Planning application
Top Floor Flat 71 Randolph Avenue London W9 1DW
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
- Granted As published: 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)
-
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.
Timeline
Dates from the published record
-
29 Oct 2025
Received by Westminster
-
16 Feb 2026
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Related applications
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)
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)
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
16 applications on PlanIndex · across 5 councils · 88% 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 recordDocuments
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.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat 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 0.3 miles
-
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)
Granted Full applications Loft or dormer Windows or glazing 16 docs -
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.
Refused Amendments Loft or dormer Windows or glazing 9 docs -
Flat 3 61 Randolph Avenue London W9 1DW
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
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
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
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
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