Castle Hotel Windsor 18 High Street Windsor SL4 1LJ

1. 4 Aug 2026

   Received by Windsor and Maidenhead

2. 27 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 2 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 22 October 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. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• Castle Hotel Windsor 18 High Street Windsor SL4 1LJ

  26/01914/LBC Submitted 4 Aug 2026 0m away

  82% historically approved · decision due ~22 Oct

  Consent for replacement seating, entrance gate and front screening, planters. New ground surface with resin-bound gravel, decorative ceiling awning, new garden umbrellas and new escape stair screening fence.

  Awaiting decision Heritage and listed buildings 20 docs
  Small domestic

• Mercure Castle Hotel 18 High Street Windsor SL4 1LJ

  22/00997/FULL Submitted 11 Apr 2022 8m away

  Removal of the existing render at roof level and to the front elevation and undercroft where perished and renew with new breathable render using like for like materials/methods and decorated to match existing. Other works include the cleaning of elevations, formation of a new drip detail to both the parapet and cornice to prevent water ingress, ad-hoc repairs/replacement of roof slate, rainwater goods and leadwork, repairs to the chimney stacks, overhauling and subsequent repairs of the windows, French doors, and sills, and repairs to the balcony and balustrades as required including redecoration.

  Granted Full applications Windows or glazing 25 docs

• Mercure Castle Hotel 18 High Street Windsor SL4 1LJ

  21/03687/CONDIT Submitted 16 Dec 2021 11m away

  Details required by condition 3 (scaffolding) of listed building consent 19/00184/LBC for consent to facade work consisting of works to the parapet, cornice, windows, doors, balustrade and render.

  Granted Conditions Windows or glazing 6 docs

• Mercure Castle Hotel 18 High Street Windsor SL4 1LJ

  22/03266/CONDIT Submitted 6 Dec 2022 11m away

  Details required by Condition 11 (Asbestos Report) of Listed Building Consent (22/00998/LBC) for consent for the removal of the existing render at roof level and to the front elevation and undercroft where perished and renew with new breathable render using like for like materials/methods and decorated to match existing. Other works include the cleaning of elevations, formation of a new drip detail to both the parapet and cornice to prevent water ingress, ad-hoc repairs/replacement of roof slate, rainwater goods and leadwork, repairs to the chimney stacks, overhauling and subsequent repairs of the windows, French doors, and sills, and repairs to the balcony and balustrades as required including redecoration.

  Granted Conditions Windows or glazing 4 docs

• Mercure Castle Hotel 18 High Street Windsor SL4 1LJ

  22/03065/CONDIT Submitted 15 Nov 2022 11m away

  Details required by Condition 7 (sample panel) of Listed Building Consent 22/00998 for Consent for the removal of the existing render at roof level and to the front elevation and undercroft where perished and renew with new breathable render using like for like materials/methods and decorated to match existing. Other works include the cleaning of elevations, formation of a new drip detail to both the parapet and cornice to prevent water ingress, ad-hoc repairs/replacement of roof slate, rainwater goods and leadwork, repairs to the chimney stacks, overhauling and subsequent repairs of the windows, French doors, and sills, and repairs to the balcony and balustrades as required including redecoration.

  Granted Conditions Windows or glazing 7 docs

• Mercure Castle Hotel 18 High Street Windsor SL4 1LJ

  22/02882/CONDIT Submitted 27 Oct 2022 11m away

  Details required by Condition 10 (lead detailing) for Listed Building Consent (22/00998/LBC) for consent for the removal of the existing render at roof level and to the front elevation and undercroft where perished and renew with new breathable render using like for like materials/methods and decorated to match existing. Other works include the cleaning of elevations, formation of a new drip detail to both the parapet and cornice to prevent water ingress, ad-hoc repairs/replacement of roof slate, rainwater goods and leadwork, repairs to the chimney stacks, overhauling and subsequent repairs of the windows, French doors, and sills, and repairs to the balcony and balustrades as required including redecoration.

  Granted Conditions Windows or glazing 7 docs

• 26/01628/FULL Granted

  25 Bannard Road Maidenhead SL6 4NP

  Single storey rear extension following the demolition of the existing conservatory.

  3 Jul 2026 Full applications
• 26/01384/FULL Granted

  Stoney Vere Farm House Butchers Lane White Waltham Maidenhead SL6 3SD

  Single storey side extension

  4 Jun 2026 Full applications
• 26/01674/FULL Granted

  50 Welley Road Wraysbury Staines TW19 5DJ

  Detached annexe to be used ancillary to the main dwelling.

  9 Jul 2026 Full applications
• 26/01312/FULL Refused

  16 Whyteladyes Lane Cookham Maidenhead SL6 9NA

  Hip to gable, 1no. front dormer, 1no. rear dormer and alterations to fenestration and relocation of PV panels.

  27 May 2026 Full applications
• 26/01379/FULL Granted

  Lotus Cottage Holyport Street Holyport Maidenhead SL6 2JR

  Part single part two storey part first floor rear/side extension and alterations to fenestration.

  4 Jun 2026 Full applications