Skip to content
PlanIndex Get alerts
Menu

Planning application

The Marist Senior School Kings Road Sunninghill Ascot SL5 7PS

Granted Windsor and Maidenhead 25/02127/CPD Cert of Lawfulness of Proposed Dev

Works: Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

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

As published by the council, reference 25/02127/CPD

Application record

Reference
25/02127/CPD
Type
Cert of Lawfulness of Proposed Dev
Status
Decided
Decision
Permitted Development
Received
21 Aug 2025
Validated
27 Aug 2025
Decided
10 Sep 2025
Ward
Ascot & Sunninghill
Parish
Sunninghill And Ascot Parish
Decision by
Delegated
Postcode
SL5 7PS

Site history

Applications at this address on the Windsor and Maidenhead register

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
  • 25/02600/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

Timeline

Dates from the published record

  1. 21 Aug 2025

    Received by Windsor and Maidenhead

  2. 27 Aug 2025

    Validated

    Checked as complete and ready for consideration.

  3. 10 Sep 2025

    Decision issued: Permitted Development

  4. 11 Aug 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

15 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

What this grant of permission means

Windsor and Maidenhead granted permission on 10 September 2025, 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.

About lawful development applications

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.

Nearby applications

Within 500 metres

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

    25/02600/FULL Submitted 2 Oct 2025 68m 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

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

    26/00597/CONDIT Submitted 5 Mar 2026 68m 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 115m away

    Single storey front porch following demolition of existing element.

    Granted Full applications Extension Demolition 11 docs
    Small domestic

  • 28 Highclere Sunninghill Ascot SL5 0AA

    22/00857/FULL Submitted 28 Mar 2022 123m away

    Garage conversion, single storey front/side infill extension, single storey side/rear extension, 1no. rear Juliet balcony, replacement roof with raised ridge height, 2no. front dormers, alterations to fenestration.

    Granted Full applications Extension Loft or dormer +2 14 docs
    Small domestic

  • 19 Kingswick Drive Ascot SL5 7BQ

    21/01583/FULL Submitted 24 May 2021 161m away

    Two storey side extension and a single storey rear extension.

    Granted Full applications Extension 9 docs
    Small domestic

  • 10 Sunninghill Road Sunninghill Ascot SL5 7BU

    23/00034/FULL Submitted 6 Jan 2023 213m away

    x1 rear dormer to accommodate a loft conversion and alterations to fenestration.

    Granted Full applications Loft or dormer Windows or glazing 15 docs

In Windsor and Maidenhead

  • 26/00501/CPU Refused

    143 Cookham Road Maidenhead SL6 7EU

    Certificate of lawfulness to determine whether the proposed use of the dwelling as a small childrens home for up to two children and two carers is lawful.

    25 Feb 2026 Lawful development
  • 26/01763/CPU Refused

    Land At The Junction of Warners Hill And Dean Lane Cookham Maidenhead

    Certificate of lawfulness to determine whether the proposed use of the land as an orchard with mobile poultry run and polytunnel is lawful.

    17 Jul 2026 Lawful development
  • 26/01615/CLU Granted

    Riding Court Farm Riding Court Riding Court Road Datchet Slough SL3 9JT

    Certificate of lawfulness to determine whether the existing units 'JKL' (use class B8) used for storage and distribution; unit 'AB' (use class B8) used for hiring, maintaining, and cleaning concrete screed and machinery and 'storage yard 2' (use class B8) used for the storage of scaffolding is lawful.

    1 Jul 2026 Lawful development
  • 26/01581/CLD Granted

    The George Public House The Brewhouse The Green Holyport Road Holyport Maidenhead

    Certificate of lawfulness to determine whether the existing bollard is lawful.

    26 Jun 2026 Lawful development
  • 26/02117/CPD Awaiting decision

    27 Tyrell Gardens Windsor SL4 4DH

    Certificate of lawfulness to determine whether the proposed garage conversion is lawful.

    26 Aug 2026 Lawful development