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Planning application

20 Hertford Street London W1J 7RX

Withdrawn Westminster 25/08992/CLOPUD Certificate of Lawfulness (proposed)

Works: Windows or glazing

Withdrawn before a decision, so it carries no planning weight.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

Proposal

Replacement of existing timber-framed windows with new traditionally detailed timber windows matching the existing openings in size and opening style, with a traditional glazing style.

As published by the council, reference 25/08992/CLOPUD

Application record

Reference
25/08992/CLOPUD
Type
Certificate of Lawfulness (proposed)
Status
Withdrawn
Decision
Withdrawn As published: Application Withdrawn
Received
11 Dec 2025
Validated
11 Dec 2025
Decided
7 Mar 2026
Ward
West End
Postcode
W1J 7RX

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2025.

  • 26/00932/FULL Awaiting decision

    20 Hertford Street London W1J 7RX

    Replacement of existing timber-framed windows with new traditionally detailed timber windows matching the existing openings in size and opening style. Minor internal alterations to lower ground floor level, including the replacement of an existing window with a traditional door into the lightwell.

    Submitted 13 Feb 2026 Full applications
  • 25/08753/FULL Awaiting decision

    20 Hertford Street London W1J 7RX

    Rear extension at fourth floor, installation of new double glazed sliding doors to existing terrace; internal layout amendments; alteration of the existing terrace rooflight, installation of automatic opening vent (AOV) and installation of two new rooflights on main roof.

    Submitted 2 Dec 2025 Full applications

Timeline

Dates from the published record

  1. 11 Dec 2025

    Received by Westminster

  2. 7 Mar 2026

    Decision issued: Application Withdrawn

  3. 29 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Echlin Studio Ltd Agent, registered in London

Active · incorporated 2019 · London

3 applications on PlanIndex

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Documents

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

32 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 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 lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 20 Hertford Street London W1J 7RX

    25/08753/FULL Submitted 2 Dec 2025 50 yards away

    88% historically approved · decision due ~27 Jan

    Rear extension at fourth floor, installation of new double glazed sliding doors to existing terrace; internal layout amendments; alteration of the existing terrace rooflight, installation of automatic opening vent (AOV) and installation of two new rooflights on main roof.

    Awaiting decision Full applications Extension Loft or dormer +1 30 docs

  • 20 Hertford Street London W1J 7RX

    26/00932/FULL Submitted 13 Feb 2026 50 yards away

    88% historically approved · decision due ~10 Apr

    Replacement of existing timber-framed windows with new traditionally detailed timber windows matching the existing openings in size and opening style. Minor internal alterations to lower ground floor level, including the replacement of an existing window with a traditional door into the lightwell.

    Awaiting decision Full applications Windows or glazing 38 docs

  • 17 Hertford Street London W1J 7RS

    26/06165/LBC Submitted 9 Sep 2026 50 yards away

    90% historically approved · decision due ~4 Nov

    Internal alterations to the basement including new lightweight timber-stud partitions to reorganise the existing basement layout; Installation of new sanitaryware in a newly configured bathroom; Replacement of modern kitchen fittings; and Installation of traditional four-panel timber doors, architraves and ironmongery designed to match existing doors.

    Decided Heritage and listed buildings

  • 17 Hertford Street London W1J 7RS

    26/03484/ADLBC Submitted 22 May 2026 50 yards away

    89% historically approved · decision due ~3 Aug

    Details of all new windows / reduction in size of dormer windows / facing materials pursuant to conditions 4, 5 and 7 of listed building consent dated 13 February 2025 (RN: 24/03932/LBC) [Linked to 26/03406/ADFULL]

    Decided Loft or dormer Windows or glazing 8 docs

  • 17 Hertford Street London W1J 7RS

    26/03406/ADFULL Submitted 22 May 2026 50 yards away

    89% historically approved · decision due ~3 Aug

    Details of all new windows / reduction in size of dormer windows / facing materials pursuant to conditions 4, 5 and 6 of planning permission dated 13 February 2025 (RN: 24/03931/FULL) [Linked to 26/03484/ADLBC]

    Decided Loft or dormer Windows or glazing 8 docs

  • 17 Hertford Street London W1J 7RS

    25/07827/FULL Submitted 29 Oct 2025 50 yards away

    Addition of a fourth-floor mansard roof to allow for the creation of a one-bedroom apartment for short term letting purposes, replacement of windows at third floor level, internal and external restoration, redecoration and minor reconfigurations and other associated works. (Linked 25/07828/LBC)

    Withdrawn Full applications Loft or dormer Windows or glazing 37 docs

In Westminster

  • 26/07468/CLOPUD Awaiting decision

    14 - 16 Great Portland Street London W1W 8QW

    Confirmation the demolition of the existing outrigger structure at fifth floor level (the Proposed Works) constitutes the lawful commencement of development pursuant to the Permission.

    Received 3 Nov, published by the council 5 Nov 2026 Lawful development
  • 26/07423/CLOPUD Awaiting decision

    103 Elgin Avenue London W9 2NP

    Painting of the decorative stonework, window frames and doors on the front elevation and front boundary wall

    Received 2 Nov, published by the council 4 Nov 2026 Lawful development
  • 26/07454/CLOPUD Awaiting decision

    10 Stratton Street London W1J 8LG

    Changes to existing windows and doors

    Received 2 Nov, published by the council 5 Nov 2026 Lawful development
  • 26/07381/CLEUD Awaiting decision

    Ground Floor Rear Flat 4 Mozart Street London W10 4LA

    Use of the ground floor rear flat as short-term visitor accommodation.

    Received 28 Oct, published by the council 5 Nov 2026 Lawful development
  • 26/07339/CLOPUD Awaiting decision

    123 Victoria Street London SW1E 6DE

    Use of part of ground floor reception area within Class E including, but not limited to, a retail café (Class E(a)).

    Received 27 Oct, published by the council 30 Oct 2026 Lawful development