Tannadice Church Road Cookham Dean Maidenhead SL6 9PR

1. 22 Dec 2025

   Received by Windsor and Maidenhead

2. 22 Jan 2026

   Decision issued: Permitted Development

3. 11 Aug 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 22 January 2026, 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 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.

• Selbourne Church Road Cookham Dean Maidenhead SL6 9PR

  25/02421/CPD Submitted 17 Sep 2025 50 yards away

  Certificate of lawfulness to determine whether the proposed swimming pool is lawful.

  Withdrawn Lawful development 6 docs

• The Glen Church Road Cookham Dean Maidenhead SL6 9PR

  21/02725/FULL Submitted 7 Sep 2021 50 yards away

  Single storey rear extension.

  Granted Full applications Extension 8 docs
  Small domestic

• Old Ducketts Church Road Cookham Dean Maidenhead SL6 9PR

  21/02836/FULL Submitted 20 Sep 2021 50 yards away

  First floor side extension, two storey rear extension, x1 new chimney on the side elevation and alterations to fenestration to include a new ground floor front bay window, following removal of the existing chimney on the front and rear elevations.

  Granted Full applications Extension Windows or glazing 17 docs

• Old Ducketts Church Road Cookham Dean Maidenhead SL6 9PR

  21/00947/CPD Submitted 26 Mar 2021 50 yards away

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

  Granted Lawful development Extension 13 docs

• Old Ducketts Church Road Cookham Dean Maidenhead SL6 9PR

  21/03724/CONDIT Submitted 21 Dec 2021 50 yards away

  Details required by condition 3 (bats) of planning permission 21/02836/FULL for first floor side extension, two storey rear extension, x1 new chimney on the side elevation and alterations to fenestration to include a new ground floor front bay window, following removal of the existing chimney on the front and rear elevations.

  Granted Conditions Extension Windows or glazing 5 docs

• Old Ducketts Church Road Cookham Dean Maidenhead SL6 9PR

  21/00216/FULL Submitted 27 Jan 2021 50 yards away

  First floor side extension and alterations to fenestration

  Granted Full applications Extension Windows or glazing 15 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