Planning application
26/04650/LBC
84 Margaret Street London W1W 8TD
Proposal
Replacement of three existing UPVC windows with new double glazed timber sash windows in place of the previously approved single glazed timber sash windows and secondary glazing arrangement. [Linked to 26/03417/FULL]
As published by the council, reference 26/04650/LBC
Timeline
Dates from the published record
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10 Jul 2026
Received by Westminster
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17 Jul 2026
Validated
Checked as complete and ready for consideration.
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
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26/03417/FULL Awaiting decision
84 Margaret Street London W1W 8TD
Variation of condition 1 of planning permission dated 8th August 2023 (RN:23/01673/FULL) for the: Internal and external alterations including installation of passenger lift within entrance porch with extension in height to 2nd floor. Relocation and replacement of external staircase to west lightwell with new railings to pavement. Installation of glass roof to central courtyard. Installation of two air conditioning units within front lightwell on Margaret Street. General works of repair and refurbishment and replacement of services throughout. NAMELY, to allow replacement of the existing three numbers UPVC windows with new double glazed timber sash windows in place of the previously approved single glazed timber sash windows and secondary glazing arrangement. [Linked to 26/04650/LBC]
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26/00146/NMA Granted
82 Margaret Street London W1W 8LH
Amendments to planning permission dated 10th November 2025 (RN 25/02820/FULL) for 'Alterations including opening of laundry building within the central courtyard at ground floor level; excavation to lower sections of the existing lower ground floor accommodation; erection of an infill extension at lower ground floor level with courtyard above; erection of dummy mansard to the rear of All Saints House to screen new plant; all in connection with the use of part lower ground, part ground and part ground upper floors as 29 units for short to medium stay temporary visitor accommodation (sui generis); use of part lower ground, part ground and part first floor as an event space (Sui Generis); use of part ground floor as lounge/co-working space (Class E); and provision of plant ancillary to the building at basement level. NAMELY, to revise the description of development to; 'Alterations including opening of laundry building within the central courtyard at ground floor level; excavation to lower sections of the existing lower ground floor accommodation; erection of an infill extension at lower ground floor level with courtyard above; erection of dummy mansard to the rear of All Saints House to screen new plant; all in connection with the use of part lower ground, part ground and part ground upper floors as units for short to medium stay temporary visitor accommodation (sui generis); use of part lower ground, part ground and part first floor as an event space (Sui Generis); use of part ground floor as lounge/co-working space (Class E); and provision of plant ancillary to the building at basement level' and to add a condition to ensure that the development provides 29 units for short to medium stay temporary visitor accommodation (sui generis).
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26/04725/NMA Awaiting decision
82 Margaret Street London W1W 8LH
Amendments to planning permission dated 10th November (RN 25/02820/FULL) for, 'Alterations including opening of laundry building within the central courtyard at ground floor level; excavation to lower sections of the existing lower ground floor accommodation; erection of an infill extension at lower ground floor level with courtyard above; erection of dummy mansard to the rear of All Saints House to screen new plant; all in connection with the use of part lower ground, part ground and part ground upper floors as 29 units for short to medium stay temporary visitor accommodation (sui generis); use of part lower ground, part ground and part first floor as an event space (Sui Generis); use of part ground floor as lounge/co-working space (Class E); and provision of plant ancillary to the building at basement level'; NAMELY, amendments to the wording of Condition 11, to broaden the function of the ground floor level space beyond its use by occupiers of the visitor accommodation in the building for working, socialising, entertaining, dining or as a co-working space, and to allow for the display or retail sale of goods, other than hot food as permitted by Class E(a).
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26/01990/ADV Awaiting decision
82 Margaret Street London W1W 8LH
Display of one externally illuminated projecting sign measuring 0.57m x 0.57m and three plaque signs measuring 0.245m x 0.38m, 0.15m x 0.38m and 0.15m x 0.3m on the Margaret Street and Marylebone Passage elevations. (Linked with 26/02396/LBC)
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26/00758/FULL Awaiting decision
82 Margaret Street London W1W 8LH
Variation of Conditions 27 and 33 of planning permission dated 10 November 2025 (RN: 25/02820/FULL) for 'Alterations including opening of laundry building within the central courtyard at ground floor level; excavation to lower sections of the existing lower ground floor accommodation; erection of an infill extension at lower ground floor level with courtyard above; erection of dummy mansard to the rear of All Saints House to screen new plant; all in connection with the use of part lower ground, part ground and part ground upper floors as 29 units for short to medium stay temporary visitor accommodation (sui generis); use of part lower ground, part ground and part first floor as an event space (Sui Generis); use of part ground floor as lounge/co-working space (Class E); and provision of plant ancillary to the building at basement level'; NAMELY to create an additional unit of short to medium stay temporary visitor accommodation at lower ground floor level.
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26/01972/ADLBC Awaiting decision
82 Margaret Street London W1W 8LH
Detailed drawings of the new windows and roof lights including key junctions with existing or adjoining fabric and details of open ability, new doors, including key junctions with existing or adjoining fabric, railings, including key junctions with existing or adjoining fabric,detailed study of the 'laundry' with detailed drawings of proposals, including key junctions with existing or adjoining fabric and proposed openings, conservation strategy and restoration/conservation details for the chapel including method statements and reports, in consultation with the Victorian Society, floor build ups including key junctions with existing or adjoining fabric and threshold junctions, coordinated and accurately detailed services and distribution including key junctions with existing or adjoining fabric pursuant to condition 6 (1-7) of listed building dated 10th November 2025 (RN: 25/03052/LBC)
Other heritage and listed buildings applications
In Westminster
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26/04984/LBC Awaiting decision
47G Randolph Avenue London W9 1BQ
Installation of replacement fire surround.
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26/04997/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of a morning room side extension. (Linked to 26/04996/FULL)
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26/04979/LBC Awaiting decision
12 Brewer Street London W1F 0SF
Internal alterations including removal of internal enclosures; Replacement flooring, shelving and slatwall systems, staircase handrail repair and other associated joinery works.
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26/04987/LBC Awaiting decision
Basement And Ground Floor 8 Ganton Street London W1F 7QL
Repainting of the existing timber shopfront, hand-painted fascia lettering, installation of a new hanging sign using the existing projecting sign bracket, and installation of a discreet fascia-mounted LED trough light.
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26/04995/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of rear conservatory extensions and an entrance loggia to side with roof terrace above, together with associated landscaping and alterations. (Linked with 26/04994/FULL)