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Planning application

336 St Leonards Road Windsor SL4 3DX

Granted Windsor and Maidenhead 21/01083/FULL Full

Works: Extension

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

Proposal

Two storey side extension.

As published by the council, reference 21/01083/FULL

Application record

Reference
21/01083/FULL
Type
Full
Status
Decided
Decision
Granted As published: Application Permitted
Received
7 Apr 2021
Validated
2 Jun 2021
Decided
1 Dec 2022
Ward
Clewer East
Parish
Windsor Unparished
Decision by
Delegated
Postcode
SL4 3DX

Site history

Applications at this address on the Windsor and Maidenhead register

This site has had 2 applications since 2020: 1 approved, 1 refused.

  • 20/01540/FULL Refused

    336 St Leonards Road Windsor SL4 3DX

    Two storey side extension with habitable accommodation in roof space, 1 No. first floor rear window and 2 No. rear rooflights.

    Decided 26 Oct 2020 Full applications

Timeline

Dates from the published record

  1. 7 Apr 2021

    Received by Windsor and Maidenhead

  2. 2 Jun 2021

    Validated

    Checked as complete and ready for consideration.

  3. 1 Dec 2022

    Decision issued: Application Permitted

  4. 3 Sep 2026

    Added to PlanIndex

Documents

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

22 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.

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Open the documents

What this grant of permission means

Windsor and Maidenhead granted permission on 1 December 2022, 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

  • 336 St Leonards Road Windsor SL4 3DX

    20/01540/FULL Submitted 29 Jun 2020 50 yards away

    Two storey side extension with habitable accommodation in roof space, 1 No. first floor rear window and 2 No. rear rooflights.

    Refused Full applications Extension Loft or dormer +1 20 docs

  • 346 St Leonards Road Windsor SL4 3DX

    25/02083/CPD Submitted 15 Aug 2025 50 yards away

    Certificate of lawfulness to determine whether the proposed single storey outbuildings incidental to the main dwelling are lawful.

    Granted Lawful development 8 docs
    Small domestic

  • 363 St Leonards Road Windsor SL4 3DS

    26/01431/CPD Submitted 10 Jun 2026 50 yards away

    Certificate of lawfulness to determine whether the proposed 1no. front rooflight, 1no. L-shaped rear dormer with 1no. Juliet balcony and alterations to fenestration are lawful.

    Granted Lawful development Loft or dormer Windows or glazing 10 docs

  • 352 St Leonards Road Windsor SL4 3DX

    24/02818/PDXL Submitted 18 Nov 2024 50 yards away

    Single storey rear extension no greater than 4.00m in depth, 3.75m high with an eaves height of 3.00m.

    Granted Prior approval Extension 16 docs
    Small domestic

  • 37 Princess Avenue Windsor SL4 3LU

    20/03491/FULL Submitted 23 Dec 2020 100 yards away

    Single storey side extension and alterations to first floor side fenestration.

    Refused Full applications Extension Windows or glazing 17 docs
    Small domestic

  • 21 Princess Avenue Windsor SL4 3LU

    21/02370/FULL Submitted 2 Aug 2021 100 yards away

    Single storey side/rear extension.

    Granted Full applications Extension 8 docs
    Small domestic

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