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Planning application

Westchase Sunning Avenue Sunningdale Ascot SL5 9PW

Awaiting decision Windsor and Maidenhead 26/01780/FULL Full

Works: Extension Loft or dormer Small domestic

Read from the description, not a valuation. How we read the register

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

Proposal

Single storey rear extension, 1no. side dormer, raising of the existing terrace and 1no. detached outbuilding ancillary to the main dwelling following the removal of the existing elements.

As published by the council, reference 26/01780/FULL

Application record

Reference
26/01780/FULL
Type
Full
Status
Awaiting decision
Received
21 Jul 2026
Validated
3 Aug 2026
Ward
Sunningdale And Cheapside
Parish
Sunningdale Parish
Postcode
SL5 9PW

Timeline

Dates from the published record

  1. 21 Jul 2026

    Received by Windsor and Maidenhead

  2. 3 Aug 2026

    Validated

    Checked as complete and ready for consideration.

  3. 11 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 28 September 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

15 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 documents

What happens while it is decided

The process from here

This application is with Windsor and Maidenhead for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • 1 Pinecote Drive Sunningdale Ascot SL5 9PS

    22/03001/FULL Submitted 10 Nov 2022 59m away

    x1 Detached six bedroom dwelling with associated garaging following the demolition of the existing dwelling

    Withdrawn Full applications Demolition 23 docs
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  • Brook Cottage Sunning Avenue Sunningdale Ascot SL5 9QE

    21/02794/TPO Submitted 14 Sep 2021 75m away

    T1 - Oak - Crown reduction over chimney by 2m and overall by 1m, remove dead, dying and diseased wood. (TPO 44 of 2003)

    Granted Trees 7 docs

  • Oaks Ballencrieff Road Sunningdale Ascot SL5 9RA

    22/02727/FULL Submitted 10 Oct 2022 83m away

    2no. dwellings, 2no.garages and associated access and landscape following the demolition of the existing dwelling.

    Withdrawn Full applications Demolition 35 docs
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  • 6 Hillhampton Place Sunningdale Ascot SL5 9TL

    22/01197/TPO Submitted 3 May 2022 104m away

    (T30) Pine - fell - 065/1995/TPO.

    Granted Trees 10 docs

  • Howards End Charters Road And Woodford Sunning Avenue Sunningdale Ascot

    26/00687/TPO Submitted 16 Mar 2026 114m away

    (T1 and T2) Lime x 2 - crown reduce by 2m to leave finished height of 23m and finished spread of 11m; (T3) Lime - repollard to previous pruning points to leave finished height of 7m and (T4) Lime - crown reduce overall by 3m to leave finished height of 27m and finished spread of 17m. (018/1991/TPO).

    Refused Trees 7 docs

  • Styles Charters Road Sunningdale Ascot SL5 9QD

    26/00667/TPO Submitted 12 Mar 2026 118m away

    97% historically approved · decision due ~7 May

    (T1) Lime - Reduce height by 7m and reduce spread by 6m to leave finished height of 12m and finished spread of 10m. (T2) Oak - Fell to ground level. (T3) Oak - Remove 2 x lowest branches that have been previously cut back. The two branches have previously been stubbed and it would be more appropriate for these branches to be removed entirely. (T4) Oak - Reduce spread on NW side to previous pruning points to leave finished spread of 5m. (003/2023/TPO)

    Awaiting decision Trees 7 docs

In Windsor and Maidenhead

  • 26/01628/FULL Granted

    25 Bannard Road Maidenhead SL6 4NP

    Single storey rear extension following the demolition of the existing conservatory.

    3 Jul 2026 Full applications
  • 26/01384/FULL Granted

    Stoney Vere Farm House Butchers Lane White Waltham Maidenhead SL6 3SD

    Single storey side extension

    4 Jun 2026 Full applications
  • 26/01674/FULL Granted

    50 Welley Road Wraysbury Staines TW19 5DJ

    Detached annexe to be used ancillary to the main dwelling.

    9 Jul 2026 Full applications
  • 26/01312/FULL Refused

    16 Whyteladyes Lane Cookham Maidenhead SL6 9NA

    Hip to gable, 1no. front dormer, 1no. rear dormer and alterations to fenestration and relocation of PV panels.

    27 May 2026 Full applications
  • 26/01379/FULL Granted

    Lotus Cottage Holyport Street Holyport Maidenhead SL6 2JR

    Part single part two storey part first floor rear/side extension and alterations to fenestration.

    4 Jun 2026 Full applications