Planning application
26/03101/LBC
11 Robert Adam Street London W1U 3HN
Proposal
Installation of new secondary glazing to the internal faces of existing single glazed historic windows , including new double glazed timber windows to replace existing non historic windows. (Linked with 26/03100/FULL)
As published by the council, reference 26/03101/LBC
Timeline
Dates from the published record
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12 May 2026
Received by Westminster
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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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26/03100/FULL Awaiting decision
11 Robert Adam Street London W1U 3HN
Installation of new secondary glazing to the internal faces of existing single glazed historic windows , including new double glazed timber windows to replace existing non historic windows. (Linked with 26/03101/LBC)
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25/08754/NMA Granted
20 Manchester Square London W1U 3PZ
Amendments to planning permission dated 04 September 2020 (RN: 20/03854/FULL) for, 'Demolition and replacement of existing fourth floor, demolition of existing plant room, and erection of a single storey roof extension at fifth floor and rear extension at second to fifth floor levels in connection with existing office (Class B1) use, provision of new main office entrance, flexible use of part ground and basement floor for either retail or office use (Class A1/B1), creation of roof terrace at fifth floor level, provision of cycle parking spaces and facilities, roof plant and associated external alterations, including replacement windows'; NAMELY, to reconfigure the basement level shower and cycle parking facilities.
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26/04276/NMA Awaiting decision
33 Robert Adam Street London W1U 3HP
Amendments to planning permission dated 20th February 2024 (RN:23/06458/FULL) for Removal of facades at Ground & First; New Entrance, with stone features, glazed facade, new entrance doors, and new planters; Replacement of windows; New louvred shutters to South-facing windows; Replacement MEP services and associated plant; New cycle storage in basement; Upgrade to internal offices; New roof covering & insulation and associated works. Namely, relocating the cycle storage one bay to the right within a new secure enclosure, refurbishing the existing lift motor room and relocating the power mains and GF fire curtain control panel into this space, proposing a small plant room for access and an increase in shower provision from one to three units, alongside associated WC.
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26/02559/FULL Awaiting decision
33 Robert Adam Street London W1U 3HP
Variation of condition 3 of planning permission dated 19th February 2024 (RN:23/06458/FULL) for the removal of facades at Ground & First; New Entrance, with stone features, glazed facade, new entrance doors, and new planters; Replacement of windows; New louvred shutters to South-facing windows; Replacement MEP services and associated plant; New cycle storage in basement; Upgrade to internal offices; New roof covering & insulation and associated works. NAMELY, to allow the roof area shown on drawing 0950-GAR-A-0155-P04_PROP_RF can be used for the installation of photovoltaic (PV) panels, to reduce energy demand from the grid and improve the building.
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26/02777/LBC Awaiting decision
Ground Floor 3 Fitzhardinge Street London W1H 6EF
Internal alterations including one new glazed partition off the existing space creating a new meeting room.
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26/04215/LBC Awaiting decision
Ground Floor Front 3 Fitzhardinge Street London W1H 6EF
Installation of a new stud partition wall with glazed screen and single glazed door, sub-dividing the existing single room into two separate rooms.
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)