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Planning application

Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

Refused Windsor and Maidenhead 23/01626/CPD Cert of Lawfulness of Proposed Dev

Works: Extension 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 alterations to lower ground floor to provide additional floor space, single storey rear extension and 2no. detached outbuilding ancillary to the main dwelling are lawful.

As published by the council, reference 23/01626/CPD

Application record

Reference
23/01626/CPD
Type
Cert of Lawfulness of Proposed Dev
Status
Decided
Decision
Refuse
Received
4 Jul 2023
Validated
6 Jul 2023
Decided
12 Jul 2023
Ward
Bisham And Cookham
Parish
Cookham Parish
Decision by
Delegated
Postcode
SL6 9TR

Site history

Applications at this address on the Windsor and Maidenhead register

This site has had 7 applications since 2023: 2 approved, 1 refused.

  • 26/02232/CONDIT Awaiting decision

    Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    Details required by Condition 3 (Bat Licence) of planning permission 23/03099/FULL for the enlargement of existing lower ground floor, two storey front extension with front gable, single storey rear extension with balustrade, 2no. proposed rear dormers, , 3no. chimneys, raised terrace with balustrade, steps and conversion of existing garage to an annex ancillary to main dwelling with new roof, alterations to fenestration and external finishes, replacement garage, new EV charger, hardstanding, landscaping, retaining wall and boundary treatment to front, following demolition of existing elements.

    Submitted 9 Sep 2026 Conditions
  • 26/02031/CONDIT Awaiting decision

    Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    Details required by Condition 4 (External Lighting) and Condition 5 (Biodiversity Enhancements) of planning permission 23/03099/FULL for the enlargement of existing lower ground floor, two storey front extension with front gable, single storey rear extension with balustrade, 2no. proposed rear dormers, , 3no. chimneys, raised terrace with balustrade, steps and conversion of existing garage to an annex ancillary to main dwelling with new roof, alterations to fenestration and external finishes, replacement garage, new EV charger, hardstanding, landscaping, retaining wall and boundary treatment to front, following demolition of existing elements.

    Submitted 17 Aug 2026 Conditions
  • 26/01923/FULL Awaiting decision

    Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    Part single part two storey rear/side extension, new steps, rear terrace with balustrades and alterations to fenestration following demolition of existing elements.

    Submitted 4 Aug 2026 Full applications
  • 23/02203/FULL Withdrawn

    Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    Enlargement of existing lower ground floor, two storey front extension with front gable, single storey wraparound extension (side/rear/side), first floor side extensions, enlargement of roof space to include 2no. rear dormers, 3no. chimneys, raised terrace with balustrade, steps and conversion of existing garage to an annex ancillary to main dwelling with new roof, alterations to fenestration and external finishes, replacement garage, new EV charger, hardstanding, landscaping, retaining wall and boundary treatment to front, following demolition of existing elements.

    Decided 25 Oct 2023 Full applications
  • 23/01855/CPD Granted

    Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    Certificate of lawfulness to determine whether the single storey rear extension and 2no. detached outbuildings incidental to the main dwelling and the removal of the existing cat-slide roof projections to the rear are lawful.

    Decided 17 Aug 2023 Lawful development
  • 23/00332/FULL Granted

    Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    Two and a half storey front extension with gable, 2 no. single storey side extensions, enlargement of the existing first floor with 2 no. first floor side extensions, 2 no. rear dormers, Garage conversion with new roof to provide ancillary accommodation, 1 no. replacement garage, enlargement of existing patio, new hardstanding and steps, alterations to fenestration and external finishes following demolition of existing elements.

    Decided 29 Jun 2023 Full applications

Timeline

Dates from the published record

  1. 4 Jul 2023

    Received by Windsor and Maidenhead

  2. 6 Jul 2023

    Validated

    Checked as complete and ready for consideration.

  3. 12 Jul 2023

    Decision issued: Refuse

  4. 12 Sep 2026

    Added to PlanIndex

Documents

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

29 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 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

  • Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    23/00332/FULL Submitted 7 Feb 2023 0m away

    Two and a half storey front extension with gable, 2 no. single storey side extensions, enlargement of the existing first floor with 2 no. first floor side extensions, 2 no. rear dormers, Garage conversion with new roof to provide ancillary accommodation, 1 no. replacement garage, enlargement of existing patio, new hardstanding and steps, alterations to fenestration and external finishes following demolition of existing elements.

