Planning application
2016/2238/P
Chatham House 90 Heath Street London NW3 1DP
Proposal
Replacement rear conservatory, insertion of first floor rear sash window, insertion x2 rear roof lights, replace rear timber sash windows and replace the front lightwell timber staircase with a metal stair case.
As published by the council, reference 2016/2238/P
Timeline
Dates from the published record
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5 Jul 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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2016/6118/L Granted
Chatham House 90 Heath Street London NW3 1DP
Discharge of condition 4 (detailed drawings and samples as appropriate) granted under reference 2016/2478/l dated 05/07/16 for replacement rear conservatory, insertion of first floor rear sash window, insertion x 2 rear roof lights, replacement timber sash window on rear closet wing, enlargement of openings to lower ground floor internal walls; spiral stair case to loft space; reinstatement of window joinery and bricking of side facing windows on rear elevation and replace the front lightwell timber staircase with metal affecting a Grade II Listed Building.
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2010/2487/L Granted
90 Chatham House Heath Street London NW3 1DP
Internal alteration to include the creation of an opening between underground center and north vault at front of dwelling (Class C3).
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2010/2881/P Granted
Chatham House 90 Heath Street London NW3 1DP
Erection of single storey conservatory extension at rear lower ground floor level; alterations to side elevation rear, new rooflights to rear roofslope of dwelling house (Class C3).
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2016/2478/L Granted
Chatham House 90 Heath Street London NW3 1DP
Replacement rear conservatory, insertion of first floor rear sash window, insertion x2 rear roof lights, replacement timber sash window on rear closet wing, enlargement of openings to lower ground floor internal walls; spiral stair case to loft space; reinstatement of window joinery and bricking of side facing windows on rear elevation and replace the front lightwell timber staircase with metal.
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2010/2894/L Granted
Chatham House 90 Heath Street London NW3 1DP
Works in association with erection of single conservatory extension at rear lower ground floor level; alterations to side elevation rear, window at ground floor level to be relocated into new opening to rear elevation, and installation of two rooflights to rear slope roof of dwelling house (Class C3).
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2010/0457/L Withdrawn
90 Chatham House Heath Street London NW3 1DP
Internal and external works in association with erection of lower ground and ground floor extensions to rear, two heritage / conservation rooflights to rear roofslope to existing dwelling house (Class C3).
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.