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Planning application

Cancer Research UK 101 High Street Maidenhead SL6 1JX

Refused Windsor and Maidenhead 25/02136/CLAMA Prior Approval Class MA

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Prior approval for the change of use of part of the ground floor and the first floor from Commercial, Business and Service (Use Class E) to create 2no. dwellings (Use Class C3).

As published by the council, reference 25/02136/CLAMA

Application record

Reference
25/02136/CLAMA
Type
Prior Approval Class MA
Status
Decided
Decision
Refused As published: Prior Approval Required and Refused
Received
19 Aug 2025
Validated
20 Aug 2025
Decided
13 Oct 2025
Ward
St Marys
Parish
Maidenhead Unparished
Decision by
Delegated
Postcode
SL6 1JX

Site history

Applications at this address on the Windsor and Maidenhead register

This site has had 2 applications since 2025: 0 approved, 1 refused.

  • 26/00693/FULL Withdrawn

    Cancer Research UK 101 High Street Maidenhead SL6 1JX

    1 no. additional front entrance, first floor rear extension, new flat roof to existing rear single storey element with 1 no. rear rooflight, raised roof of building to form 2nd floor level, new PV panels and alterations to the external finish

    Decided 19 May 2026 Full applications

Timeline

Dates from the published record

  1. 19 Aug 2025

    Received by Windsor and Maidenhead

  2. 20 Aug 2025

    Validated

    Checked as complete and ready for consideration.

  3. 13 Oct 2025

    Decision issued: Prior Approval Required and Refused

  4. 11 Aug 2026

    Added to PlanIndex

Documents

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

21 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 refusal means

Windsor and Maidenhead refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

About prior approval applications

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • Cancer Research UK 101 High Street Maidenhead SL6 1JX

    26/00693/FULL Submitted 16 Mar 2026 50 yards away

    1 no. additional front entrance, first floor rear extension, new flat roof to existing rear single storey element with 1 no. rear rooflight, raised roof of building to form 2nd floor level, new PV panels and alterations to the external finish

    Withdrawn Full applications Extension Loft or dormer 34 docs
    Small domestic
  • Ground And First And Second Floors 103 High Street Maidenhead

    22/03202/FULL Submitted 28 Nov 2022 50 yards away

    Conversion of the first and second floors to provide 4no. residential unit with refuse and cycle storage at ground floor and alterations to fenestration.

    Granted Full applications Windows or glazing 16 docs
  • Thai Warung 3 Nicholsons Lane Maidenhead SL6 1HR

    23/00903/FULL Submitted 13 Apr 2023 50 yards away

    Replacement and relocation of existing front entrance, new cycle and bin stores, part change of use of existing first floor from A3 (restaurant) to C3 (residential), 1no. front Juliet balcony, second floor side dormer and 1no. rear dormer, raising of the eaves and ridge and alterations to fenestration and external finishes to provide 2no. new additional flats.

    Withdrawn Full applications New dwelling Loft or dormer +1 30 docs
  • Thai Warung 3 Nicholsons Lane Maidenhead SL6 1HR

    23/00905/LBC Submitted 13 Apr 2023 50 yards away

    Consent for internal alterations, replacement and relocation of existing front entrance, new cycle and bin stores, part change of use of existing first floor from A3 (restaurant) to C3 (residential), 1no. front Juliet balcony, second floor side dormer and 1no. rear dormer, raising of the eaves and ridge and alterations to fenestration and external finishes to provide 2no. new additional flats.

    Withdrawn Heritage and listed buildings New dwelling Loft or dormer +1 20 docs
  • Hedron Construction 8A Nicholsons Lane Maidenhead SL6 1HR

    20/00087/FULL Submitted 15 Jan 2020 50 yards away

    Change of use of Class B1 (Office) to Class C3 (Dwelling)

    Granted Full applications 13 docs
    Domestic
  • K And B Convenience Store 2 Blandy House 3 - 5 King Street Maidenhead SL6 1DZ

    22/02934/FULL Submitted 3 Nov 2022 50 yards away

    Change of use of Beauty Parlour (Sui Generis) to Off Licence and Convenient Store with signage (part retrospective).

    Withdrawn Full applications 9 docs

In Windsor and Maidenhead

  • 26/02170/PDXL Granted

    15 Cell Farm Avenue Old Windsor Windsor SL4 2PD

    Single storey rear extension no greater than 5.00m in depth, 2.85m high with an eaves height of 2.85m following demolition of the existing elements.

    Received 3 Sep, published by the council 12 Sep 2026 Prior approval
  • 26/02445/PDXL Awaiting decision

    Mulberry House Waltham Road Maidenhead SL6 3NH

    Single storey rear extension no greater than 7.88m in depth, 3.50m high with an eaves height of 3.00m.

    Received 7 Oct, published by the council 9 Oct 2026 Prior approval
  • 26/02001/CLAMA Granted

    158 Blackamoor Lane Maidenhead SL6 8RN

    Prior approval for the change of use of the ground floor from Use Class Eg(iii) to form 8 no. x 1 bedroom flats.

    Received 13 Aug, published by the council 24 Aug 2026 Prior approval
  • 26/02425/PDXL Awaiting decision

    Eton Manor 60 Eton Road Datchet Slough SL3 9AY

    Single storey rear extension no greater than 6.00m in depth, 3.00m high with an eaves height of 2.75m.

    Received 5 Oct, published by the council 9 Oct 2026 Prior approval
  • 26/02007/PDXL Refused

    18 Bradshaw Close Windsor SL4 5PS

    Single storey rear extension no greater than 3.60m in depth, 3.77m high with an eaves height of 2.43m.

    Received 13 Aug, published by the council 24 Aug 2026 Prior approval