Planning application
2025/2925/L
3 Sandwich Street London WC1H 9PL
Proposal
The conversion of two flats into a single dwelling with associated internal alterations, erection of rear extension and alterations to windows
As published by the council, reference 2025/2925/L
Timeline
Dates from the published record
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3 Sep 2025
Decision issued: Granted
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22 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
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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2025/2875/P Granted
3 Sandwich Street London WC1H 9PL
The conversion of two flats into a single dwelling, erection of rear extension with terrace and alterations to windows.
-
2021/4070/P Granted
3 Sandwich Street London WC1H 9PL
Conversion of garage to bedroom including replacement of two doors with windows at rear basement level
-
2024/0818/L Granted
4 Sandwich Street London Camden WC1H 9PL
Replacement of the main roof covering in natural slates (Spanish), replacement of lead roof hatch with small black rooflight, and like-for-like replacement of the rear flat roof covering. (Retrospective)
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2012/0175/L Withdrawn
5 SANDWICH STREET LONDON WC1H 9PL
Conversion from two residential units (1x 2-bed flat and 1x 4-bed maisonette) to six residential units (4x 1-bed flats and 2x studios), installation of stairs in lightwell, door to front elevation, door and replacement window to rear elevation all at basement level, alterations to windows at ground floor level rear elevation, new gate within railings at front of property and associated internal alterations.
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2011/6459/P Withdrawn
5 SANDWICH STREET LONDON WC1H 9PL
Conversion from two residential units (1x 2-bed flat and 1x 4-bed maisonette) to six residential units (4x 1-bed flats and 2x studios), installation of stairs in lightwell, door to front elevation, door and replacement window to rear elevation all at basement level, alterations to windows at ground floor level rear elevation, new gate within railings at front of property.
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2026/3019/P Awaiting decision
1 Sandwich Street London WC1H 9PF
Conversion of building from office use (Class E) to provide three residential flats (Class C3), construction of a rear extension, re-introduction of front lightwell and staircase, treatment to shopfront glazing and other associated works
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.
-
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
-
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.
-
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).