Planning application
2025/1398/P
243 Royal College Street London NW1 9LT
Proposal
Erection of mansard roof extension.
As published by the council, reference 2025/1398/P
Timeline
Dates from the published record
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4 Jun 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 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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2026/2364/P Awaiting decision
Lemongrass 243 Royal College Street London NW1 9LT
Change of use of basement (currently linked to ground floor restaurant) to a one bedroom self-contained flat
-
2012/4462/P Granted
Top floor flat 245 Royal College Street London NW1 9LT
Erection of a mansard roof extension with the installation of 2 x dormers to both front and rear elevations of existing top floor flat.
-
2010/3253/P Withdrawn
245 Royal College Street London NW1 9LT
Erection of first and second floor rear extensions in association with the conversion of offices (Class B1) into one x two bedroom maisonette and two x one bedroom flats.
-
2015/7111/P Granted
Flat 3 (Upper Floor), 245 Royal College Street, London, NW1 9LT.
Mansard roof extension with the installation of 2 x dormers to both front and rear elevations of top floor flat [renewal of previous approval 2012/4462/P]
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2016/3479/P Granted
Flat 1 (Lower Ground and Ground Floor) 245 Royal College Street London NW1 9LT
Alterations to front lightwell, including retention of railing and installation of 3 domed skylights (Class C3).
-
2010/6105/P Granted
245 Royal College Street London NW1 9LT
Conversion from single family dwelling house to 3 x self-contained flats (Class C3), erection of a two storey rear extension at first and second floors, and alterations to front elevation including new window at ground floor level and covering of lightwell.
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.
-
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.