Sumner School Lane Cookham Maidenhead SL6 9QJ

1. 15 Oct 2025

   Received by Windsor and Maidenhead

2. 24 Nov 2025

   Decision issued: Application Permitted

3. 11 Aug 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 24 November 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 12 Black Butt Cottages Cookham Maidenhead SL6 9RE

  21/03476/FULL Submitted 25 Nov 2021 50 yards away

  First floor side extension.

  Granted Full applications Extension 14 docs

• 13 Black Butt Cottages Cookham Maidenhead SL6 9RE

  23/00433/CPD Submitted 20 Feb 2023 50 yards away

  Certificate of lawfulness to determine whether the proposed air source heat pump to the side elevation is lawful.

  Refused Lawful development 11 docs

• Verge At Junction of Mill Lane And Sutton Road Cookham Maidenhead

  21/03688/TLDTT Submitted 17 Dec 2021 50 yards away

  Application for determination as to whether prior approval is required for proposed 5G telecoms installation: H3G Phase 8 15m high street pole c/w wrap-around cabinet and 3 further additional equipment cabinets.

  Refused Telecoms Extension 71 docs

• 2 Black Butt Cottages Cookham Maidenhead SL6 9RE

  23/02159/TCA Submitted 31 Aug 2023 50 yards away

  Ash - remove two branches (7-8m) to the north face of the tree, position of cuts shown in photograph in email of 8 September.

  Granted Trees 6 docs

• 5 Black Butt Cottages Cookham Maidenhead SL6 9RE

  21/02346/FULL Submitted 28 Jul 2021 50 yards away

  Two storey side extension and alterations to fenestration, following demolition of the existing garage and shed.

  Granted Full applications Extension Demolition +1 19 docs
  Small domestic

• 5 Black Butt Cottages Cookham Maidenhead SL6 9RE

  21/00756/FULL Submitted 12 Mar 2021 50 yards away

  Part single part two storey front/side extension and alterations to fenestration, following demolition of the existing single storey side element and shed.

  Granted Full applications Extension Demolition +1 19 docs
  Small domestic

• 26/02029/FULL Granted

  5 Kimber Close Windsor SL4 4BJ

  Single storey rear extension.

  Received 17 Aug, published by the council 27 Aug 2026 Full applications
• 26/01955/FULL Granted

  2 Holmlea Road Datchet Slough SL3 9HQ

  Change of use from a dwellinghouse (Use Class C3) to a children's home (Use Class C2) for up to three children, together with conversion of the garage to an office with an en-suite facilities and alterations to fenestration.

  Received 7 Aug, published by the council 27 Aug 2026 Full applications
• 26/01121/FULL Granted

  Zain House 15 Wilton Crescent Windsor SL4 4YJ

  Single storey side/front extension, first floor extension over existing side element with 1no. Juliet balcony and 1no. Juliet balcony to existing rear elevation.

  Received 6 May, published by the council 11 Aug 2026 Full applications
• 26/01977/FULL Granted

  9 St Marks Place Windsor SL4 3BG

  Garage conversion and alterations to fenestration.

  Received 11 Aug, published by the council 24 Aug 2026 Full applications
• 26/01804/FULL Granted

  16 Devereux Road Windsor SL4 1JJ

  Installation of air conditioning compressor unit to the first floor side elevation.

  Received 23 Jul, published by the council 24 Aug 2026 Full applications