Stone Mountain St Leonards Hill Windsor SL4 4AL

1. 5 Sep 2023

   Received by Windsor and Maidenhead

2. 7 Sep 2023

   Validated

   Checked as complete and ready for consideration.

3. 15 Feb 2024

   Decision issued: Permitted Development

4. 8 Sep 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 15 February 2024, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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.

• Castle Peep St Leonards Hill Windsor SL4 4AL

  26/01055/TPO Submitted 29 Apr 2026 39m away

  97% historically approved · decision due ~13 Jul

  (T1) (Red dot) Removal of one Oak tree. (005/1960/TPO)

  Awaiting decision Trees 6 docs

• 1 Coombe Hill Court Windsor SL4 4UL

  22/03164/FULL Submitted 25 Nov 2022 58m away

  Detached outbuilding with gym, sauna and bar ancillary to the main dwelling.

  Granted Full applications 13 docs
  Small domestic

• 1 Coombe Hill Court Windsor SL4 4UL

  22/03163/CPD Submitted 25 Nov 2022 58m away

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

  Refused Lawful development 9 docs

• 54 And Land At 54 Illingworth Windsor SL4 4UP

  24/02366/FULL Submitted 1 Oct 2024 62m away

  Single storey side infill following the demolition of the existing single storey side/rear element to No. 54, 1no. new detached dwelling, new front boundary treatment and 2no. cycle storage sheds.

  Refused Full applications New dwelling Extension +1 17 docs
  Small domestic

• 16 Washington Drive Windsor SL4 4NS

  22/02716/FULL Submitted 7 Oct 2022 62m away

  Two storey side extension with rear balcony and alterations to fenestration.

  Granted Full applications Extension Windows or glazing 16 docs

• 16 Washington Drive Windsor SL4 4NS

  21/02034/FULL Submitted 2 Jul 2021 65m away

  Two storey front/side extension with rear balcony and alterations to fenestration.

  Refused Full applications Extension Windows or glazing 20 docs

• 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.

  25 Feb 2026 Lawful development
• 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.

  17 Jul 2026 Lawful development
• 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.

  1 Jul 2026 Lawful development
• 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 Jun 2026 Lawful development
• 26/02117/CPD Awaiting decision

  27 Tyrell Gardens Windsor SL4 4DH

  Certificate of lawfulness to determine whether the proposed garage conversion is lawful.

  26 Aug 2026 Lawful development