Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

This site has had 5 applications since 2022: 2 approved, 1 refused.

• 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• 24/02271/VAR Withdrawn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
• 22/03414/TPO Granted

  Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  T3 - Beech - Crown reduction by 9m leaving a final height of 14m (012/1984/TPO).

  Decided 29 Mar 2023 Trees

1. 2 Sep 2026

   Received by Windsor and Maidenhead

2. 8 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 28 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 55 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 amendment applications in a median of 47 days. More in our guide to how long planning decisions take.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• Round Copse Alleyns Lane Cookham Maidenhead SL6 9AE

  24/02271/VAR Submitted 19 Sep 2024 1m 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

  26/01326/NMA Submitted 28 May 2026 2m 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 2m 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

  22/03414/TPO Submitted 23 Dec 2022 28m away

  T3 - Beech - Crown reduction by 9m leaving a final height of 14m (012/1984/TPO).

  Granted Trees 6 docs

• Shalloes Alleyns Lane Cookham Maidenhead SL6 9AE

  26/01247/TPO Submitted 18 May 2026 72m away

  T1 - Common Ash - fell (016/1984/TPO).

  Granted Trees 13 docs

• Half Timbers Alleyns Lane Cookham Maidenhead SL6 9AE

  21/01774/FULL Submitted 8 Jun 2021 95m away

  Single storey rear extension and a new basement pool, gym and plant with open sunken courtyard.

  Granted Full applications Extension 26 docs
  Small domestic

• 26/01996/NMA Granted

  Leigh Cottage Church Road Sunningdale Ascot SL5 0NJ

  Non material amendments to planning permission 25/02661/FULL for 1no. additional window to west elevation.

  12 Aug 2026 Amendments
• 26/01388/VAR Granted

  21 Springfield Park Maidenhead SL6 2YN

  Variation (under Section 73) of Condition 3 to substitute those plans approved under 25/03049/FULL for a Garage conversion, single storey front porch, single storey rear/side extension and alterations to fenestration with amended plans.

  4 Jun 2026 Amendments
• 26/01811/NMA Granted

  Grove Park Industrial Estate Waltham Road White Waltham Maidenhead SL6 3LW

  Non material amendments to planning permission 25/01083/VAR for changes to the proposed elevations and materials to plots 10-11, 15-16, 18-19, 24-25, 26-27, 28-29, 39-41, 42-44 and 45-47 and 48-51.

  24 Jul 2026 Amendments
• 25/00668/VAR Granted

  59 Norden Road Maidenhead SL6 4AZ

  Variation (under Section 73) of Condition 15 to substitute those plans approved under 23/00279/FULL for 4 no. flats with associated parking, cycle and refuse storage and new access following the demolition of the existing dwelling with amended plans.

  17 Mar 2025 Amendments
• 26/01154/VAR Granted

  106 - 114 High Street Maidenhead

  Variation (under Section 73) of planning permission 20/03508/OUT as amended by 26/00842/NMA to allow for the alteration of the List of approved drawings condition (3), as well as documents associated with condition 9 (Surface water drainage scheme), 12 (Air quality report) 16 (Retail units/use class) and 19 (Acoustic measures).

  8 May 2026 Amendments