21 Ashbrook Road Old Windsor Windsor SL4 2LT

1. 23 Sep 2025

   Received by Windsor and Maidenhead

2. 30 Oct 2025

   Decision issued: Prior Approval Not Required

3. 11 Aug 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 30 October 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.

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.

• 17 Ashbrook Road Old Windsor Windsor SL4 2LT

  20/01645/FULL Submitted 8 Jul 2020 50 yards away

  Single storey front extension.

  Granted Full applications Extension 8 docs
  Small domestic

• 15 Ashbrook Road Old Windsor Windsor SL4 2LT

  20/01647/FULL Submitted 8 Jul 2020 50 yards away

  Single storey front extension.

  Granted Full applications Extension 8 docs
  Small domestic

• 20 Harwood Gardens Old Windsor Windsor SL4 2LJ

  22/00176/FULL Submitted 24 Jan 2022 50 yards away

  Single storey rear extension and two storey rear extension (part retrospective).

  Granted Full applications Extension 16 docs
  Small domestic

• 20 Harwood Gardens Old Windsor Windsor SL4 2LJ

  21/00975/FULL Submitted 30 Mar 2021 50 yards away

  Single storey side extension, two storey rear extension and alterations to fenestration, following demolition of the existing single storey rear element and covered areas.

  Refused Full applications Extension Demolition +1 25 docs
  Small domestic

• 26 Ashbrook Road Old Windsor Windsor SL4 2LS

  22/01990/FULL Submitted 21 Jul 2022 50 yards away

  Part single/part two storey side/rear extension with covered area to front elevation and new mono pitched roof to existing single story front element following demolition of existing garage.

  Granted Full applications Extension Demolition 14 docs

• 37 Ashbrook Road Old Windsor Windsor SL4 2LT

  23/00312/FULL Submitted 6 Feb 2023 50 yards away

  Single storey front extension, single storey rear extension, enlargement of existing dropped kerb and demolition of existing elements.

  Granted Full applications Extension Demolition 15 docs
  Small domestic

• 26/02170/PDXL Granted

  15 Cell Farm Avenue Old Windsor Windsor SL4 2PD

  Single storey rear extension no greater than 5.00m in depth, 2.85m high with an eaves height of 2.85m following demolition of the existing elements.

  Received 3 Sep, published by the council 12 Sep 2026 Prior approval
• 26/02445/PDXL Awaiting decision

  Mulberry House Waltham Road Maidenhead SL6 3NH

  Single storey rear extension no greater than 7.88m in depth, 3.50m high with an eaves height of 3.00m.

  Received 7 Oct, published by the council 9 Oct 2026 Prior approval
• 26/02001/CLAMA Granted

  158 Blackamoor Lane Maidenhead SL6 8RN

  Prior approval for the change of use of the ground floor from Use Class Eg(iii) to form 8 no. x 1 bedroom flats.

  Received 13 Aug, published by the council 24 Aug 2026 Prior approval
• 26/02425/PDXL Awaiting decision

  Eton Manor 60 Eton Road Datchet Slough SL3 9AY

  Single storey rear extension no greater than 6.00m in depth, 3.00m high with an eaves height of 2.75m.

  Received 5 Oct, published by the council 9 Oct 2026 Prior approval
• 26/02007/PDXL Refused

  18 Bradshaw Close Windsor SL4 5PS

  Single storey rear extension no greater than 3.60m in depth, 3.77m high with an eaves height of 2.43m.

  Received 13 Aug, published by the council 24 Aug 2026 Prior approval