3 Sunnymede Cottages Ray Mill Road East Maidenhead SL6 8SZ

1. 29 Sep 2026

   Received by Windsor and Maidenhead

2. 7 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 24 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.

• 13 Chestnut Close Maidenhead SL6 8SY

  23/01180/FULL Submitted 15 May 2023 50 yards away

  Garage conversion and alterations to fenestration.

  Granted Full applications Windows or glazing 9 docs

• High Trees Ray Mill Road East Maidenhead SL6 8SR

  19/02941/VAR Submitted 23 Oct 2019 50 yards away

  Variation (under Section 73) of Condition 3 (Approved Plans) to substitute those plans approved under 19/00812/FULL for a first floor front extension and alterations to the front and rear fenestration with amended plans.

  Granted Amendments Extension Windows or glazing 8 docs

• 75A Ray Park Avenue Maidenhead SL6 8EG

  20/02680/FULL Submitted 12 Oct 2020 50 yards away

  Roof extension with support post to the ground floor front elevation and a first floor side extension.

  Granted Full applications Extension 8 docs

• Holmlea Ray Mill Road East Maidenhead SL6 8SX

  23/02477/FULL Submitted 10 Oct 2023 50 yards away

  Single storey side extension and alterations to fenestration

  Granted Full applications Extension Windows or glazing 16 docs
  Small domestic

• Brookwood Cottage 82 Ray Mill Road East Maidenhead SL6 8TD

  26/01081/FULL Submitted 1 May 2026 100 yards away

  Single storey front/side extension, first floor front/side extension, first floor rear extension, alterations to fenestration, new boundary treatment and enlargement of existing access.

  Granted Full applications Extension Windows or glazing 19 docs
  Small domestic

• 75 Ray Park Avenue Maidenhead SL6 8EG

  22/01233/FULL Submitted 9 May 2022 100 yards away

  Two storey rear extension and single storey side/rear extension.

  Granted Full applications Extension 9 docs
  Small domestic

• 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