Land At Costain House Vanwall Road Maidenhead

1. 8 Jun 2026

   Received by Windsor and Maidenhead

2. 18 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 25 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 13 August 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Windsor and Maidenhead took a median of 55 days over the applications it decided in the last year.

This application is with Windsor and Maidenhead for determination, against a statutory target of eight weeks. Over the last year Windsor and Maidenhead decided full applications in a median of 62 days. More in our guide to how long planning decisions take.

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.

• Costain House Vanwall Business Park Vanwall Road Maidenhead SL6 4UB

  26/00639/PT20AA Submitted 10 Mar 2026 2m away

  Application for prior approval for construction of one additional storey to the building to provide 9 additional dwellings.

  Granted 23 docs

• Vanwall Residences Vanwall Road Maidenhead SL6 4GH

  26/01488/PT20AA Submitted 17 Jun 2026 2m away

  Application for prior approval for construction of one additional storey to the building to provide 16 additional dwellings.

  Granted 19 docs

• Costain House Vanwall Business Park Vanwall Road Maidenhead SL6 4UB

  25/02983/CONDIT Submitted 11 Nov 2025 9m away

  Details required by Condition 4 (Acoustic insulation) of planning permission 24/01824/CLAMA for Prior approval for the change of use of existing office building from commercial business and service use (Class E) to 38no. residential dwellings (Class C3).

  Granted Conditions 12 docs

• Costain House Vanwall Business Park Vanwall Road Maidenhead SL6 4UB

  25/02985/CONDIT Submitted 11 Nov 2025 9m away

  Details required by Condition 5 (Contamination) of planning permission 24/01824/CLAMA for Prior approval for the change of use of existing office building from commercial business and service use (Class E) to 38no. residential dwellings (Class C3).

  Granted Conditions 10 docs

• SAP Objects House Vanwall Business Park Vanwall Road Maidenhead SL6 4UB

  24/02274/CLAMA Submitted 18 Sep 2024 48m away

  Prior approval for the change of use from office building (Class E) to residential (Class C3) for 38no. dwellings.

  Refused Prior approval 32 docs
  Major scheme

• Vandervell House Vanwall Business Park Vanwall Road Maidenhead SL6 4UB

  24/02295/CLAMA Submitted 20 Sep 2024 84m away

  Prior approval for the change of use from office building (Class E) to residential (Class C3) for 31no. dwellings.

  Granted Prior approval 32 docs
  Major scheme

• 26/00980/FULL Granted

  19 Linchfield Road Datchet Slough SL3 9NA

  Single storey rear extension

  21 Apr 2026 Full applications
• 26/01706/FULL Granted

  Loraine 36 Forlease Road Maidenhead SL6 1RU

  Single storey rear extension to the main dwelling, partial demolition to existing garage with a relocated door, alterations to the patio and new steps

  13 Jul 2026 Full applications
• 26/01675/FULL Granted

  59 Grove Road Windsor SL4 1HT

  Increase in height of the existing side boundary brick wall following the removal of the existing timber fencing and a reduction in height and new railings to the existing front/side boundary wall.

  9 Jul 2026 Full applications
• 26/01265/FULL Granted

  107 Slough Road Datchet Slough SL3 9AQ

  Single storey rear extension and alterations to fenestration following the demolition of the existing rear element.

  20 May 2026 Full applications
• 26/01700/FULL Granted

  4 Dhoon Rise Maidenhead SL6 1BS

  Garage conversion, front bay window and a single storey front/side extension.

  13 Jul 2026 Full applications