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Planning application

21/01079/FULL

21 Lassell Gardens Maidenhead SL6 8ND

Granted Windsor and Maidenhead Full

Proposal

Part single, part two storey extension, alterations to fenestration, and rear decking, following the demolition of the existing detached garage.

As published by the council, reference 21/01079/FULL

Timeline

Dates from the published record

  1. 8 Apr 2021

    Received by Windsor and Maidenhead

  2. 26 Jul 2021

    Decision issued: Application Permitted

  3. 27 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

  • 26/00378/FULL Awaiting decision

    The Ark 20 And Land To The Rear of 20 Ray Street Maidenhead

    Enlargement of the existing basement, part single part two storey part first floor side/rear extension, 2no. side dormers, 2no. balconies, steps, new external staircase and alterations to fenestration to enlarge the existing Public House and provide 1no. flat ancillary to the Public House, 2no. first floor flats and 1no. second floor flat. Detached cycle/refuse store, new boundary treatments, new hardstanding and access and alterations to the existing parking area to provide 8 parking spaces, and associated landscaping following the demolition of the existing elements and outbuildings.

    12 Feb 2026 85m away Full applications
  • 23/00191/FULL Refused

    1 The Drive Ray Street Maidenhead SL6 8PN

    Single storey side extension, 1no. rear dormer and alterations to fenestration

    20 Jan 2023 94m away Full applications
  • 22/02558/FULL Granted

    17 Juniper Drive Maidenhead SL6 8RE

    Change the existing fully glazed conservatory roof to a part tiled/part glazed roof.

    20 Sep 2022 100m away Full applications
  • 21/01533/TPO Granted

    15 Juniper Drive Maidenhead SL6 8RE

    (T1) - Lime - Crown thin by 33% and crown lift by 2m. Remove epicormic shoots on stem up to first major branch. Reduce branches overhanging road by 1.5m and reduce overall by 1.5m leaving a final height of 18.3m and width of 6m. (TPO 9 of 1978)

    17 May 2021 101m away Trees
  • 23/00255/TPO Granted

    4 Juniper Drive Maidenhead SL6 8RE

    (T1) Cedar: reduce lower lateral crown spread by 1.5m to 2m up to a height of 10m from ground level, providing a lower crown clearance of up to 5m from ground level. (009/1978/TPO).

    30 Jan 2023 109m away Trees
  • 26/00502/FULL Awaiting decision

    Cowley House And Cowley Cottage And Cowley Lodge Ray Park Road Maidenhead

    Demolition of existing buildings (Cowley House, Cowley Lodge and Cowley Cottage) and the construction of a new block of 13 no. flats with parking, cycle and bin stores.

    25 Feb 2026 159m away Full applications

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