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Planning application

Berkshire House 39 - 51 High Street Ascot SL5 7HY

Refused Windsor and Maidenhead 21/02260/CLASSO Class O Permitted Development

Works: New dwelling

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

Proposal

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

As published by the council, reference 21/02260/CLASSO

Application record

Reference
21/02260/CLASSO
Type
Class O Permitted Development
Status
Decided
Decision
Prior Approval Required and Refused
Received
20 Jul 2021
Validated
27 Jul 2021
Decided
21 Sep 2021
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.

  • 25/02457/CLAMA Granted

    Berkshire House 39 - 51 High Street Ascot SL5 7HY

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

    Decided 13 Nov 2025 Prior approval
  • 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

Timeline

Dates from the published record

  1. 20 Jul 2021

    Received by Windsor and Maidenhead

  2. 27 Jul 2021

    Validated

    Checked as complete and ready for consideration.

  3. 21 Sep 2021

    Decision issued: Prior Approval Required and Refused

  4. 2 Sep 2026

    Added to PlanIndex

Documents

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

47 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.

Trade members open them 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 500 metres

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

    24/02294/CLAMA Submitted 20 Sep 2024 4m 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

    25/02457/CLAMA Submitted 19 Sep 2025 4m away

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

    Granted Prior approval 28 docs
    Major scheme

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

    23/02464/HABREG Submitted 5 Oct 2023 19m 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

  • 37 Course Road Ascot SL5 7HH

    21/02842/FULL Submitted 21 Sep 2021 59m away

    Single storey rear extension, x1 new rooflight, reconstruction of chimney stack and alteration to fenestration following demolition of existing element.

    Granted Full applications Extension Loft or dormer +2 11 docs
    Small domestic

  • 37 Course Road Ascot SL5 7HH

    21/00841/FULL Submitted 19 Mar 2021 59m away

    Single storey rear extension, raising of ridge to accommodate loft conversion, x1 new dormer to the rear, x3 new rooflights, alteration to fenestration, front entrance door and existing chimney, following demolition of existing rear extension.

    Refused Full applications Extension Loft or dormer +2 26 docs
    Small domestic

  • 33 Course Road Ascot SL5 7HH

    21/03241/FULL Submitted 1 Nov 2021 62m away

    Single storey side/rear extension and x2 new rooflights to front elevation following demolition of existing element.

    Granted Full applications Extension Loft or dormer +1 14 docs
    Small domestic

In Windsor and Maidenhead

  • 26/01912/PDXL Granted

    Fourwinds 2 Green Lane Ascot SL5 7QJ

    Single storey rear extension no greater than 7.46m in depth, 3.20m high with an eaves height of 2.45m.

    3 Aug 2026 Prior approval
  • 26/01831/PDXL Granted

    1 Bell View Windsor SL4 4ET

    Single storey rear extension no greater than 4.30m in depth, 2.80m high with an eaves height of 2.50m.

    27 Jul 2026 Prior approval
  • 26/01894/PDXL Granted

    1 Grange Lane Cookham Maidenhead SL6 9RP

    1No. single storey rear extension and 1No. single storey side/rear extension no greater than 8.00m in depth, 3.50m high with an eaves height of 2.50m.

    3 Aug 2026 Prior approval
  • 26/01822/PDXL Granted

    Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB

    Single storey side/rear extension no greater than 8.00m in depth, 4.00m high with an eaves height of 3.80m.

    24 Jul 2026 Prior approval
  • 26/01846/PDXL Granted

    24 New Road Datchet Slough SL3 9JB

    Single storey rear extension no greater than 4.00m in depth, 3.20m high with an eaves height of 3.00m.

    27 Jul 2026 Prior approval