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Planning application

4 Mansfield Mews London W1G 9NL

Withdrawn Westminster 25/05099/FULL Full Planning Permission Application

Works: Roofing Windows or glazing

Relates to 25/05100/LBC

Withdrawn before a decision, so it carries no planning weight. A revised scheme can be submitted at any time.

Proposal

Partial removal of existing roof to create new roof terrace, accessible via a new stair with 0.9m balustrade perimeter; new glazed screen to courtyard; new window to the South Elevation; replacement of external door with a window at south elevation; re-covering and reinsulation of roof pitch on the Mews road elevation; modifications to the Mews Elevation and the creation of an internal bin store; and internal alterations to create a new double-height living space and reconfiguring the layout to incorporate one bedroom, a kitchen, a shower room, and a WC. (Linked with 25/05100/LBC)

As published by the council, reference 25/05099/FULL

Application record

Reference
25/05099/FULL
Type
Full Planning Permission Application
Status
Withdrawn
Decision
Withdrawn As published: Application Withdrawn
Received
22 Jul 2025
Validated
31 Jul 2025
Decided
1 Oct 2025
Ward
Marylebone
Postcode
W1G 9NL

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2025: 2 approved, 0 refused.

  • 25/08604/LBC Granted

    4 Mansfield Mews London W1G 9NL

    Replacement of garage door with smaller size door; internal layout alterations; and associated works. (Linked with 25/08603/FULL)

    Decided 24 Apr 2026 Heritage and listed buildings
  • 25/08603/FULL Granted

    4 Mansfield Mews London W1G 9NL

    Replacement of garage door with smaller size door; internal layout alterations; and associated works. (Linked with 25/08604/LBC)

    Decided 24 Apr 2026 Full applications
  • 25/05100/LBC Withdrawn

    4 Mansfield Mews London W1G 9NL

    Partial removal of existing roof to create new roof terrace, accessible via a new stair with 0.9m balustrade perimeter; new glazed screen to courtyard; new window to the South Elevation; replacement of external door with a window at south elevation; re-covering and reinsulation ofr oof pitch on the Mews road elevation; modifications to the Mews Elevation and the creation of an internal bin store; and internal alterations to create a new double-height living space and reconfiguring the layout to incorporate one bedroom, a kitchen, a shower room, and a WC. (Linked to 25/05099/FULL)

    Decided 1 Oct 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 22 Jul 2025

    Received by Westminster

  2. 31 Jul 2025

    Validated

    Checked as complete and ready for consideration.

  3. 1 Oct 2025

    Decision issued: Application Withdrawn

  4. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/05100/LBC Withdrawn

    4 Mansfield Mews London W1G 9NL

    Partial removal of existing roof to create new roof terrace, accessible via a new stair with 0.9m balustrade perimeter; new glazed screen to courtyard; new window to the South Elevation; replacement of external door with a window at south elevation; re-covering and reinsulation ofr oof pitch on the Mews road elevation; modifications to the Mews Elevation and the creation of an internal bin store; and internal alterations to create a new double-height living space and reconfiguring the layout to incorporate one bedroom, a kitchen, a shower room, and a WC. (Linked to 25/05099/FULL)

    Decided 1 Oct 2025 Heritage and listed buildings

1 later application on the register refers to this one:

  • 25/05100/LBC Withdrawn

    4 Mansfield Mews London W1G 9NL

    Partial removal of existing roof to create new roof terrace, accessible via a new stair with 0.9m balustrade perimeter; new glazed screen to courtyard; new window to the South Elevation; replacement of external door with a window at south elevation; re-covering and reinsulation ofr oof pitch on the Mews road elevation; modifications to the Mews Elevation and the creation of an internal bin store; and internal alterations to create a new double-height living space and reconfiguring the layout to incorporate one bedroom, a kitchen, a shower room, and a WC. (Linked to 25/05099/FULL)

