Skip to content
PlanIndex Get alerts
Menu

Planning application

Flat 45 5 Montagu Mansions London W1U 6LB

Granted Westminster 20/05791/FULL Full Planning Permission Application

Works: Windows or glazing

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

Proposal

Replacement of existing single glazed timber windows with double glazed timber windows.

As published by the council, reference 20/05791/FULL

Application record

Reference
20/05791/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Application Permitted
Received
15 Sep 2020
Validated
2 Oct 2020
Decided
16 Dec 2020
Ward
Marylebone High Street
Decision by
Delegated Decision
Postcode
W1U 6LB

Timeline

Dates from the published record

  1. 15 Sep 2020

    Received by Westminster

  2. 2 Oct 2020

    Validated

    Checked as complete and ready for consideration.

  3. 16 Dec 2020

    Decision issued: Application Permitted

  4. 30 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Agent on file, an architecture practice registered in Barnet

20 applications on PlanIndex · across 5 councils · 67% granted

Trade members see who it is, their full track record, and every application they have filed.

See who's behind it

Documents

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

16 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

Westminster granted permission on 16 December 2020, 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 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 500 metres

  • 95 - 99 Baker Street London W1U 6RN

    26/02458/FULL Submitted 15 Apr 2026 35m away

    87% historically approved · decision due ~25 Jun

    Alterations to the exterior of the building including replacement of external cladding materials to front elevation; and other associated works.

    Awaiting decision Full applications 12 docs
  • 23 York Street London W1U 6PF

    26/05052/FULL Submitted 28 Jul 2026 54m away

    87% historically approved · decision due ~22 Sep

    Internal reconfiguration and refurbishment of the existing residential building to improve the layout of six self-contained flats, together with associated internal alterations, minor external alterations to the rear elevation, replacement of windows and doors where shown, and associated mechanical, electrical and fire safety works. (Linked with 26/05053/LBC)

    Awaiting decision Full applications New dwelling Windows or glazing
  • 23 York Street London W1U 6PF

    26/05053/LBC Submitted 28 Jul 2026 54m away

    90% historically approved · decision due ~22 Sep

    Internal reconfiguration and refurbishment of the existing residential building to improve the layout of six self-contained flats, together with associated internal alterations, minor external alterations to the rear elevation, replacement of windows and doors where shown, and associated mechanical, electrical and fire safety works. (Linked with 26/05052/FULL)

    Awaiting decision Heritage and listed buildings New dwelling Windows or glazing
  • 90 - 91 Crawford Street London W1U 6AZ

    05/00625/ADFULL Submitted 27 Jan 2005 63m away

    Details of management arrangements pursuant to Condition 10 of planning permission dated 09 December 2004 (RN: 03/04690).

    Decided Full applications
  • 10 - 12 Crawford Street London W1U 6AZ

    04/04103/ADV Submitted 28 May 2004 63m away

    Display of illuminated lettering to fascia.

    Granted Advertising 5 docs
  • 10 - 12 Crawford Street London W1U 6AZ

    04/03793/FULL Submitted 19 May 2004 63m away

    Installation of fully openable shopfront.

    Withdrawn Full applications Windows or glazing 6 docs

In Westminster

  • 26/06024/FULL Awaiting decision

    House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA

    Installation of new and replacement electronic equipment within Speaker. (Linked with 26/06025/LBC)

    3 Sep 2026 Full applications
  • 26/06017/FULL Awaiting decision

    38 Lauderdale Mansions Lauderdale Road London W9 1NE

    Installation of an external AC Unit / Heat Pump at roof level.

    2 Sep 2026 Full applications
  • 26/05938/FULL Awaiting decision

    24 Vincent Square London SW1P 2NJ

    Subdivision of existing residential property to create two self-contained 3-bedroom family homes, along with cycle parking and associated external alterations.

    1 Sep 2026 Full applications
  • 26/05935/FULL Awaiting decision

    47 Hereford Road London W2 5AH

    Installation of one number new external condenser unit to the southerly elevation service alley.

    1 Sep 2026 Full applications
  • 26/05959/FULL Awaiting decision

    Basement And Ground Floor 50 New Bond Street London W1S 1BJ

    Installation of three new condensers on the roof, within an existing designated plant area.

    1 Sep 2026 Full applications