Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

This site has had 7 applications since 2021: 4 approved, 3 refused.

• 26/01822/PDXL Granted

  Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  Single storey side/rear extension no greater than 8.00m in depth, 4.00m high with an eaves height of 3.80m.

  Decided 28 Aug 2026 Prior approval
• 26/01823/CPD Granted

  Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  Certificate of lawfulness to determine whether the proposed garage conversion, alterations to fenestration, 1 no. front dormer and 1 no. rear dormer to facilitate a loft conversion is lawful.

  Decided 29 Sep 2026 Lawful development
• 26/01170/PDXL Granted

  Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  Single storey rear extension no greater than 8.00m in depth, 3.84m high with an eaves height of 2.78m.

  Decided 4 Jun 2026 Prior approval
• 26/01169/CPD Refused

  Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  Certificate of lawfulness to determine whether the proposed garage conversion, single storey side/rear extension, 1no. dormer to north and 1no. dormer to south elevation and alterations to fenestration are lawful.

  Decided 3 Jul 2026 Lawful development
• 26/00048/CPD Refused

  Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  Certificate of lawfulness to determine whether the proposed garage conversion, single storey side extension, single storey rear extension, 1 no. front dormer and 1 no. rear dormer to facilitate a loft conversion is lawful.

  Decided 9 Mar 2026 Lawful development
• 21/03469/CPD Refused

  Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  Certificate of lawfulness to determine whether the proposed detached outbuilding is lawful.

  Decided 19 Jan 2022 Lawful development

1. 8 Feb 2022

   Received by Windsor and Maidenhead

2. 14 Feb 2022

   Validated

   Checked as complete and ready for consideration.

3. 11 Apr 2022

   Decision issued: Permitted Development

4. 16 Aug 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 11 April 2022, 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.

• Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  21/03469/CPD Submitted 24 Nov 2021 50 yards away

  Certificate of lawfulness to determine whether the proposed detached outbuilding is lawful.

  Refused Lawful development 7 docs

• Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  26/01823/CPD Submitted 24 Jul 2026 50 yards away

  Certificate of lawfulness to determine whether the proposed garage conversion, alterations to fenestration, 1 no. front dormer and 1 no. rear dormer to facilitate a loft conversion is lawful.

  Granted Lawful development Loft or dormer Windows or glazing 15 docs

• Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  26/01170/PDXL Submitted 11 May 2026 50 yards away

  Single storey rear extension no greater than 8.00m in depth, 3.84m high with an eaves height of 2.78m.

  Granted Prior approval Extension 15 docs
  Small domestic

• Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  26/00048/CPD Submitted 8 Jan 2026 50 yards away

  Certificate of lawfulness to determine whether the proposed garage conversion, single storey side extension, single storey rear extension, 1 no. front dormer and 1 no. rear dormer to facilitate a loft conversion is lawful.

  Refused Lawful development Extension Loft or dormer 13 docs
  Small domestic

• Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  26/01822/PDXL Submitted 24 Jul 2026 50 yards away

  Single storey side/rear extension no greater than 8.00m in depth, 4.00m high with an eaves height of 3.80m.

  Granted Prior approval Extension 16 docs
  Small domestic

• Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

  26/01169/CPD Submitted 11 May 2026 50 yards away

  Certificate of lawfulness to determine whether the proposed garage conversion, single storey side/rear extension, 1no. dormer to north and 1no. dormer to south elevation and alterations to fenestration are lawful.

  Refused Lawful development Extension Loft or dormer +1 14 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