Winterdown And Land To The Rear of Winterdown Stone House Lane Cookham Maidenhead SL6 9TP

1. 25 Aug 2026

   Received by Windsor and Maidenhead

2. 1 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 12 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 27 October 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.

• Winterdown Stone House Lane Cookham Maidenhead SL6 9TP

  26/00442/CPD Submitted 18 Feb 2026 50 yards away

  Certificate of lawfulness to determine whether the proposed 2no. outbuildings incidental to the main dwelling, rear terrace, rear patio with hot tub, new pond to replace existing swimming pool, hardstanding and landscaping are lawful.

  Refused Lawful development 8 docs
  Domestic

• Winterdown Stone House Lane Cookham Maidenhead SL6 9TP

  26/01283/FULL Submitted 22 May 2026 50 yards away

  Erection of a replacement garden shed

  Withdrawn Full applications 19 docs
  Small domestic

• Land At Stone House And Land Adjacent To Winterdown Stone House Lane Cookham Maidenhead

  20/01043/TPO Submitted 27 Apr 2020 50 yards away

  (T2) - Ash - Fell and replace. (TPO 005 of 1964)

  Granted Trees 7 docs

• River Thames House Stone House Lane Cookham Maidenhead SL6 9TP

  20/02282/TPO Submitted 3 Sep 2020 50 yards away

  (T18) Copper Beech - lateral crown reduction by means of removing up to 2m of the canopy by pruning back to suitable growth points, crown lift to provide a 3m height clearance above the garden and install a cobra bracing system to support an historical invasive bracing system that is present. (TPO 14 of 1971).

  Granted Trees 8 docs

• River Thames House Stone House Lane Cookham Maidenhead SL6 9TP

  25/03154/TCA Submitted 26 Nov 2025 50 yards away

  (T2) Ash - deadwood and (T3) Ash - deadwood.

  Withdrawn Trees 10 docs

• River Thames House Stone House Lane Cookham Maidenhead SL6 9TP

  20/02281/TCA Submitted 3 Sep 2020 100 yards away

  (T22) Willow - reduce lateral branches by 2m.

  Granted Trees 8 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