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Planning application

20 Horseguards Drive Maidenhead SL6 1XL

Granted Windsor and Maidenhead 21/02657/CPD Cert of Lawfulness of Proposed Dev

Works: Loft or dormer

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

Proposal

Certificate of lawfulness to determine whether the erection of two rear dormers with Juliet balconies and 5 No. front rooflights to facilitate a loft conversion and a garage conversion to habitable room is lawful

As published by the council, reference 21/02657/CPD

Application record

Reference
21/02657/CPD
Type
Cert of Lawfulness of Proposed Dev
Status
Decided
Decision
Permitted Development
Received
31 Aug 2021
Validated
31 Aug 2021
Decided
25 Oct 2021
Ward
St Marys
Parish
Maidenhead Unparished
Decision by
Delegated
Postcode
SL6 1XL

Timeline

Dates from the published record

  1. 31 Aug 2021

    Received by Windsor and Maidenhead

  2. 25 Oct 2021

    Decision issued: Permitted Development

  3. 16 Aug 2026

    Added to PlanIndex

Documents

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

9 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 25 October 2021, 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

  • 4 Horseguards Drive Maidenhead SL6 1XL

    25/02717/CPD Submitted 14 Oct 2025 33m away

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

    Granted Lawful development Windows or glazing 5 docs
  • 7 Horseguards Drive Maidenhead SL6 1XL

    22/01290/FULL Submitted 13 May 2022 56m away

    Two storey rear extension to include x2 Juliette balcony, raised decking, new steps and alterations to fenestration on first floor level.

    Granted Full applications Extension Windows or glazing 9 docs
  • The Bridge Clinic Oldfield Lodge Bridge Road Maidenhead SL6 8DG

    25/02931/TCA Submitted 5 Nov 2025 87m away

    T10 - Sycamore - Remove basal growth T20 - Horse Chestnut - Reduce extended limb on to north by a maximum of 2m T29 - Sycamore- Remove basal growth T33 and T34 - Portuguese Laure -l Trim as necessary T35 - London Plane - Crown Lift to a height of 3.5-4m over ground level and tip reduce branches on southern side to provide a clearance of 2m over the archway and 2-3m from Oldfield lodge, remove any dead and broken branches T50 - Contorted Willow - Fell T71 - Smoke bush - Fell T55 - Poplar aurora - Fell T155 - Sweet Gum - Prune away from building T159 - Goat Willow - Fell T662 - Ash - Fell T191 - Goat Willow - Fell

    Granted Trees 7 docs
  • The Bridge Clinic Oldfield Lodge Bridge Road Maidenhead SL6 8DG

    23/00653/TCA Submitted 10 Mar 2023 89m away

    (T6 - Scots Pine) (T7 - Yew) (T23 - Sycamore) (T186 - Sweet Gum) (T40 - Lime) (T662 - Ash) (T49 - Ash) (T664 - Oak) - Please refer to survey.

    Granted Trees 5 docs
  • 9 Medallion Place Maidenhead SL6 1TF

    26/01220/TPO Submitted 14 May 2026 92m away

    97% historically approved · decision due ~9 Jul

    T1 - Black Walnut - Crown reduction by 3-4m on eastern side to a final height of 29m and spread of 16m (033/2002/TPO), T2 - Black Walnut - Crown reduction by 3m on eastern and western side to leave a final height of 20m and spread of 16m (059/2005/TPO).

    Awaiting decision Trees 5 docs
  • Oldfield Lodge Bridge Road Maidenhead SL6 8DG

    21/03730/FULL Submitted 23 Dec 2021 93m away

    The provision of additional parking spaces and relocation of the existing bin store.

    Granted Full applications 44 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