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Planning application

21/01630/CPD

41 Westwood Green Cookham Maidenhead SL6 9DD

Refused Windsor and Maidenhead Cert of Lawfulness of Proposed Dev

Proposal

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

As published by the council, reference 21/01630/CPD

Timeline

Dates from the published record

  1. 25 May 2021

    Received by Windsor and Maidenhead

  2. 22 Jul 2021

    Decision issued: Refuse

  3. 27 Jul 2026

    Added to PlanIndex

What refusal means

The process from here

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • 21/01713/FULL Granted

    15 Shergold Way Cookham Maidenhead SL6 9NR

    Garage conversion, single storey front extension and alterations to fenestration.

    3 Jun 2021 103m away Full applications
  • 22/03006/FULL Granted

    Greenways Lightlands Lane Cookham Maidenhead SL6 9DH

    x1 detached outbuilding and new gates.

    11 Nov 2022 103m away Full applications
  • 26/00408/TPO Withdrawn

    Alfred Major Recreation Ground High Road Cookham Maidenhead

    T4 - T5 Oak - Tip reduce longest lateral southern side by 2m, leaving a spread of 8m and crown lift to 4m above ground level (030/2008/TPO).

    13 Feb 2026 138m away Trees
  • 26/00892/TPO Granted

    Alfred Major Recreation Ground High Road Cookham Maidenhead

    (G1) Oak - lift to achieve up to 3.5m clearance over the rear garden, no primary branches to be removed. (G2) Oak - prune to give 3.5m clearance over the garden, no primary branches over 5cm in diameter to be removed. (030/2008/TPO).

    8 Apr 2026 143m away Trees
  • 22/02349/NMA Granted

    64 Westwood Green Cookham Maidenhead SL6 9DE

    Non material amendments to planning permission 22/00110/FULL for alterations to fenestration to the rear dormer.

    25 Aug 2022 208m away Amendments
  • 22/03090/FULL Granted

    Hillcrest Stores 13 Hillcrest Avenue Cookham Maidenhead SL6 9NB

    Single storey side extension, rear boundary wall and new access.

    16 Nov 2022 288m away Full applications

In Windsor and Maidenhead

  • 26/01836/CPD Awaiting decision

    Rivendale 22A Gloucester Drive Wraysbury Staines TW18 4TY

    Certificate of lawfulness to determine whether the proposed conversion of the existing garage into habitable space is lawful.

    27 Jul 2026 Lawful development
  • 26/01528/CPD Granted

    Foxley Manor Forest Green Road Holyport Maidenhead SL6 2NW

    Certificate of lawfulness to determine whether the proposed erection of an outbuilding is lawful.

    22 Jun 2026 Lawful development
  • 26/01532/CPD Granted

    72 Highway Avenue Maidenhead SL6 5AQ

    Certificate of Lawfulness to determine whether the proposed rear dormer roof extension and associated internal alterations to enlarge the existing loft accommodation is lawful.

    22 Jun 2026 Lawful development
  • 26/01823/CPD Awaiting decision

    Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

    Certificate of lawfulness to determine whether the proposed garage conversion, alterations to fenestration, 1 no. front dormer and 1 no. rear dormer to facilitate a loft conversion is lawful.

    24 Jul 2026 Lawful development
  • 26/01772/CPD Granted

    18 Broken Furlong Eton Windsor SL4 6PD

    Certificate of lawfulness to determine whether the proposed erection of a single storey rear detached annex to be used incidental with the host dwelling is lawful.

    20 Jul 2026 Lawful development