    Decided 1 Oct 2025 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

Giles Quarme Architects Ltd Agent, an architecture practice registered in London

Active · incorporated 2019 · London

20 applications on PlanIndex · across 4 councils · 100% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

20 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 withdrawal means

The applicant withdrew this application before Westminster decided it, and is free to submit a revised scheme at any time. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 4 Mansfield Mews London W1G 9NL

    25/08604/LBC Submitted 25 Nov 2025 50 yards away

    Replacement of garage door with smaller size door; internal layout alterations; and associated works. (Linked with 25/08603/FULL)

    Granted Heritage and listed buildings 12 docs

  • 4 Mansfield Mews London W1G 9NL

    25/08603/FULL Submitted 25 Nov 2025 50 yards away

    Replacement of garage door with smaller size door; internal layout alterations; and associated works. (Linked with 25/08604/LBC)

    Granted Full applications 14 docs

  • 4 Mansfield Mews London W1G 9NL

    25/05100/LBC Submitted 22 Jul 2025 50 yards away

    Partial removal of existing roof to create new roof terrace, accessible via a new stair with 0.9m balustrade perimeter; new glazed screen to courtyard; new window to the South Elevation; replacement of external door with a window at south elevation; re-covering and reinsulation ofr oof pitch on the Mews road elevation; modifications to the Mews Elevation and the creation of an internal bin store; and internal alterations to create a new double-height living space and reconfiguring the layout to incorporate one bedroom, a kitchen, a shower room, and a WC. (Linked to 25/05099/FULL)

    Withdrawn Heritage and listed buildings Roofing Windows or glazing 25 docs

  • Orbis House 5 Mansfield Street London W1G 9NG

    25/08080/CLEUD Submitted 6 Nov 2025 50 yards away

    86% historically approved · decision due ~1 Jan

    Confirmation that the material change of use from office to use as a single family dwelling house under planning permission (RN 12/09926/FULL) has taken place and that use as a single family dwelling house is now the building's existing lawful use.

    Awaiting decision Lawful development 20 docs
    Domestic

  • Orbis House 5 Mansfield Street London W1G 9NG

    26/00954/ADFULL Submitted 16 Feb 2026 50 yards away

    Detailed specifications, and drawings at 1:10 with full size details, of refurbishment works to the windows, and of detailed drawings at 1: 10 with full size sections through the glazing bars of the new sash windows and French windows pursuant to condition 6 of planning permission dated 5th September 2024 (RN:24/01895/FULL)

    Granted Full applications Windows or glazing 41 docs

  • Orbis House 5 Mansfield Street London W1G 9NG

    26/00940/ADLBC Submitted 16 Feb 2026 50 yards away

    Detailed specifications, and drawings at 1:10 with full size details, of refurbishment works to the windows, and of detailed drawings at 1: 10 with full size sections through the glazing bars of the new sash windows and French windows pursuant to Condition 6 of Listed Building Consent 05 September 2024 (RN24/01896/LBC)

    Granted Conditions Windows or glazing 20 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06287/FULL Awaiting decision

    Barness Court 6 - 8 Westbourne Terrace London W2 3UW

    Installation of a new riser as per GW10 design comprising a single riser with 7 entries and 9 Taylor valves to be installed. (Linked with 26/06288/LBC)

    Received 14 Sep, published by the council 21 Sep 2026 Full applications
  • 26/06278/FULL Awaiting decision

    40 Wellington Road London NW8 9TJ

    Installation of a new external access ramp/slope to provide accessibility to the Barclays bank ATM.

    Received 14 Sep, published by the council 21 Sep 2026 Full applications
  • 26/06269/FULL Awaiting decision

    Maisonette Basement And Ground Floor 101 Hereford Road London W2 5BB

    Amalgamation of existing lower ground and ground floor maisonette with the first floor flat to create a single dwelling and associated internal works including creation of a staircase. (Linked with 26/06270/LBC)

    Received 14 Sep, published by the council 21 Sep 2026 Full applications