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Planning application

Brendon Station Road Cookham Maidenhead SL6 9BU

Awaiting decision Windsor and Maidenhead 26/02306/CPD Cert of Lawfulness of Proposed Dev

Works: Extension Loft or dormer

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Certificate of lawfulness to determine whether the proposed erection of a hip to gable extension, new rear dormer and 2 No. front rooflights is lawful.

As published by the council, reference 26/02306/CPD

Application record

Reference
26/02306/CPD
Type
Cert of Lawfulness of Proposed Dev
Status
Awaiting decision
Received
21 Sep 2026
Validated
28 Sep 2026
Ward
Bisham And Cookham
Parish
Cookham Parish
Postcode
SL6 9BU

Timeline

Dates from the published record

  1. 21 Sep 2026

    Received by Windsor and Maidenhead

  2. 28 Sep 2026

    Validated

    Checked as complete and ready for consideration.

  3. 4 Oct 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 23 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Windsor and Maidenhead took a median of 56 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Heighway Associates Agent

31 applications on PlanIndex · across 3 councils · 92% granted

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Documents

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

6 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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What happens while it is decided

This application is with Windsor and Maidenhead for determination, against a statutory target of eight weeks. Over the last year Windsor and Maidenhead decided lawful development applications in a median of 50 days. More in our guide to how long planning decisions take.

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

  • 1 Roman Lea Cookham Maidenhead SL6 9BZ

    20/02855/NMA Submitted 29 Oct 2020 50 yards away

    Non material amendment to planning permission 20/00015/FULL to change the number of windows inserted in rear dormer from 1 to 2.

    Granted Amendments Loft or dormer Windows or glazing 6 docs

  • 1 Roman Lea Cookham Maidenhead SL6 9BZ

    20/00015/FULL Submitted 6 Jan 2020 50 yards away

    Single storey side/rear extension, x1 front rooflight and x1 rear dormer.

    Granted Full applications Extension Loft or dormer 21 docs
    Small domestic

  • 1 Roman Lea Cookham Maidenhead SL6 9BZ

    19/02993/CPD Submitted 28 Oct 2019 50 yards away

    Certificate of lawfulness to determine whether the proposed x1 front rooflight, x1 rear dormer with x1 second floor side window to facilitate a loft conversion is lawful.

    Granted Lawful development Loft or dormer Windows or glazing 14 docs

  • Orchard Cottage Station Road Cookham Maidenhead SL6 9BU

    23/00730/FULL Submitted 22 Mar 2023 50 yards away

    Single storey side/rear extension, alterations existing roof of the existing single storey rear extension and to fenestration.

    Granted Full applications Extension Windows or glazing 12 docs
    Small domestic

  • Lavender Cottage Roman Lea Cookham Maidenhead SL6 9BZ

    20/03250/FULL Submitted 2 Dec 2020 50 yards away

    Single storey side extension following demolition of existing element

    Granted Full applications Extension Demolition 12 docs
    Small domestic

  • 6 Roman Lea Cookham Maidenhead SL6 9BZ

    22/02465/CPD Submitted 6 Sep 2022 50 yards away

    Certificate of lawfulness to determine whether the proposed 1no. rear dormer to facilitate a loft conversion is lawful.

    Granted Lawful development Loft or dormer 15 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