Chatham House 90 Heath Street London NW3 1DP

This site has had 5 applications since 2010: 5 approved, 0 refused.

• 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.

  Decided 22 Dec 2016 Heritage and listed buildings
• 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.

  Decided 5 Jul 2016 Heritage and listed buildings
• 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).

  Decided 23 Sep 2010 Full applications
• 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).

  Decided 23 Sep 2010 Heritage and listed buildings

1. 5 Jul 2016

   Decision issued: Granted

2. 22 Jul 2026

   Added to PlanIndex

Camden granted permission on 5 July 2016, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Chatham House 90 Heath Street London NW3 1DP

  2016/6118/L 50 yards away

  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.

  Granted Heritage and listed buildings Extension Loft or dormer +1

• 90 Chatham House Heath Street London NW3 1DP

  2010/2487/L 50 yards away

  Internal alteration to include the creation of an opening between underground center and north vault at front of dwelling (Class C3).

  Granted Heritage and listed buildings
  Domestic

• Chatham House 90 Heath Street London NW3 1DP

  2010/2881/P 50 yards away

  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).

  Granted Full applications Extension Loft or dormer
  Small domestic

• Chatham House 90 Heath Street London NW3 1DP

  2016/2478/L 50 yards away

  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.

  Granted Heritage and listed buildings Extension Loft or dormer +1

• Chatham House 90 Heath Street London NW3 1DP

  2010/2894/L 50 yards away

  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).

  Granted Heritage and listed buildings Extension Loft or dormer +1
  Small domestic

• 90 Chatham House Heath Street London NW3 1DP

  2010/0457/L 50 yards away

  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).

  Withdrawn Heritage and listed buildings Extension Loft or dormer
  Domestic

• 2026/0369/P Granted

  Railway embankment and land west of 49 Adelaide Road London NW3 3QB

  Installation of a new DNO (Distribution Network Operator) cabinet and erection secure access gate to Adelaide Road, erection of staircase to railway embankment, associated works.

  Received 17 Jul, published by the council 24 Jul 2026 Full applications
• 2026/3694/P Granted

  19 Charterhouse Street London EC1N 6RA

  Details pursuant to condition 19 (external lighting) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

  Received 27 Aug, published by the council 5 Sep 2026 Full applications
• 2026/3904/P Granted

  14 Templewood Avenue London NW3 7XA

  Details pursuant to Condition 5 (Tree protection measures) of planning permission 2026/2315/P dated 10/08/2026 for "Erection of an orangery/outbuilding in the rear garden."

  Received 9 Sep, published by the council 11 Sep 2026 Full applications
• 2025/2002/P Granted

  11 Doughty Street London WC1N 2PL

  Change of use from office (Class E) to residential to form a single-family dwelling (Class C3); associated internal and external alterations

  Received 9 May, published by the council 22 Jul 2026 Full applications
• 2026/3551/P Granted

  19 Charterhouse Street London EC1N 6RA

  Details pursuant to condition 21 (Details of gates/barriers onto Charterhouse Street) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

  Received 19 Aug, published by the council 22 Aug 2026 Full applications