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Planning application

Top Floor Flat 71 Randolph Avenue London W9 1DW

Granted Westminster 25/07831/LBC Listed Building Consent Application

Works: Loft or dormer Windows or glazing

Relates to 25/07830/FULL

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

Proposal

Replacement of existing casement windows to the two front dormer windows at fourth floor level with new timber sliding sash windows. (Linked with 25/07830/FULL)

As published by the council, reference 25/07831/LBC

Application record

Reference
25/07831/LBC
Type
Listed Building Consent Application
Status
Decided
Decision
Application Permitted
Received
29 Oct 2025
Validated
29 Oct 2025
Decided
16 Feb 2026
Ward
Little Venice
Decision by
Delegated Decision
Postcode
W9 1DW

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2025: 2 approved, 1 refused.

  • 25/07830/FULL Granted

    Top Floor Flat 71 Randolph Avenue London W9 1DW

    Replacement of existing casement windows to the two front dormer windows at fourth floor level with new timber sliding sash windows. (Linked with 25/07831/LBC)

    Decided 16 Feb 2026 Full applications
  • 25/06214/NMA Refused

    Top Floor Flat 71 Randolph Avenue London W9 1DW

    Amendments to planning permission dated 20th December 2024 (RN: 24/07825/FULL) for the reconfiguring the internal staircase and layout, expanding and relocating the existing rear mansard window and door to terrace and adding two conservation-style rooflights to the rear slope of the existing roof. NAMELY, to replace two existing casement windows on the front facade at fourth-floor level with sash windows.

    Decided 29 Sep 2025 Amendments

Timeline

Dates from the published record

  1. 29 Oct 2025

    Received by Westminster

  2. 16 Feb 2026

    Decision issued: Application Permitted

  3. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/07830/FULL Granted

    Top Floor Flat 71 Randolph Avenue London W9 1DW

    Replacement of existing casement windows to the two front dormer windows at fourth floor level with new timber sliding sash windows. (Linked with 25/07831/LBC)

    Decided 16 Feb 2026 Full applications

1 later application on the register refers to this one:

  • 25/07830/FULL Granted

    Top Floor Flat 71 Randolph Avenue London W9 1DW

    Replacement of existing casement windows to the two front dormer windows at fourth floor level with new timber sliding sash windows. (Linked with 25/07831/LBC)

    Decided 16 Feb 2026 Full applications

Who's behind it

Company information only, from the register and Companies House

Syte Architects Ltd Agent, an architecture practice registered in London

Active · incorporated 2002 · London

15 applications on PlanIndex · across 4 councils · 87% 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

3 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 16 February 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 heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • Top Floor Flat 71 Randolph Avenue London W9 1DW

    25/07830/FULL Submitted 29 Oct 2025 0m away

    Replacement of existing casement windows to the two front dormer windows at fourth floor level with new timber sliding sash windows. (Linked with 25/07831/LBC)

    Granted Full applications Loft or dormer Windows or glazing 16 docs

  • Top Floor Flat 71 Randolph Avenue London W9 1DW

    25/06214/NMA Submitted 2 Sep 2025 2m away

    Amendments to planning permission dated 20th December 2024 (RN: 24/07825/FULL) for the reconfiguring the internal staircase and layout, expanding and relocating the existing rear mansard window and door to terrace and adding two conservation-style rooflights to the rear slope of the existing roof. NAMELY, to replace two existing casement windows on the front facade at fourth-floor level with sash windows.

    Refused Amendments Loft or dormer Windows or glazing 9 docs

  • Flat 3 61 Randolph Avenue London W9 1DW

    25/07782/ADLBC Submitted 28 Oct 2025 2m away

    Detailed drawings of the windows pursuant to condition 3 of listed building consent dated 19th September 2025 (RN: 25/05295/LBC).

    Refused Conditions Windows or glazing 9 docs

  • Flat 3 61 Randolph Avenue London W9 1DW

    25/08789/ADLBC Submitted 3 Dec 2025 2m away

    Details of changes to windows pursuant to condition 3 of listed building consent dated 18 September 2025 (RN: 25/05295/LBC)

    Granted Conditions Windows or glazing 3 docs

  • Basement Flat 77 Randolph Avenue London W9 1DW

    20/04840/FULL Submitted 31 Jul 2020 21m away

    Alterations to front lightwell including alteration to stairs, railings, windows and doors and infill under front entrance bridge. (Linked to 20/07041/LBC).

    Granted Full applications Extension Windows or glazing 31 docs

  • Flat 2 61 Randolph Avenue London W9 1DW

    25/07766/LBC Submitted 27 Oct 2025 40m away

    Proposed upgrading of windows within the front elevation of the lower ground floor level flat and installation of an air source heat pump, the replacement of the kitchen window with a door within the existing opening and minimal internal alterations and new floor finishes. (Linked to 25/07765/FULL)

    Granted Heritage and listed buildings Windows or glazing 35 docs

In Westminster

  • 26/06250/LBC Awaiting decision

    53 Wimpole Street London W1G 8YH

    Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06249/FULL)

    11 Sep 2026 Heritage and listed buildings
  • 26/06203/LBC Awaiting decision

    106 Blandford Street London W1U 8AG

    Installation of two roof-mounted anchor posts. (Linked to 26/06202/FULL)

    10 Sep 2026 Heritage and listed buildings
  • 26/06187/LBC Awaiting decision

    4 Shepherd Market London W1J 7QB

    Installation of wall mounted highway street light on to the facade of 4 Shepherd Market.

    10 Sep 2026 Heritage and listed buildings
  • 26/06216/LBC Awaiting decision

    208 Regent Street London W1B 5BD

    Strip-out of existing, modern retail unit fixtures, fittings, stair and services, with retention of heritage and listed features, including shopfront and entrances, and ground floor ceiling details and features. Fit-out of new retail fittings, fixtures and services. Retention of shopfront with new 'like-for-like' signage and a new flag pole.

    10 Sep 2026 Heritage and listed buildings
  • 26/06176/LBC Awaiting decision

    46 Gloucester Place London W1U 8HG

    Installation of 1,100 mm high protective railings along the existing roof-level access walkway. (Linked to 26/06178/FULL)

    9 Sep 2026 Heritage and listed buildings