    Granted Full applications Extension Loft or dormer +3 60 docs
    Small domestic

  • Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    26/02232/CONDIT Submitted 9 Sep 2026 1m away

    94% historically approved · decision due ~4 Nov

    Details required by Condition 3 (Bat Licence) of planning permission 23/03099/FULL for the enlargement of existing lower ground floor, two storey front extension with front gable, single storey rear extension with balustrade, 2no. proposed rear dormers, , 3no. chimneys, raised terrace with balustrade, steps and conversion of existing garage to an annex ancillary to main dwelling with new roof, alterations to fenestration and external finishes, replacement garage, new EV charger, hardstanding, landscaping, retaining wall and boundary treatment to front, following demolition of existing elements.

    Awaiting decision Conditions Extension Loft or dormer +3 4 docs
    Small domestic

  • Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    23/02203/FULL Submitted 8 Sep 2023 1m away

    Enlargement of existing lower ground floor, two storey front extension with front gable, single storey wraparound extension (side/rear/side), first floor side extensions, enlargement of roof space to include 2no. rear dormers, 3no. chimneys, raised terrace with balustrade, steps and conversion of existing garage to an annex ancillary to main dwelling with new roof, alterations to fenestration and external finishes, replacement garage, new EV charger, hardstanding, landscaping, retaining wall and boundary treatment to front, following demolition of existing elements.

    Withdrawn Full applications Extension Loft or dormer +3 47 docs
    Small domestic

  • Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    26/02031/CONDIT Submitted 17 Aug 2026 1m away

    94% historically approved · decision due ~12 Oct

    Details required by Condition 4 (External Lighting) and Condition 5 (Biodiversity Enhancements) of planning permission 23/03099/FULL for the enlargement of existing lower ground floor, two storey front extension with front gable, single storey rear extension with balustrade, 2no. proposed rear dormers, , 3no. chimneys, raised terrace with balustrade, steps and conversion of existing garage to an annex ancillary to main dwelling with new roof, alterations to fenestration and external finishes, replacement garage, new EV charger, hardstanding, landscaping, retaining wall and boundary treatment to front, following demolition of existing elements.

    Awaiting decision Conditions Extension Loft or dormer +3 4 docs
    Small domestic

  • Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    23/01855/CPD Submitted 31 Jul 2023 1m away

    Certificate of lawfulness to determine whether the single storey rear extension and 2no. detached outbuildings incidental to the main dwelling and the removal of the existing cat-slide roof projections to the rear are lawful.

    Granted Lawful development Extension 9 docs
    Small domestic

  • Riverside Gibraltar Lane Cookham Maidenhead SL6 9TR

    26/01923/FULL Submitted 4 Aug 2026 1m away

    71% historically approved · decision due ~5 Oct

    Part single part two storey rear/side extension, new steps, rear terrace with balustrades and alterations to fenestration following demolition of existing elements.

    Awaiting decision Full applications Extension Demolition +1 12 docs

In Windsor and Maidenhead

  • 26/01553/CLU Granted

    64 Priors Way Maidenhead SL6 2EN

    Certificate of lawfulness to determine whether the existing use of building as self-contained residential dwelling as per details set out in Statutory Declaration is lawful.

    24 Jun 2026 Lawful development
  • 26/02230/CPD Awaiting decision

    15 Castle Avenue Datchet Slough SL3 9BA

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

    9 Sep 2026 Lawful development
  • 26/01039/CPD Refused

    Touchen End House Ascot Road Holyport Maidenhead SL6 3JY

    Certificate of lawfulness to determine whether the proposed outbuilding following demolition of existing garage is lawful.

    28 Apr 2026 Lawful development
  • 26/02205/CPD Awaiting decision

    15 Warrington Spur Old Windsor Windsor SL4 2NF

    Certificate of lawfulness to determine whether the proposed new driveway is lawful.

    7 Sep 2026 Lawful development
  • 26/01648/CPD Granted

    38 Tilstone Close Eton Wick Windsor SL4 6NG

    Certificate of lawfulness to determine whether the proposed formation of habitable room in roofspace with side dormer, 1 No front and side rooflights, 1 No. rear window and part hip to gable is lawful.

    6 Jul 2026 Lawful development