27 Tyrell Gardens Windsor SL4 4DH

1. 26 Aug 2026

   Received by Windsor and Maidenhead

2. 8 Sep 2026

   Added to PlanIndex

3. 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 56 days over the applications it decided in the last year.

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.

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.

• 22 Tyrell Gardens Windsor SL4 4DH

  26/00356/FULL Submitted 10 Feb 2026 50 yards away

  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 docs
  Small domestic

• 22 Tyrell Gardens Windsor SL4 4DH

  22/00904/FULL Submitted 1 Apr 2022 50 yards away

  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 docs
  Small domestic

• 5 Bell View Close Windsor SL4 4EX

  23/02398/FULL Submitted 2 Oct 2023 50 yards away

  Conversion and extension of existing garage to annex ancillary to the main dwelling and 1no. detached outbuilding

  Granted Full applications Extension 31 docs
  Small domestic

• 7 Bell View Close Windsor SL4 4EX

  23/01497/FULL Submitted 21 Jun 2023 50 yards away

  New attached garage following demolition of existing detached garage.

  Granted Full applications Demolition 9 docs

• Canbrae 8 Bell View Close Windsor SL4 4EX

  26/00587/CPD Submitted 4 Mar 2026 50 yards away

  Certificate of lawfulness to determine whether the proposed detached outbuilding incidental to the main dwelling is lawful.

  Refused Lawful development 8 docs
  Small domestic

• Canbrae 8 Bell View Close Windsor SL4 4EX

  26/00586/FULL Submitted 4 Mar 2026 50 yards away

  Detached outbuilding ancillary to the main dwelling.

  Granted Full applications 14 docs
  Small domestic

• 26/02222/CPD Refused

  52 Audley Way Ascot SL5 8EF

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

  Received 8 Sep, published by the council 24 Sep 2026 Lawful development
• 26/01954/CPD Withdrawn

  Mulberry House Waltham Road Maidenhead SL6 3NH

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

  Received 7 Aug, published by the council 16 Aug 2026 Lawful development
• 26/01856/CLU Granted

  Apple Tree Cottage And Land Adjacent To Apple Tree Cottage Paley Street Maidenhead

  Certificate of lawfulness to determine whether the existing use of the land as a residential garden incidental to the main dwelling is lawful

  Received 28 Jul, published by the council 24 Aug 2026 Lawful development
• 26/02022/CPD Refused

  14 Church View White Waltham Maidenhead SL6 3JQ

  Certificate of lawfulness to determine whether the proposed 1no. rear dormer and alterations to fenestration are lawful

  Received 17 Aug, published by the council 2 Sep 2026 Lawful development
• 26/01862/CLU Granted

  Holyport Pre School Holyport Youth Club Moneyrow Green Holyport Maidenhead SL6 2NA

  Certificate of lawfulness to determine whether the existing use of the site as a pre-school is lawful.

  Received 29 Jul, published by the council 4 Aug 2026 Lawful development