Skip to content
PlanIndex Get alerts
Menu

Planning application

21 Mills Spur Old Windsor Windsor SL4 2ND

Granted Windsor and Maidenhead 21/00348/FULL Full

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Construction of a detached outbuilding forming a granny annexe ancillary to main dwelling.

As published by the council, reference 21/00348/FULL

Application record

Reference
21/00348/FULL
Type
Full
Status
Decided
Decision
Granted As published: Application Permitted
Received
8 Feb 2021
Validated
8 Feb 2021
Decided
19 Mar 2021
Ward
Old Windsor
Parish
Old Windsor Parish
Decision by
Delegated
Postcode
SL4 2ND

Site history

Applications at this address on the Windsor and Maidenhead register

This site has had 3 applications since 2020: 2 approved, 0 refused.

  • 20/02269/CPD Granted

    21 Mills Spur Old Windsor Windsor SL4 2ND

    Certificate of lawfulness to determine whether the proposed x3 front rooflights and x1 rear dormer to facilitate a loft conversion is lawful.

    Decided 26 Oct 2020 Lawful development
  • 20/02005/CPU Withdrawn

    21 Mills Spur Old Windsor Windsor SL4 2ND

    Certificate of lawfulness to determine whether the proposed use of the land to station a mobile home granny annexe for use incidental to the main dwelling is lawful.

    Decided 24 Mar 2021 Lawful development

Timeline

Dates from the published record

  1. 8 Feb 2021

    Received by Windsor and Maidenhead

  2. 19 Mar 2021

    Decision issued: Application Permitted

  3. 12 Sep 2026

    Added to PlanIndex

Documents

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

25 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 this grant of permission means

Windsor and Maidenhead granted permission on 19 March 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.

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

  • 21 Mills Spur Old Windsor Windsor SL4 2ND

    20/02005/CPU Submitted 10 Aug 2020 50 yards away

    Certificate of lawfulness to determine whether the proposed use of the land to station a mobile home granny annexe for use incidental to the main dwelling is lawful.

    Withdrawn Lawful development 28 docs
    Domestic

  • 21 Mills Spur Old Windsor Windsor SL4 2ND

    20/02269/CPD Submitted 3 Sep 2020 50 yards away

    Certificate of lawfulness to determine whether the proposed x3 front rooflights and x1 rear dormer to facilitate a loft conversion is lawful.

    Granted Lawful development Loft or dormer 8 docs

  • 13 Mills Spur Old Windsor Windsor SL4 2ND

    20/01486/FULL Submitted 24 Jun 2020 50 yards away

    Single storey front extension, infill extension and garage conversion into habitable accommodation with alteration to fenestration.

    Granted Full applications Extension Windows or glazing 15 docs
    Small domestic

  • 33 Mills Spur Old Windsor Windsor SL4 2ND

    21/01214/FULL Submitted 20 Apr 2021 50 yards away

    Single storey rear extension with new roof to garage following demolition of conservatory extension and part removal of garage.

    Granted Full applications Extension Roofing +1 9 docs
    Small domestic

  • 15 Warrington Spur Old Windsor Windsor SL4 2NF

    26/02290/CPD Submitted 17 Sep 2026 100 yards away

    69% historically approved · decision due ~30 Nov

    Certificate of lawfulness to determine whether the proposed installation of external wall insulation is lawful.

    Awaiting decision Lawful development 4 docs

  • 15 Warrington Spur Old Windsor Windsor SL4 2NF

    26/02205/CPD Submitted 7 Sep 2026 100 yards away

    69% historically approved · decision due ~2 Nov

    Certificate of lawfulness to determine whether the proposed new driveway is lawful.

    Awaiting decision Lawful development 5 docs

In Windsor and Maidenhead

  • 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