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Planning application

Berkshire House 39 - 51 High Street Ascot SL5 7HY

Granted Windsor and Maidenhead 25/02457/CLAMA Prior Approval Class MA

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

Proposal

Prior approval for the change of use of the first and second floors from office (Class E) to residential (C3) for 32 no. units.

As published by the council, reference 25/02457/CLAMA

Application record

Reference
25/02457/CLAMA
Type
Prior Approval Class MA
Status
Decided
Decision
Granted As published: Prior Approval Required and Granted
Received
19 Sep 2025
Validated
19 Sep 2025
Decided
13 Nov 2025
Ward
Ascot & Sunninghill
Parish
Sunninghill And Ascot Parish
Decision by
Delegated
Postcode
SL5 7HY

Site history

Applications at this address on the Windsor and Maidenhead register

This site has had 3 applications since 2021: 1 approved, 2 refused.

  • 24/02294/CLAMA Refused

    Berkshire House 39 - 51 High Street Ascot SL5 7HY

    Prior approval for the change of use of the first and second floor from office building (Class E) to residential (Class C3) for 32no. dwellings.

    Decided 28 Nov 2024 Prior approval
  • 21/02260/CLASSO Refused

    Berkshire House 39 - 51 High Street Ascot SL5 7HY

    Change of use from offices (Class B1(a)) to dwellinghouses (Class C3) to create x30 flats.

    Decided 21 Sep 2021 Prior approval

Timeline

Dates from the published record

  1. 19 Sep 2025

    Received by Windsor and Maidenhead

  2. 13 Nov 2025

    Decision issued: Prior Approval Required and Granted

  3. 11 Aug 2026

    Added to PlanIndex

Documents

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

28 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 13 November 2025, 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 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

  • Berkshire House 39 - 51 High Street Ascot SL5 7HY

    24/02294/CLAMA Submitted 20 Sep 2024 50 yards away

    Prior approval for the change of use of the first and second floor from office building (Class E) to residential (Class C3) for 32no. dwellings.

    Refused Prior approval 28 docs
    Major scheme

  • Berkshire House 39 - 51 High Street Ascot SL5 7HY

    21/02260/CLASSO Submitted 20 Jul 2021 50 yards away

    Change of use from offices (Class B1(a)) to dwellinghouses (Class C3) to create x30 flats.

    Refused Prior approval New dwelling 47 docs

  • Second Floor Berkshire House 39 - 51 High Street Ascot SL5 7HY

    23/01715/CLAMA Submitted 12 Jul 2023 50 yards away

    Prior approval to change the use of the second floor from Class E offices to Class C3 dwellinghouses (14 units).

    Granted Prior approval 27 docs
    Major scheme

  • Surrey House Course Road Ascot SL5 7HQ

    20/02309/FULL Submitted 4 Sep 2020 50 yards away

    Change of use from storage (Class B8) to a flexible use including: storage (Class B8) and/or light industrial (Class E).

    Granted Full applications 32 docs

  • Surrey House Course Road Ascot SL5 7HQ

    20/01274/FULL Submitted 3 Jun 2020 50 yards away

    Temporary change of use of from storage and distribution (Class B8) to a flexible use which includes provision for: storage and distribution (Class B8) and / or Storage of Cars associated with Online Car Sales (Sui Generis) for a period of five years.

    Withdrawn Full applications 55 docs

  • Second Floor Berkshire House 39 - 51 High Street Ascot SL5 7HY

    23/02464/HABREG Submitted 5 Oct 2023 50 yards away

    Approval under regulation 77 of the Conservation (Natural Habitats etc.) Regulations 2017 for application 23/01715/CLAMA for Prior approval to change the use of the second floor from Class E offices to Class C3 dwellinghouses (14 units).

    Refused 8 docs
    Major scheme

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