23 Upcroft Windsor SL4 3NH

1. 28 Oct 2025

   Received by Windsor and Maidenhead

2. 10 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 3 Dec 2025

   Decision issued: Application Permitted

4. 11 Aug 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 3 December 2025, 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.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• 17 Upcroft Windsor SL4 3NH

  26/00421/PDXL Submitted 16 Feb 2026 50 yards away

  Single storey rear extension no greater than 5m in depth, 3m high with an eaves height of 3m.

  Granted Prior approval Extension 19 docs
  Small domestic

• 33 Upcroft Windsor SL4 3NH

  21/00716/FULL Submitted 9 Mar 2021 50 yards away

  Single storey rear extension, garage conversion into habitable accommodation and x1 new rooflight following demolition of existing element.

  Withdrawn Full applications Extension Loft or dormer +1
  Small domestic

• 33 Upcroft Windsor SL4 3NH

  21/03481/PDXL Submitted 25 Nov 2021 50 yards away

  Single storey rear extension no greater than 6.00m in depth, 3.00m high with an eaves height of 3.00m.

  Granted Prior approval Extension 10 docs
  Small domestic

• 33 Upcroft Windsor SL4 3NH

  21/00936/CPD Submitted 24 Mar 2021 50 yards away

  Certificate of lawfulness to determine whether the single storey rear extension, part garage conversion and x1 new rooflight following demolition of existing element is lawful.

  Granted Lawful development Extension Loft or dormer +1 24 docs
  Small domestic

• 26 Upcroft Windsor SL4 3NQ

  22/02883/FULL Submitted 27 Oct 2022 100 yards away

  Single storey front extension, part single, part two storey rear extension and x1 rear dormer to accommodate the loft conversion

  Refused Full applications Extension Loft or dormer 16 docs
  Small domestic

• 26 Upcroft Windsor SL4 3NQ

  23/00249/FULL Submitted 30 Jan 2023 100 yards away

  Single storey front /side extension, part single part two storey rear extension, 1no. rear dormer to create accommodation within the roof space and alterations to fenestration.

  Granted Full applications Extension Loft or dormer +1 18 docs
  Small domestic

• 26/00814/VAR Granted

  Land West of Switchback Road North And North of Nightingale Lane Maidenhead

  Variation (under Section 73a) of planning permission 21/02963/FULL to vary the wording of Condition 8 (Drainage), 9 (Vehicles), 10 (Landscaping) and 11 (Painting) without complying with one month time limit.

  Received 27 Mar, published by the council 25 Jul 2026 Amendments
• 26/01411/VAR Granted

  Whiteladies Park Prince Albert Drive Ascot SL5 8AQ

  Variation (under Section 73) of Condition 11 to substitute those plans approved under 25/03016/FULL for the Redevelopment of existing dwelling, including demolition and reconstruction of western extension, the construction of an eastern extension including an indoor swimming pool, and creation of a basement area with amended plans.

  Received 8 Jun, published by the council 25 Jul 2026 Amendments
• 26/01792/VAR Granted

  Silver Birches St Marys Road Ascot SL5 9JE

  Variation (under Section 73) of Condition 9 (Approved Plans) to substitute those plans approved under 26/00205/FULL for a raised ridge, 2 no. front dormers and 1 no. rear dormer, 1no. side bay window, new chimney, single storey side/rear extension, alterations to fenestration and hardstanding, following demolition of existing elements with amended plans.

  Received 22 Jul, published by the council 31 Jul 2026 Amendments
• 26/02420/NMA Awaiting decision

  Development At King Street And Queen Street And Broadway Maidenhead

  Non material amendments to planning permission 25/00066/VAR as per covering letter.

  Received 2 Oct, published by the council 9 Oct 2026 Amendments
• 26/02152/NMA Granted

  Land Bounded By Ascot Fire Station Station Hill And West of Hermitage Parade And South of High Street Ascot SL5 7HF

  Non material amendments to planning permission 25/01050/FULL to amend the wording of Condition 8 (Bat Mitigation Scheme).

  Received 1 Sep, published by the council 8 Sep 2026 Amendments