47 Westwood Green Cookham Maidenhead SL6 9DE

1. 18 Sep 2026

   Received by Windsor and Maidenhead

2. 24 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 13 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Windsor and Maidenhead took a median of 56 days over the applications it decided in the last year.

This application is with Windsor and Maidenhead for determination, against a statutory target of eight weeks. Over the last year Windsor and Maidenhead decided lawful development applications in a median of 50 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 46 Westwood Green Cookham Maidenhead SL6 9DE

  20/00410/FULL Submitted 18 Feb 2020 50 yards away

  Single storey front extension, part garage conversion and alterations to fenestration.

  Granted Full applications Extension Windows or glazing 13 docs
  Small domestic

• 15 Shergold Way Cookham Maidenhead SL6 9NR

  21/01713/FULL Submitted 3 Jun 2021 50 yards away

  Garage conversion, single storey front extension and alterations to fenestration.

  Granted Full applications Extension Windows or glazing 10 docs
  Small domestic

• 41 Westwood Green Cookham Maidenhead SL6 9DD

  21/02526/FULL Submitted 11 Aug 2021 50 yards away

  Single storey rear extension, following demolition of the existing rear conservatory.

  Granted Full applications Extension Demolition 8 docs
  Small domestic

• 41 Westwood Green Cookham Maidenhead SL6 9DD

  21/01630/CPD Submitted 25 May 2021 50 yards away

  Certificate of lawfulness to determine whether the single storey rear extension following demolition of existing conservatory is lawful.

  Refused Lawful development Extension Demolition 8 docs
  Small domestic

• 55 Westwood Green Cookham Maidenhead SL6 9DE

  22/01320/FULL Submitted 17 May 2022 100 yards away

  Hip to gable loft conversion with x1 front rooflight and x1 rear dormer.

  Granted Full applications Loft or dormer 10 docs

• 34 Westwood Green Cookham Maidenhead SL6 9DD

  20/01677/FULL Submitted 13 Jul 2020 100 yards away

  Part two storey part first floor front extension and part single part two storey rear extension, following demolition of the existing rear conservatory.

  Granted Full applications Extension Demolition 10 docs

• 26/02222/CPD Refused

  52 Audley Way Ascot SL5 8EF

  Certificate of lawfulness to determine whether the proposed single storey rear extension following the removal of the existing conservatory is lawful.

  Received 8 Sep, published by the council 24 Sep 2026 Lawful development
• 26/01954/CPD Withdrawn

  Mulberry House Waltham Road Maidenhead SL6 3NH

  Certificate of lawfulness to determine whether the single storey rear extension is lawful.

  Received 7 Aug, published by the council 16 Aug 2026 Lawful development
• 26/01856/CLU Granted

  Apple Tree Cottage And Land Adjacent To Apple Tree Cottage Paley Street Maidenhead

  Certificate of lawfulness to determine whether the existing use of the land as a residential garden incidental to the main dwelling is lawful

  Received 28 Jul, published by the council 24 Aug 2026 Lawful development
• 26/02022/CPD Refused

  14 Church View White Waltham Maidenhead SL6 3JQ

  Certificate of lawfulness to determine whether the proposed 1no. rear dormer and alterations to fenestration are lawful

  Received 17 Aug, published by the council 2 Sep 2026 Lawful development
• 26/01862/CLU Granted

  Holyport Pre School Holyport Youth Club Moneyrow Green Holyport Maidenhead SL6 2NA

  Certificate of lawfulness to determine whether the existing use of the site as a pre-school is lawful.

  Received 29 Jul, published by the council 4 Aug 2026 Lawful development