Planning application
2024/4277/L
23 Mercer Street London Camden WC2H 9QR
Proposal
Excavation of the existing basement level, reconfiguration and reordering of internal layouts, and removal and replacement of the existing lightwell glazed infill.
As published by the council, reference 2024/4277/L
Timeline
Dates from the published record
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22 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 Camden 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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2024/4161/P Awaiting decision
23 Mercer Street London WC2H 9QR
Excavation of the existing basement level, and removal and replacement of the existing lightwell glazed infill.
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2010/0574/P Granted
23 Mercer Street London WC2H 9QR
Reinstating of existing Pulley at 3rd floor level and retractable platform at 1st, 2nd and 3rd floor levels (C3)
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2010/0401/L Granted
23 Mercer Street London WC1H 9QR
Reinstating of existing Pulley at 3rd floor level and retractable platform at 1st, 2nd and 3rd floor levels (C3)
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2015/5451/L Granted
27 Mercer Street London WC2H 9QR
Internal alterations at basement and ground floor levels and erection of glazing over rear courtyard.
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2015/4525/P Granted
27 Mercer Street London WC2H 9QR
Installation of glazing over rear courtyard and internal alterations.
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2016/6096/L Granted
27 Mercer Street London WC2H 9QR
Details of condition 2, as required by Listed Building Consent ref 2015/5451/L (dated 03/12/2015) for internal alterations at basement and ground floor levels and erection of glazing over rear courtyard.
Other heritage and listed buildings applications
In Camden
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2026/3248/L Awaiting decision
15 Eton Villas London NW3 4SG
Single storey rear extension, internal reconfigurations, installation of double-glazed windows and doors, new air-conditioning units, landscaping to rear garden and erection of outbuilding amongst other alterations to the property.
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2026/3213/L Awaiting decision
51, 53, 55, 57 Lamb's Conduit Street London Camden WC1N 3NB
Installation of gas infrastructure including an external gas riser, associated pipework, and internal alterations comprising the relocation of gas meters and associated connections
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2026/2318/L Granted
90 Frognal London NW3 6XB
Structural strengthening of underground vault and underpinning of northern side of ground-floor boot room.
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2026/2136/L Granted
45 Downshire Hill London NW3 1NU
Proposed repair and replacement of front elevation windows with matching single glazed timber sash units. Replacement modern French doors in slim-profile double glazing. Rear windows retained, and repaired as required.
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2026/2122/L Granted
6 Royal College Street London NW1 0TH
Various internal and external changes, including replacement and alteration to timber windows, adjustments to internal layout, installation of fire-rated doors and emergency lighting, relocation and rearrangement of bathroom and kitchen (retrospective).