Planning application
26/04113/LBC
46 Portland Place London W1B 1NF
Proposal
Installation of replacement all non-original windows and relevant external glazed doors with new painted windows and new glazed painted external doors together with reinstatement of suitable joinery profiles throughout.
As published by the council, reference 26/04113/LBC
Timeline
Dates from the published record
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22 Jun 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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26/04128/LBC Awaiting decision
46 Portland Place London W1B 1NF
Internal alterations to the rear of the first floor comprise the removal of existing non-original internal partitions associated with the WC/shower block and kitchen within the closet wing. All fixtures, fittings, and non-original doors within these areas will be removed. Suspended ceilings will also be taken down to reinstate the original ceiling heights and proportions of the principal rooms. The proposals include the installation of a new WC and tea point, together with associated partitioning. In addition, a new opening will be formed to provide a visual and physical connection between the library/study and the rear seating area. This will be detailed with matching cornices and skirtings to ensure the works are sympathetic to, and consistent with, the character and appearance of the existing historic fabric.
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26/02183/CLEUD Awaiting decision
46 Portland Place London W1B 1NF
Confirmation on planning permission have been lawfully implemented by carrying out a material operation at the site, in accordance with the approved plans (Variation of condition 1 of planning permission dated 29 April 2016 (RN 14/12563/FULL) for the demolition of the rear extension to the building at lower ground, mezzanine, ground and first floor levels and rebuilding to include the creation of a terrace at rear first floor level. Excavation of additional basement levels and installation of plant at main roof and basement level all in association with the use of the property as a single family dwelling (Class C3) from RN 14/12563/FULL. NAMELY, to vary the approved drawings to enable additional excavation at basement levels, installation of photovoltaics at roof level, enlargement of the openings at ground and first floors, to change a window to a door to provide access to the terrace at rear first floor level and to alter the fenestration of the front elevation to the orangery with internal alterations at all floor levels)
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25/08376/FULL Awaiting decision
52 Portland Place London W1B 1NH
Demolition, refurbishment, restoration and alterations to 52 Portland Place as well as removal of existing external condensers at basement, ground, third and fourth floor level and provision of new, consolidated plant and screening at basement and third floor level alongside other associated works. (Linked with 25/08377/LBC)
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25/08377/LBC Awaiting decision
52 Portland Place London W1B 1NH
Demolition, refurbishment, restoration and alterations to 52 Portland Place as well as removal of existing external condensers at basement, ground, third and fourth floor level and provision of new, consolidated plant and screening at basement and third floor level alongside other associated works. (Linked with 25/08376/FULL)
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25/06141/NMA Granted
4 - 5 Cavendish Mews North London W1W 6LA
Amendments to planning permission dated 12th June 2024 (RN:24/00473/FULL) for Erection of a roof extension and alterations to the front elevation to enlarge and alter residential dwelling (Class C3) namely, the repositioning of windows to function as a skylight within the second floor mansard roof, the northernmost rooflight to be repositioned to serve as a secondary means of escape, the northernmost window at first floor level to be reconfigured to match the positioning of the existing surveyed windows and the omission of two rooflights.
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26/00516/NMA Granted
4 - 5 Cavendish Mews North London W1W 6LA
Amendments to planning permission dated 12th June 2024 (RN 24/00473/FULL) for the erection of a roof extension and alterations to the front elevation to enlarge and alter residential dwelling (Class C3). NAMELY, roof extension reprofiling.
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)