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Planning application

Flat 19 York House 39 Upper Montagu Street London W1H 1FR

Granted Westminster 25/06040/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

Installation of double glazed steel casement windows within the retained existing timber frames to front and rear of Flat 19.

As published by the council, reference 25/06040/FULL

Application record

Reference
25/06040/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
22 Aug 2025
Validated
9 Oct 2025
Decided
30 Mar 2026
Ward
Marylebone
Decision by
Delegated Decision
Postcode
W1H 1FR

Timeline

Dates from the published record

  1. 22 Aug 2025

    Received by Westminster

  2. 9 Oct 2025

    Validated

    Checked as complete and ready for consideration.

  3. 30 Mar 2026

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Annabel Brown Architect Agent, an architecture practice registered in Maldon

Active · incorporated 2022 · Maldon

10 applications on PlanIndex · across 4 councils

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

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Documents

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

25 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.

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What this grant of permission means

Westminster granted permission on 30 March 2026, 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 0.3 miles

  • 51 Upper Montagu Street London W1H 1FQ

    26/07161/LBC Submitted 19 Oct 2026 50 yards away

    90% historically approved · decision due ~18 Dec

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  • 51 Upper Montagu Street London W1H 1FQ

    26/06443/ADFULL Submitted 21 Sep 2026 50 yards away

    89% historically approved · decision due ~16 Nov

    Details of Desktop study and Site investigation reports pursuant to partial discharge of Condition 11 (Phase 2 and Phase 3) of planning permission dated 24th October 2025 (RN: 25/03874/FULL).

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  • 51 Upper Montagu Street London W1H 1FQ

    26/00898/ADFULL Submitted 12 Feb 2026 50 yards away

    88% historically approved · decision due ~9 Apr

    Details of supplementary acoustic report, detailed drawings of all new doors and windows, new first floor balconettes and investigative report of Phase 1 pursuant to condition 5, 7, 8 and 11 (part) of planning permission dated 24 October 2025 (RN: 25/03874/FULL).

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    26/00814/ADLBC Submitted 11 Feb 2026 50 yards away

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    Granted Conditions Windows or glazing 12 docs

  • 51 Upper Montagu Street London W1H 1FQ

    25/03874/FULL Submitted 9 Jun 2025 50 yards away

    Internal alterations including lowering of the floor level to the lower ground floor; Installation of replacement modern windows with slimline double-glazed units; external alterations to front and rear elevations to reinstate window baskets; installation of an air source heat pump and replacement of existing railings at main roof level; erection of the rear extension at lower ground floor level to include a green roof; and other associated works.

    Granted Full applications Extension Windows or glazing 36 docs

  • 51 Upper Montagu Street London W1H 1FQ

    25/03875/LBC Submitted 9 Jun 2025 50 yards away

    Internal alterations including lowering of the floor level to the lower ground floor; Installation of replacement modern windows with slimline double-glazed units; external alterations to front and rear elevations to reinstate window baskets; installation of an air source heat pump and replacement of existing railings at main roof level; erection of the rear extension at lower ground floor level to include a green roof; and other associated works.

    Granted Heritage and listed buildings Extension Windows or glazing 37 docs

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