17 Upcroft Windsor SL4 3NH

1. 16 Feb 2026

   Received by Windsor and Maidenhead

2. 30 Mar 2026

   Decision issued: Prior Approval Not Required

3. 25 Jul 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 30 March 2026, 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.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 23 Upcroft Windsor SL4 3NH

  25/02842/NMA Submitted 28 Oct 2025 28m away

  Non material amendments to planning permission 25/01252/FULL for a change to part of the rear roof from pitched to flat.

  Granted Amendments 8 docs

• 33 Upcroft Windsor SL4 3NH

  21/00716/FULL Submitted 9 Mar 2021 79m 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  Withdrawn Full applications Extension Loft or dormer +1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 81m 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 81m 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

• 41 Westmead Windsor SL4 3NN

  23/01840/FULL Submitted 27 Jul 2023 97m away

  First floor side extension and hip to gable roof alteration

  Granted Full applications Extension Loft or dormer 12 docs

• 37 Princess Avenue Windsor SL4 3LU

  20/03491/FULL Submitted 23 Dec 2020 97m away

  Single storey side extension and alterations to first floor side fenestration.

  Refused Full applications Extension Windows or glazing 17 docs
  Small domestic

• 26/01684/PDXL Refused

  9 Duncroft Windsor SL4 4HH

  Single storey rear extension no greater than 6.00m in depth, 3.20m high with an eaves height of 2.90m.

  Received 10 Jul, published by the council 11 Aug 2026 Prior approval
• 26/01861/PDXL Granted

  6 Hendons Way Holyport Maidenhead SL6 2LF

  Single storey rear extension no greater than 6.00m in depth, 2.78m high with an eaves height of 2,70m.

  Received 29 Jul, published by the council 4 Aug 2026 Prior approval
• 26/01912/PDXL Granted

  Fourwinds 2 Green Lane Ascot SL5 7QJ

  Single storey rear extension no greater than 7.46m in depth, 3.20m high with an eaves height of 2.45m.

  Received 3 Aug, published by the council 11 Aug 2026 Prior approval
• 26/01789/PDXL Granted

  6 The Dell Maidenhead SL6 3NS

  Single storey rear extension no greater than 3.76m in depth, 2.90m high with an eaves height of 2.90m.

  Received 22 Jul, published by the council 31 Jul 2026 Prior approval
• 26/01831/PDXL Granted

  1 Bell View Windsor SL4 4ET

  Single storey rear extension no greater than 4.30m in depth, 2.80m high with an eaves height of 2.50m.

  Received 27 Jul, published by the council 31 Jul 2026 Prior approval