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Planning application

Flat 2 5 Montagu Square London W1H 2LA

Decided Westminster 26/04418/FULL Full applications

Works: Windows or glazing

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

Installation of secondary glazing to existing historic single glazed timber windows. Replacement of existing window with new timber double glazed unit.

As published by the council, reference 26/04418/FULL

Application record

Reference
26/04418/FULL
Category
Full applications
Status
Decided
Received
3 Jul 2026
Validated
3 Jul 2026
Postcode
W1H 2LA

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2026.

  • 26/04419/LBC Decided

    Flat 2 5 Montagu Square London W1H 2LA

    Installation of secondary glazing to existing historic single glazed timber windows. Replacement of existing window with new timber double glazed unit.

    Submitted 3 Jul 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 3 Jul 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. 11 Sep 2026

    Status changed to Decided

    Previously Pending.

After the decision

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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

  • Flat 2 5 Montagu Square London W1H 2LA

    26/04419/LBC Submitted 3 Jul 2026 50 yards away

    90% historically approved · decision due ~28 Aug

    Installation of secondary glazing to existing historic single glazed timber windows. Replacement of existing window with new timber double glazed unit.

    Decided Heritage and listed buildings Windows or glazing

  • 1 Gloucester Place Mews London W1U 8BA

    25/06633/FULL Submitted 16 Sep 2025 50 yards away

    Removal of the existing asphalt flat roof at first floor level and installation of a ventilated lead roof with other associated works.

    Granted Full applications 12 docs

  • 1 Montagu Square London W1H 2LA

    25/06616/LBC Submitted 16 Sep 2025 50 yards away

    Installation of a replacement Portland stone step to match existing. Installation of reinforcing bars to horizontal mortar beds at basement and ground floor levels.

    Granted Heritage and listed buildings 11 docs

  • 27 Gloucester Place London W1U 8HU

    22/03799/LBC Submitted 10 Jun 2022 50 yards away

    Internal alterations including opening through party wall at ground floor level. (Site includes 29 Gloucester Place)

    Granted Heritage and listed buildings 13 docs

  • 8 Montagu Square London W1H 2LB

    26/01123/LBC Submitted 23 Feb 2026 50 yards away

    90% historically approved · decision due ~20 May

    Refurbishment works to the main roof including new roof slates, tapered lead valley gutters and new lead roof covering to existing dormer and refurbishment of lead box gutter on the rear elevation.

    Awaiting decision Heritage and listed buildings Loft or dormer Roofing 22 docs

  • 29 Gloucester Place London W1U 8HT

    26/02601/LBC Submitted 20 Apr 2026 50 yards away

    90% historically approved · decision due ~15 Jun

    Installation of lightweight metal stud partitions finished with plasterboard and a skim coat to 2nd , 3rd and 4th floor offices.

    Awaiting decision Heritage and listed buildings 12 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront with Medication Dispensing Outlet.

    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 replacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06294/FULL Awaiting decision

    15 Eaton Mews South London SW1W 9HP

    Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06317/FULL Awaiting decision

    124 Hamilton Terrace London NW8 9UT

    Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06318/LBC)

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06273/FULL Awaiting decision

    9A Grosvenor Square London W1K 5AE

    Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

    Received 14 Sep, published by the council 22 Sep 2026 Full applications