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Planning application

Guardians Broomfield Park Sunningdale Ascot SL5 0JS

Refused Windsor and Maidenhead 25/03181/CPD Cert of Lawfulness of Proposed Dev

Works: Extension Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Certificate of lawfulness to determine whether the proposed single storey rear extension with canopy, new flat roof and replacement of the rear window to a sliding door to the existing single storey rear element are lawful.

As published by the council, reference 25/03181/CPD

Application record

Reference
25/03181/CPD
Type
Cert of Lawfulness of Proposed Dev
Status
Decided
Decision
Refuse
Received
4 Dec 2025
Validated
4 Dec 2025
Decided
2 Jan 2026
Ward
Sunningdale And Cheapside
Parish
Sunningdale Parish
Decision by
Delegated
Postcode
SL5 0JS

Site history

Applications at this address on the Windsor and Maidenhead register

This site has had 5 applications since 2021: 3 approved, 2 refused.

  • 26/00707/FULL Granted

    Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    Single storey side/rear extension with canopy, new flat roof to existing rear element and alterations to fenestration and external finishes.

    Decided 15 May 2026 Full applications
  • 26/00032/CPD Refused

    Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    Certificate of lawfulness to determine whether the proposed single storey rear extension with canopy, new flat roof, replacement windows to all elevations and new render and timber boarding are lawful.

    Decided 4 Mar 2026 Lawful development
  • 22/00174/FULL Granted

    Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    Replacement front/side boundary treatment.

    Decided 17 Jun 2022 Full applications
  • 21/03223/FULL Granted

    Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    Loft conversion with new and replacement rooflights.

    Decided 21 Dec 2021 Full applications

Timeline

Dates from the published record

  1. 4 Dec 2025

    Received by Windsor and Maidenhead

  2. 2 Jan 2026

    Decision issued: Refuse

  3. 11 Aug 2026

    Added to PlanIndex

Documents

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

18 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 refusal means

Windsor and Maidenhead refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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

  • Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    26/00032/CPD Submitted 7 Jan 2026 0m away

    Certificate of lawfulness to determine whether the proposed single storey rear extension with canopy, new flat roof, replacement windows to all elevations and new render and timber boarding are lawful.

    Refused Lawful development Extension Roofing +1 17 docs
    Small domestic

  • Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    22/00174/FULL Submitted 24 Jan 2022 9m away

    Replacement front/side boundary treatment.

    Granted Full applications 34 docs

  • Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    21/03223/FULL Submitted 28 Oct 2021 13m away

    Loft conversion with new and replacement rooflights.

    Granted Full applications Loft or dormer 16 docs

  • Guardians Broomfield Park Sunningdale Ascot SL5 0JS

    26/00707/FULL Submitted 18 Mar 2026 19m away

    Single storey side/rear extension with canopy, new flat roof to existing rear element and alterations to fenestration and external finishes.

    Granted Full applications Extension Windows or glazing 24 docs
    Small domestic

  • 16 Redwood Drive Sunningdale Ascot SL5 0LW

    21/02704/TPO Submitted 3 Sep 2021 49m away

    (T1) Sweet Chestnut - cut back overhanging branches to boundary (TPO 78 of 1983).

    Granted Trees 14 docs

  • 16 Redwood Drive Sunningdale Ascot SL5 0LW

    24/02410/TPO Submitted 3 Oct 2024 49m away

    (T1) London Plane - Reduce height and spread by up to 3.5m, leaving 17m height and radial spread house side 8-9m, pruning back to growth points. (078/1983/TPO)

    Granted Trees 8 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