Planning application
27 Tyrell Gardens Windsor SL4 4DH
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 garage conversion is lawful.
As published by the council, reference 26/02117/CPD
Application record
- Reference
- 26/02117/CPD
- Type
- Cert of Lawfulness of Proposed Dev
- Status
- Awaiting decision
- Received
- 26 Aug 2026
- Validated
- 26 Aug 2026
- Ward
- Clewer East
- Parish
- Windsor Unparished
- Postcode
- SL4 4DH
Timeline
Dates from the published record
-
26 Aug 2026
Received by Windsor and Maidenhead
-
8 Sep 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 21 October 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 55 days over the applications it decided in the last year.
Documents
Plans, drawings, consultee responses and the officer's report
5 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 documentsWhat 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 500 metres
-
22 Tyrell Gardens Windsor SL4 4DH
Single storey side/rear extension, new mono pitched roof to front elevation, 1no. detached outbuilding ancillary to the main dwelling and alterations to fenestration.
Granted Full applications Extension Windows or glazing 7 docsSmall domestic -
22 Tyrell Gardens Windsor SL4 4DH
Single storey rear/side extension, garage conversion. 3No new roof lights, new canopy to front elevation and new outbuilding ancillary to main dwelling.
Granted Full applications Extension Loft or dormer +1 7 docsSmall domestic -
Canbrae 8 Bell View Close Windsor SL4 4EX
Certificate of lawfulness to determine whether the proposed detached outbuilding incidental to the main dwelling is lawful.
Refused Lawful development 8 docsSmall domestic -
Canbrae 8 Bell View Close Windsor SL4 4EX
Detached outbuilding ancillary to the main dwelling.
Granted Full applications 14 docsSmall domestic -
Canbrae 8 Bell View Close Windsor SL4 4EX
Enlargement of the existing roofspace with 1no. rear Juliet balcony, 1no. additional side dormer, and a detached outbuilding ancillary to the main dwelling (Part Retrospective).
Refused Full applications Loft or dormer 34 docsSmall domestic -
Canbrae 8 Bell View Close Windsor SL4 4EX
Single storey front extension with new mono pitched roof, single storey rear extension with 3no. air condenser units to flat roof, raising of the ridge, hip to gable, 2no. side dormers, 1no. rear Juliet balcony and alterations to the existing garage, external finish and fenestration following the demolition of existing elements.
Granted Full applications Extension Loft or dormer +2 49 docsSmall domestic
Other lawful development applications
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.
-
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.
-
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.
-
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.
-
26/02105/CLD Awaiting decision
19 North Dean Maidenhead SL6 7JD
Certificate of lawfulness to determine whether the existing installation of an air-to-air heat pump (reversible air conditioning) condenser unit to the external east gable wall, including wall brackets, pipework, and associated fittings is lawful.