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Planning application

12 Park Street Windsor SL4 1LU

Awaiting decision Windsor and Maidenhead 25/01425/FULL Full

Works: New dwelling Extension Roofing Windows or glazing Domestic

Read from the description, not a valuation. How we read the register

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Change of use of property from offices (Use Class E) and two self-contained residential apartments, to single family dwelling (Use Class C3), to include a rear extension at basement, ground and first floor with solar panels to rear first floor element, new roof vents and alterations to the external finish and fenestration.

As published by the council, reference 25/01425/FULL

Application record

Reference
25/01425/FULL
Type
Full
Status
Awaiting decision
Received
4 Jun 2025
Validated
6 Jun 2025
Ward
Eton And Castle
Parish
Windsor Unparished
Postcode
SL4 1LU

Site history

Applications at this address on the Windsor and Maidenhead register

This site has had 5 applications since 2022.

  • 24/02014/FULL Withdrawn

    12 Park Street Windsor SL4 1LU

    Change of use of the property from offices (use Class E) and two self-contained residential apartments to a single dwelling house (use Class C3), including a rear extension at basement, ground floor and first floor, and various internal and external alterations.

    Decided 30 Oct 2024 Full applications
  • 24/02015/LBC Withdrawn

    12 Park Street Windsor SL4 1LU

    Consent for alterations to change the use of the property from offices (use Class E) and two self-contained residential apartments to a single dwelling house (use Class C3), including a rear extension at basement, ground floor and first floor, and various internal and external alterations.

    Decided 30 Oct 2024 Heritage and listed buildings
  • 22/02751/FULL Withdrawn

    12 Park Street Windsor SL4 1LU

    Change of use of the existing 2no. self contained flats and ground and first floor offices to 1no. dwelling.

    Decided 9 Dec 2022 Full applications
  • 22/02752/LBC Withdrawn

    12 Park Street Windsor SL4 1LU

    Consent for the change of use of the existing 2no. self contained flats and ground and first floor offices to 1no. dwelling and internal alterations.

    Decided 25 Oct 2022 Heritage and listed buildings

Timeline

Dates from the published record

  1. 4 Jun 2025

    Received by Windsor and Maidenhead

  2. 6 Jun 2025

    Validated

    Checked as complete and ready for consideration.

  3. 27 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 1 August 2025, 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.

Documents

Plans, drawings, consultee responses and the officer's report

37 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What happens while it is decided

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.

About full applications

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.

Nearby applications

Within 0.3 miles

  • 12 Park Street Windsor SL4 1LU

    24/02014/FULL Submitted 20 Aug 2024 50 yards away

    Change of use of the property from offices (use Class E) and two self-contained residential apartments to a single dwelling house (use Class C3), including a rear extension at basement, ground floor and first floor, and various internal and external alterations.

    Withdrawn Full applications New dwelling Extension 28 docs
    Domestic

  • 12 Park Street Windsor SL4 1LU

    24/02015/LBC Submitted 19 Aug 2024 50 yards away

    Consent for alterations to change the use of the property from offices (use Class E) and two self-contained residential apartments to a single dwelling house (use Class C3), including a rear extension at basement, ground floor and first floor, and various internal and external alterations.

    Withdrawn Heritage and listed buildings New dwelling Extension 22 docs
    Domestic

  • 12 Park Street Windsor SL4 1LU

    22/02751/FULL Submitted 12 Oct 2022 50 yards away

    Change of use of the existing 2no. self contained flats and ground and first floor offices to 1no. dwelling.

    Withdrawn Full applications New dwelling 10 docs
    Domestic

  • 12 Park Street Windsor SL4 1LU

    22/02752/LBC Submitted 11 Oct 2022 50 yards away

    Consent for the change of use of the existing 2no. self contained flats and ground and first floor offices to 1no. dwelling and internal alterations.

    Withdrawn Heritage and listed buildings New dwelling 9 docs
    Domestic

  • 11 Park Street Windsor SL4 1LU

    26/02027/LBC Submitted 17 Aug 2026 50 yards away

    83% historically approved · decision due ~19 Oct

    Consent for the partial demolition and rebuilding of the existing boundary wall.

    Awaiting decision Heritage and listed buildings Demolition 12 docs
    Small domestic

  • 10 Park Street Windsor SL4 1LU

    22/03314/FULL Submitted 13 Dec 2022 50 yards away

    Enlargement of the existing outbuilding.

    Granted Full applications 18 docs

In Windsor and Maidenhead

  • 26/00980/FULL Granted

    19 Linchfield Road Datchet Slough SL3 9NA

    Single storey rear extension

    Received 21 Apr, published by the council 25 Jul 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

    Received 13 Jul, published by the council 31 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.

    Received 9 Jul, published by the council 25 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.

    Received 20 May, published by the council 25 Jul 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.

    Received 13 Jul, published by the council 27 Jul 2026 Full applications