Willow House Onslow Road Sunningdale Ascot SL5 0HW

1. 22 Sep 2021

   Received by Windsor and Maidenhead

2. 2 Dec 2021

   Decision issued: Application Permitted

3. 16 Aug 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 2 December 2021, 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 full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Sharnbrook Onslow Road Sunningdale Ascot SL5 0HW

  21/01521/FULL Submitted 17 May 2021 50 yards away

  New front canopy, garage conversion, new roof to single storey front element, 2no. front dormers, part single, part first floor, part three storey rear extensions, 2 x rear gables, garage including first floor accommodation with side dormer and single storey side link to main dwelling and alterations to fenestration, new front boundary wall and gate.

  Withdrawn Full applications Extension Loft or dormer +2 15 docs
  Small domestic

• Sharnbrook Onslow Road Sunningdale Ascot SL5 0HW

  21/02680/FULL Submitted 2 Sep 2021 50 yards away

  Relocation of existing front entrance door to include x1 new canopy, two storey rear extension, single storey link extension to side elevation, two storey side extension, alteration to roof of and of front dormers, garage conversion into habitable accommodation, removal of chimney, entrance gate and alterations to fenestration on ground and first floor following demolition of existing elements (part retrospective).

  Granted Full applications Extension Loft or dormer +2 11 docs
  Small domestic

• Cornerstone Onslow Road Sunningdale Ascot SL5 0HW

  22/00489/VAR Submitted 24 Feb 2022 50 yards away

  Variation (under Section 73) of Condition 5 (Approved Plans) to substitute those plans approved under 21/02680/FULL for the relocation of existing front entrance door to include x1 new canopy, two storey rear extension, single storey link extension to side elevation, two storey side extension, alteration to roof of and of front dormers, garage conversion into habitable accommodation, removal of chimney, entrance gate and alterations to fenestration on ground and first floor following demolition of existing elements (part retrospective) with amended plans.

  Withdrawn Amendments Extension Loft or dormer +2 11 docs
  Small domestic

• Cornerstone Onslow Road Sunningdale Ascot SL5 0HW

  22/00133/NMA Submitted 19 Jan 2022 50 yards away

  Non material amendments to planning permission 21/02680 for change to front porch, new ensuite windows to front and side elevations, change to front window to guest bedroom, new dormer to side of guest bedroom, rear utility room door changed to window, utility and gym door and windows changed on side elevation.

  Refused Amendments Extension Loft or dormer +1 5 docs
  Small domestic

• Cornerstone Onslow Road Sunningdale Ascot SL5 0HW

  22/00913/VAR Submitted 1 Apr 2022 50 yards away

  Variation (under Section 73a) of Condition 5 substitute those plans approved under 21/02680 for the Relocation of existing front entrance door to include x1 new canopy, two storey rear extension, single storey link extension to side elevation, two storey side extension, alteration to roof of and of front dormers, garage conversion into habitable accommodation, removal of chimney, entrance gate and alterations to fenestration on ground and first floor following demolition of existing elements (part retrospective). amended plans.

  Granted Amendments Extension Loft or dormer +2 13 docs
  Small domestic

• Shadow Lawn Onslow Road Sunningdale Ascot SL5 0HW

  22/01866/NMA Submitted 11 Jul 2022 50 yards away

  Non-material amendment to planning permission 22/00385/FULL for fenestration changes.

  Granted Amendments Windows or glazing 5 docs

• 26/02029/FULL Granted

  5 Kimber Close Windsor SL4 4BJ

  Single storey rear extension.

  Received 17 Aug, published by the council 27 Aug 2026 Full applications
• 26/01955/FULL Granted

  2 Holmlea Road Datchet Slough SL3 9HQ

  Change of use from a dwellinghouse (Use Class C3) to a children's home (Use Class C2) for up to three children, together with conversion of the garage to an office with an en-suite facilities and alterations to fenestration.

  Received 7 Aug, published by the council 27 Aug 2026 Full applications
• 26/01121/FULL Granted

  Zain House 15 Wilton Crescent Windsor SL4 4YJ

  Single storey side/front extension, first floor extension over existing side element with 1no. Juliet balcony and 1no. Juliet balcony to existing rear elevation.

  Received 6 May, published by the council 11 Aug 2026 Full applications
• 26/01977/FULL Granted

  9 St Marks Place Windsor SL4 3BG

  Garage conversion and alterations to fenestration.

  Received 11 Aug, published by the council 24 Aug 2026 Full applications
• 26/01804/FULL Granted

  16 Devereux Road Windsor SL4 1JJ

  Installation of air conditioning compressor unit to the first floor side elevation.

  Received 23 Jul, published by the council 24 Aug 2026 Full applications