuses more householder applications than almost any other, with only 74% approved vs 90% nationally.
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.