The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

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

• 26/00597/CONDIT Granted

  The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

  Details required by Condition 4 (Biodiversity enhancements) of planning permission 25/02600/FULL for an Extension to the existing external fire escape stairs with inset dormer to provide additional access at roof level.

  Decided 1 Apr 2026 Conditions
• 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. 2 Oct 2025

   Received by Windsor and Maidenhead

2. 2 Mar 2026

   Decision issued: Application Permitted

3. 11 Aug 2026

   Added to PlanIndex

1 later application on the register refers to this one:

• 26/00597/CONDIT Granted

  The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

  Details required by Condition 4 (Biodiversity enhancements) of planning permission 25/02600/FULL for an Extension to the existing external fire escape stairs with inset dormer to provide additional access at roof level.

  Decided 1 Apr 2026 Conditions

Windsor and Maidenhead granted permission on 2 March 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 full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

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

  26/00597/CONDIT Submitted 5 Mar 2026 50 yards away

  Details required by Condition 4 (Biodiversity enhancements) of planning permission 25/02600/FULL for an Extension to the existing external fire escape stairs with inset dormer to provide additional access at roof level.

  Granted Conditions Extension Loft or dormer 8 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

• 26/02029/FULL Granted

  5 Kimber Close Windsor SL4 4BJ

  Single storey rear extension.

  Received 17 Aug, published by the council 27 Aug 2026 Full applications
• 26/01955/FULL Granted

  2 Holmlea Road Datchet Slough SL3 9HQ

  Change of use from a dwellinghouse (Use Class C3) to a children's home (Use Class C2) for up to three children, together with conversion of the garage to an office with an en-suite facilities and alterations to fenestration.

  Received 7 Aug, published by the council 27 Aug 2026 Full applications
• 26/01121/FULL Granted

  Zain House 15 Wilton Crescent Windsor SL4 4YJ

  Single storey side/front extension, first floor extension over existing side element with 1no. Juliet balcony and 1no. Juliet balcony to existing rear elevation.

  Received 6 May, published by the council 11 Aug 2026 Full applications
• 26/01977/FULL Granted

  9 St Marks Place Windsor SL4 3BG

  Garage conversion and alterations to fenestration.

  Received 11 Aug, published by the council 24 Aug 2026 Full applications
• 26/01804/FULL Granted

  16 Devereux Road Windsor SL4 1JJ

  Installation of air conditioning compressor unit to the first floor side elevation.

  Received 23 Jul, published by the council 24 Aug 2026 Full applications