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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
Granted As published: 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.

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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 0.3 miles

  • 4 Horseguards Drive Maidenhead SL6 1XL

    25/02717/CPD Submitted 14 Oct 2025 50 yards 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 50 yards 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

  • 7 Medallion Place Maidenhead SL6 1TF

    20/00495/TPO Submitted 20 Feb 2020 100 yards away

    (T1) London Plane: Crown thin by 30%, crown lift to raise crown to 3 metres above conservatory roof, crown reduce width to the boundary of owners garden. TPO (34 of 1999)

    Granted Trees 5 docs

  • The Bridge Clinic Oldfield Lodge Bridge Road Maidenhead SL6 8DG

    23/01570/TCA Submitted 26 Jun 2023 100 yards away

    (T1) Holm Oak - fell.

    Granted Trees 5 docs

  • The Bridge Clinic Oldfield Lodge Bridge Road Maidenhead SL6 8DG

    25/02931/TCA Submitted 5 Nov 2025 100 yards 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 100 yards 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

In Windsor and Maidenhead

  • 26/02222/CPD Refused

    52 Audley Way Ascot SL5 8EF

    Certificate of lawfulness to determine whether the proposed single storey rear extension following the removal of the existing conservatory is lawful.

    Received 8 Sep, published by the council 24 Sep 2026 Lawful development
  • 26/01954/CPD Withdrawn

    Mulberry House Waltham Road Maidenhead SL6 3NH

    Certificate of lawfulness to determine whether the single storey rear extension is lawful.

    Received 7 Aug, published by the council 16 Aug 2026 Lawful development
  • 26/01856/CLU Granted

    Apple Tree Cottage And Land Adjacent To Apple Tree Cottage Paley Street Maidenhead

    Certificate of lawfulness to determine whether the existing use of the land as a residential garden incidental to the main dwelling is lawful

    Received 28 Jul, published by the council 24 Aug 2026 Lawful development
  • 26/02022/CPD Refused

    14 Church View White Waltham Maidenhead SL6 3JQ

    Certificate of lawfulness to determine whether the proposed 1no. rear dormer and alterations to fenestration are lawful

    Received 17 Aug, published by the council 2 Sep 2026 Lawful development
  • 26/01862/CLU Granted

    Holyport Pre School Holyport Youth Club Moneyrow Green Holyport Maidenhead SL6 2NA

    Certificate of lawfulness to determine whether the existing use of the site as a pre-school is lawful.

    Received 29 Jul, published by the council 4 Aug 2026 Lawful development