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Planning application

InVentiv Health Thames House 17 Marlow Road Maidenhead SL6 7AA

Granted Windsor and Maidenhead 21/02171/CLASSO Class O Permitted Development

Works: New dwelling

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

Proposal

Change of use from offices (Class B1(a)) to dwellinghouses (Class C3) to create x40 flats.

As published by the council, reference 21/02171/CLASSO

Application record

Reference
21/02171/CLASSO
Type
Class O Permitted Development
Status
Decided
Decision
Prior Approval Required and Granted
Received
12 Jul 2021
Validated
15 Jul 2021
Decided
8 Sep 2021
Ward
St Marys
Parish
Maidenhead Unparished
Decision by
Delegated
Postcode
SL6 7AA

Site history

Applications at this address on the Windsor and Maidenhead register

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

  • 23/00556/PT20AA Refused

    InVentiv Health Thames House 17 Marlow Road Maidenhead SL6 7AA

    Application for prior approval for construction of two additional storeys to the building to provide 27 additional dwellings.

    Decided 26 Apr 2023
  • 22/03342/PT20AA Refused

    InVentiv Health Thames House 17 Marlow Road Maidenhead SL6 7AA

    Application for prior approval for construction of two additional storeys to building providing 33 additional dwellings

    Decided 20 Feb 2023

Timeline

Dates from the published record

  1. 12 Jul 2021

    Received by Windsor and Maidenhead

  2. 15 Jul 2021

    Validated

    Checked as complete and ready for consideration.

  3. 8 Sep 2021

    Decision issued: Prior Approval Required and Granted

  4. 3 Sep 2026

    Added to PlanIndex

Documents

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

66 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 grant of permission means

Windsor and Maidenhead granted permission on 8 September 2021, 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 500 metres

  • InVentiv Health Thames House 17 Marlow Road Maidenhead SL6 7AA

    22/03342/PT20AA Submitted 14 Dec 2022 2m away

    Application for prior approval for construction of two additional storeys to building providing 33 additional dwellings

    Refused 106 docs

  • InVentiv Health Thames House 17 Marlow Road Maidenhead SL6 7AA

    23/00556/PT20AA Submitted 2 Mar 2023 2m away

    Application for prior approval for construction of two additional storeys to the building to provide 27 additional dwellings.

    Refused 84 docs

  • Thames House 17 Marlow Road Maidenhead SL6 7AA

    26/01126/CLAMA Submitted 7 May 2026 6m away

    Prior approval for the change of use from Commercial, Business and Service (Use Class E) to create 43no. dwellings (Use Class C3).

    Granted Prior approval 65 docs
    Major scheme

  • Thames House 17 Marlow Road Maidenhead SL6 7AA

    25/02838/CLAMA Submitted 27 Oct 2025 6m away

    Prior approval for the change of use from Commercial, Business and Service (Use Class E) to create 40no. dwellings (Use Class C3).

    Refused Prior approval 69 docs
    Major scheme

  • 16 Castle Hill Maidenhead SL6 4JJ

    23/00313/FULL Submitted 6 Feb 2023 48m away

    New garage and 1no additional parking spaces with enclosure following the demolition of the existing garage.

    Withdrawn Full applications Demolition 17 docs

  • 16 Castle Hill Maidenhead SL6 4JJ

    26/00649/LBC Submitted 11 Mar 2026 54m away

    Consent for a single storey side/rear extension following demolition of existing side/rear element.

    Granted Heritage and listed buildings Extension Demolition 17 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