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Planning application

25/01425/FULL

12 Park Street Windsor SL4 1LU

Awaiting decision Windsor and Maidenhead Full

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

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

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

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.

About full applications applications

How this application type works

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

Nearby applications

Within 500 metres

  • 24/02014/FULL Withdrawn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.

    20 Aug 2024 0m away 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  • 24/02015/LBC Withdrawn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.

    19 Aug 2024 1m away 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.

    12 Oct 2022 1m away 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.

    11 Oct 2022 1m away Heritage and listed buildings
  • 22/03314/FULL Granted

    10 Park Street Windsor SL4 1LU

    Enlargement of the existing outbuilding.

    13 Dec 2022 16m away Full applications
  • 22/03068/LBC Granted

    10 Park Street Windsor SL4 1LU

    Consent for a lift across all floors following the reconfigation of the existing staircase, internal alterations and alterations to fenestration.

    15 Nov 2022 17m away Heritage and listed buildings

In Windsor and Maidenhead

  • 26/00962/FULL Granted

    Bonnicut Barn Bonnicut Court 14 High Street Sunningdale Ascot SL5 0NB

    2no. front dormers, part raising of the front elevation to form a parapet wall and terrace, 3no. front rooflights, 3no. rear dormers and alterations to fenestration. (Part Retrospective).

    20 Apr 2026 Full applications
  • 26/01310/FULL Granted

    6 Gilman Crescent Windsor SL4 4YN

    Single storey front/side extension, relocated front door, two storey rear extension, alterations to fenestration and hardstanding, new steps, 1 no. dropped kerb, following demolition of existing elements

    22 May 2026 Full applications
  • 25/03313/FULL Refused

    Land To The South of Lower Mount Farm Long Lane Cookham Maidenhead

    Erection of a crematorium with ceremony hall and memorial arboretum, associated use of land, PV array, vehicular access, parking, landscaping, pavement and road widening along Long Lane.

    15 Dec 2025 Full applications
  • 26/01387/FULL Granted

    7 Elm Road Windsor SL4 3NB

    Single storey rear/side extension

    5 Jun 2026 Full applications
  • 26/00877/FULL Granted

    45 Queens Close Old Windsor Windsor SL4 2PR

    Two storey front/side extension.

    7 Apr 2026 Full applications