The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

This site has had 3 applications since 2025: 3 approved, 0 refused.

• 25/02600/FULL Granted

  The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

  Extension to the existing external fire escape stairs with inset dormer to provide additional access at roof level.

  Decided 2 Mar 2026 Full applications
• 25/02127/CPD Granted

  The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

  Certificate of lawfulness to determine whether the proposed internal alterations and alterations to fenestration is lawful.

  Decided 10 Sep 2025 Lawful development

1. 5 Mar 2026

   Received by Windsor and Maidenhead

2. 1 Apr 2026

   Decision issued: Approve Discharge of Condition

3. 25 Jul 2026

   Added to PlanIndex

• 25/02600/FULL Granted

  The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

  Extension to the existing external fire escape stairs with inset dormer to provide additional access at roof level.

  Decided 2 Mar 2026 Full applications

Windsor and Maidenhead granted permission on 1 April 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.

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

• The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

  25/02600/FULL Submitted 2 Oct 2025 50 yards away

  Extension to the existing external fire escape stairs with inset dormer to provide additional access at roof level.

  Granted Full applications Extension Loft or dormer 20 docs

• 34 Kingswick Drive Ascot SL5 7BQ

  21/02708/FULL Submitted 6 Sep 2021 50 yards away

  Single storey front porch following demolition of existing element.

  Granted Full applications Extension Demolition 11 docs
  Small domestic

• The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

  25/02127/CPD Submitted 21 Aug 2025 50 yards away

  Certificate of lawfulness to determine whether the proposed internal alterations and alterations to fenestration is lawful.

  Granted Lawful development Windows or glazing 15 docs

• 22 Highclere Sunninghill Ascot SL5 0AA

  20/00608/CPD Submitted 9 Mar 2020 100 yards away

  Certificate of lawfulness to determine whether the proposed single storey side extension with roof lantern is lawful.

  Granted Lawful development Extension Windows or glazing 9 docs
  Small domestic

• 19 Kingswick Drive Ascot SL5 7BQ

  21/01583/FULL Submitted 24 May 2021 100 yards away

  Two storey side extension and a single storey rear extension.

  Granted Full applications Extension 9 docs
  Small domestic

• Kingswick Annexe Kingswick Drive Ascot

  23/01635/CONDIT Submitted 4 Jul 2023 150 yards away

  Details required by Condition 2 (Matching Materials); Condition 3 (Parking And Turning); Condition 4 (Visibility Splays); Condition 6 (Landscaping); Condition 7 (Cycle Parking) and Condition 8 (Refuse And Recycling Facilities) of planning permission 19/02853/FULL for a change of use of the existing ground floor from office (B1) to residential (C3) to create x5 flats and part change of use of the existing first floor from residential (C3) to office (B1). Single storey extensions to the North East, South West and South East elevations, new second floor terrace to the North East elevation, x1 dormer to the South East elevation, x1 dormer to the North West elevation and alterations to fenestration, following demolition of the existing garage and shed.

  Refused Conditions New dwelling Extension +3 4 docs
  Small domestic

• 26/02463/CONDIT Awaiting decision

  Land Adjacent To 4 Block D Cavalry Crescent Windsor

  Details required by Condition 2 (Contaminated Land) of planning permission 23/01817/FULL for 2no. three bedroom dwellings with associated parking and landscaping following the demolition of the existing garage block.

  Received 8 Oct, published by the council 12 Oct 2026 Conditions
• 26/02232/CONDIT Granted

  Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

  Details required by Condition 3 (Bat Licence) of planning permission 23/03099/FULL for the enlargement of existing lower ground floor, two storey front extension with front gable, single storey rear extension with balustrade, 2no. proposed rear dormers, , 3no. chimneys, raised terrace with balustrade, steps and conversion of existing garage to an annex ancillary to main dwelling with new roof, alterations to fenestration and external finishes, replacement garage, new EV charger, hardstanding, landscaping, retaining wall and boundary treatment to front, following demolition of existing elements.

  Received 9 Sep, published by the council 12 Sep 2026 Conditions
• 26/02217/CONDIT Granted

  Land South of Kimbers Lane Maidenhead

  Details required by Condition 25 (Bat Licence confirmation) of planning permission 24/02786/FULL for a Full planning application for 225 dwellings together with access, landscaping, open space, parking and associated infrastructure.

  Received 8 Sep, published by the council 12 Sep 2026 Conditions
• 26/02209/CONDIT Granted

  Southleigh & Willianns High Street Cookham Maidenhead

  Details required by Condition 4 (Roof tiles) and 8 (Biodiversity enhancements) of planning permission 25/03339/FULL for a Two storey rear extensions with 1no. Juliet balcony. A loft conversion with 2no. rear rooflights to Southleigh.

  Received 8 Sep, published by the council 12 Sep 2026 Conditions
• 26/02455/CONDIT Awaiting decision

  Bisham Abbey Bisham Village Marlow Road Bisham Marlow SL7 1RR

  Details required by Condition 2 (Ecology) of listed building consent 26/01697/LBC for roof repairs including renewal of the lead coverings to Roofs O1, O2 and O3, replacement of the modern Roof M with a new lead roof, localised repairs to other lead and felt roofs, and replacement of defective clay roof tiles. Localised repairs to masonry, windows, joinery, rainwater goods and soil pipes. Replacement of the external fire escape stair and installation of new roof access hatches and permanent mansafe systems to facilitate future inspection and maintenance.

  Received 7 Oct, published by the council 12 Oct 2026 Conditions