Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

This site has had 10 applications since 2022: 4 approved, 2 refused.

• 26/02161/NMA Awaiting decision

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Non material amendments to planning permission 24/01755/FULL for alterations to the roof, roof overhang, fenestration and external finish.

  Submitted 2 Sep 2026 Amendments
• 26/01326/NMA Refused

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Non material amendments to planning permission 24/00494/FULL for changes to ground floor roof overhangs to be supported by beams and posts or with additional posts, alterations to fenestration on ground and first floor and additional windows to gable ends in roof-space, and insertion of rooflight in flat-top roof. Alterations to chimneys and 3no additional flues.

  Decided 23 Jun 2026 Amendments
• 26/00579/CONDIT Granted

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Details required by Condition 6 (BNG Calculations) and Condition 7 (Biodiversity Enhancements) of planning permission 24/00494/FULL for a replacement detached dwelling with solar panels.

  Decided 1 Apr 2026 Conditions
• 24/02271/VAR Withdrawn

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Variation (under Section 73) of Condition 13 to substitute those plans approved under 24/00494/FULL for the Replacement detached dwelling with solar panels with amended plans.

  Decided 5 Nov 2024 Amendments
• 23/02120/TPO Granted

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  As per submitted schedule, but with the following amendments: no works to T2 Oak, T29 Sycamore, T31 Sycamore and T32 Sycamore, and no works to T3 Oak other than pruning to give 2m clearance to the roof of the existing wooden garage and up to 5.2m clearance over the shared driveway east of the wooden access gate. (012/1984/TPO)

  Decided 17 Nov 2023 Trees
• 23/02029/PDXL Granted

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Single storey rear extension no greater than 8.00m in depth, 4.00m high with an eaves height of 3.00m.

  Decided 18 Sep 2023 Prior approval
• 23/02004/CPD Withdrawn

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Certificate of lawfulness to determine whether the proposed single storey side extension, loft conversion with 2 no. rooflights, rear dormer and 3 no. outbuildings following demolition of existing garage is lawful.

  Decided 30 Oct 2023 Lawful development
• 23/01793/CPD Refused

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Certificate of lawfulness to determine whether the proposed single storey side extension, 1no. rear dormer, 2no. detached outbuildings and a replacement detached triple garage with office ancillary to the main dwelling is lawful.

  Decided 3 Aug 2023 Lawful development
• 23/01789/PDXL Withdrawn

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  Single storey rear extension no greater than 8.00m in depth, 4.00m high with an eaves height of 3.00m.

  Decided 1 Sep 2023 Prior approval

1. 23 Dec 2022

   Received by Windsor and Maidenhead

2. 6 Jan 2023

   Validated

   Checked as complete and ready for consideration.

3. 29 Mar 2023

   Decision issued: Application Permitted

4. 27 Jul 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 29 March 2023, 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.

Applications for works to trees cover protected trees: consent under a tree preservation order, or six weeks notice for trees in a conservation area. More in our guide to planning application types.

• Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  23/02120/TPO Submitted 29 Aug 2023 22m away

  As per submitted schedule, but with the following amendments: no works to T2 Oak, T29 Sycamore, T31 Sycamore and T32 Sycamore, and no works to T3 Oak other than pruning to give 2m clearance to the roof of the existing wooden garage and up to 5.2m clearance over the shared driveway east of the wooden access gate. (012/1984/TPO)

  Granted Trees 9 docs

• Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  23/02004/CPD Submitted 15 Aug 2023 24m away

  Certificate of lawfulness to determine whether the proposed single storey side extension, loft conversion with 2 no. rooflights, rear dormer and 3 no. outbuildings following demolition of existing garage is lawful.

  Withdrawn Lawful development Extension Loft or dormer +1 13 docs
  Small domestic

• Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  26/01326/NMA Submitted 28 May 2026 26m away

  Non material amendments to planning permission 24/00494/FULL for changes to ground floor roof overhangs to be supported by beams and posts or with additional posts, alterations to fenestration on ground and first floor and additional windows to gable ends in roof-space, and insertion of rooflight in flat-top roof. Alterations to chimneys and 3no additional flues.

  Refused Amendments Loft or dormer Roofing +1 10 docs

• Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  26/00579/CONDIT Submitted 2 Mar 2026 26m away

  Details required by Condition 6 (BNG Calculations) and Condition 7 (Biodiversity Enhancements) of planning permission 24/00494/FULL for a replacement detached dwelling with solar panels.

  Granted Conditions New dwelling 7 docs
  Domestic

• Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  24/02271/VAR Submitted 19 Sep 2024 28m away

  Variation (under Section 73) of Condition 13 to substitute those plans approved under 24/00494/FULL for the Replacement detached dwelling with solar panels with amended plans.

  Withdrawn Amendments New dwelling 20 docs
  Domestic

• Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  23/01793/CPD Submitted 21 Jul 2023 28m away

  Certificate of lawfulness to determine whether the proposed single storey side extension, 1no. rear dormer, 2no. detached outbuildings and a replacement detached triple garage with office ancillary to the main dwelling is lawful.

  Refused Lawful development Extension Loft or dormer 14 docs
  Small domestic

• 26/01982/TPO Granted

  Knights Kingdom Legoland Windsor Resort Winkfield Road Windsor

  G3 - Acer - Prune clear of building by 2m, lateral growth on north side after pruning will be 2.5m, G4 - Oak - Prune clear of building by 2m lateral growth on west side after pruning will be 7m (003/1963/TPO).

  Received 11 Aug, published by the council 24 Aug 2026 Trees
• 26/00667/TPO Split decision

  Styles Charters Road Sunningdale Ascot SL5 9QD

  (T1) Lime - Reduce height by 7m and reduce spread by 6m to leave finished height of 12m and finished spread of 10m. (T2) Oak - Fell to ground level. (T3) Oak - Remove 2 x lowest branches that have been previously cut back. The two branches have previously been stubbed and it would be more appropriate for these branches to be removed entirely. (T4) Oak - Reduce spread on NW side to previous pruning points to leave finished spread of 5m. (003/2023/TPO)

  Received 12 Mar, published by the council 25 Jul 2026 Trees
• 26/01998/TCA Granted

  Mayflower New Road Hurley Maidenhead SL6 5LN

  (T1) Eucalyptus - Fell.

  Received 12 Aug, published by the council 16 Aug 2026 Trees
• 26/01964/TCA Granted

  Baldwins End Cottage Eton College Baldwins Shore Eton Windsor SL4 6DB

  (048G) Beech - Fell to ground level

  Received 10 Aug, published by the council 16 Aug 2026 Trees
• 26/02235/TCA Awaiting decision

  32 Edinburgh Gardens Windsor SL4 2AW

  3no. Apple trees - Crown reduction to a final height of 3m and spread of 2.5m.

  Received 9 Sep, published by the council 18 Sep 2026 Trees