Planning application
2016/5102/P
Flat 1st and 2nd Floor 63 Chalton Street London NW1 1HY
Proposal
Erection of mansard roof extension at 2nd floor roof level to provide additional accommodation to existing flat (Class C3).
As published by the council, reference 2016/5102/P
Timeline
Dates from the published record
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11 Nov 2016
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 full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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2023/2739/P Granted
63 Chalton Street London NW1 1HY
Erection of mansard roof extension
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2011/5006/P Refused
65B Chalton Street London NW1 1HY
Erection of rear extension to existing mansard roof, including creation of roof terrace and associated raised parapet at rear third floor level, to provide additional accommodation to existing flat (Class C3).
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2025/4823/P Awaiting decision
A, B, C & D 65 Chalton Street London NW1 1HY
Erection of three storey rear extension and installation of new and replacement windows and doors at basement, ground, first and second floor levels to the front and side elevations.
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2013/1585/P Refused
57 Chalton Street London NW1 1HY
Installation of external staircase with boundary railings to front elevation at ground floor level to create entrance to basement office (Class B1).
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2025/0914/P Granted
70 Churchway London NW1 1LT
Details to discharge Conditions 3 (Details and Materials) of planning permission 2016/3174/P dated 30/10/2020 for the 'Erection of 3 storey building plus basement with rear garden and roof terrace at 1st floor level, comprising 3 x Residential units (1x2 bed & 2x1bed unit) (C3 Use Class) to allow for offsetting of residential accommodation in connection with application 2016/5266/P [53-55 Chalton Street].
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2024/4770/P Refused
70 Churchway London NW1 1LT
Details to discharge Conditions 3 (Details and Materials), 7 (Solar PV), 11 (Biodiversity Enhancements), and 12 (Accessibility) of planning permission 2016/3174/P dated 30/10/2020 for the 'Erection of 3 storey building plus basement with rear garden and roof terrace at 1st floor level, comprising 3 x Residential units (1x2 bed & 2x1bed unit) (C3 Use Class) to allow for offsetting of residential accommodation in connection with application 2016/5266/P [53-55 Chalton Street].
Other full applications applications
In Camden
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2026/0743/P Granted
34-42 Middlesex House Cleveland Street London W1T 4JE
Details pursuant to Condition 6 (Living Roof) of planning permission 2024/2020/P granted on 12/09/2024 "(Minor refurbishment and rooftop works including: upgraded entrance and reception area; new cycle storage and associated end of trip facilities; new/replaced rooftop plant and plant enclosures; creation of a rooftop amenity area with pavilion structure; hard and soft rooftop landscaping; and all associated and ancillary works)."
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2026/3202/P Awaiting decision
Flat 1 94 Goldhurst Terrace London NW6 3HS
Erection of a single storey rear extension.
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2026/0335/P Granted
216A West End Lane London NW6 1UX
Conversion of 1 x 7 bedroom flat (C3) and 1 x 2 bedroom flat (C3) to 1 x 7 bedroom House in Multiple Occupation (Sui-generis) and 1 x 1 bedroom flat (C3) and installation of four rooflights
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2026/3229/P Awaiting decision
52 Neal Street London WC2H 9PA
Alterations to the shopfront and installation of awnings.
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2026/2160/P Granted
120 College Place London NW1 0DJ
Erection of a rear roof extension, formation of a rear roof terrace and installation of 2x rooflights to front roof slope, and associated works.