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Planning application

22/03219/CPD

10 Llanvair Close Ascot SL5 9HX

Granted Windsor and Maidenhead Cert of Lawfulness of Proposed Dev

Proposal

Certificate of lawfulness to determine whether the proposed outbuilding with paved patio area and external swimming pool is lawful.

As published by the council, reference 22/03219/CPD

Timeline

Dates from the published record

  1. 1 Dec 2022

    Received by Windsor and Maidenhead

  2. 5 Dec 2022

    Validated

    Checked as complete and ready for consideration.

  3. 31 Jan 2023

    Decision issued: Permitted Development

  4. 27 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

  • 21/00983/FULL Granted

    Sanderling Cottage 8 Llanvair Close Ascot SL5 9HX

    Part single part two storey side extension with x1 rear juliet balcony, alterations to the existing garage comprising of x2 dormers and x3 rooflights and alterations to external finishes.

    29 Mar 2021 27m away Full applications
  • 22/02327/TPO Refused

    13 Llanvair Close Ascot SL5 9HX

    T1 - Red Oak - crown reduction by 2m, to leave a final height of 18m and spread of 18m, crown lifting up to 4m from ground level, G1 - Group of Pines - crown lifting up to 4.5m from ground level and remove broken and snapped branches, G2 - Group of Pines - crown lifting up to 4.5m from ground level and remove broken and snapped branches (011/2014/TPO).

    23 Aug 2022 107m away Trees
  • 23/00369/FULL Granted

    13 Llanvair Close Ascot SL5 9HX

    New front entrance canopy, first floor front extension, part two storey, part single storey rear extension with 2no.Juliet balconies and alterations to the external finish and fenestration following the demolition of the existing front canopy and rear conservatory.

    9 Feb 2023 111m away Full applications
  • 26/00459/CONDIT Granted

    7 Llanvair Close Ascot SL5 9HX

    Details required by Condition 6 (Reasonable Avoidance Method Statement) of planning permission 25/02930/FULL for Raising of the ridge, part two storey part first floor rear/side extension, 1no. side dormer, 1 no. rear dormer, relocated front door with new step and canopy, 2 no. side canopies, alterations to fenestration, hardstanding, steps and balustrades.

    20 Feb 2026 115m away Conditions
  • 26/00816/CONDIT Granted

    7 Llanvair Close Ascot SL5 9HX

    Details required by Condition (8) (Biodiversity enhancements) of planning permission (25/02930/FULL) for (Raising of the ridge, part two storey part first floor rear/side extension, 1no. side dormer, 1 no. rear dormer, relocated front door with new step and canopy, 2 no. side canopies, alterations to fenestration, hardstanding, steps and balustrades).

    30 Mar 2026 115m away Conditions
  • 22/03207/FULL Granted

    3 Llanvair Close Ascot SL5 9HX

    Single storey front extension, part single part two storey side/rear extension, x1 new detached garage, enlargement of existing dropped kerb, new entrance piers and alterations to fenestration following demolition of existing elements (part retrospective).

    30 Nov 2022 118m 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