Chatham House 90 Heath Street London NW3 1DP

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

• 2016/2238/P Granted

  Chatham House 90 Heath Street London NW3 1DP

  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.

  Decided 5 Jul 2016 Full applications
• 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. 22 Dec 2016

   Decision issued: Granted

2. 22 Jul 2026

   Added to PlanIndex

• 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

Camden granted permission on 22 December 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.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• Chatham House 90 Heath Street London NW3 1DP

  2016/2238/P 50 yards away

  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.

  Granted Full applications 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

• 2026/1141/L Granted

  25 John Street London WC1N 2BS

  Internal and external alterations to partition layout at basement, supporting structures and external ground level, and alterations to design of conservatory, windows and doors granted under listed building consent 2024/0338/L dated 06/08/2024.

  Received 26 Mar, published by the council 24 Jul 2026 Heritage and listed buildings
• 2025/1781/L Granted

  Frognal Rise House Lower Terrace London NW3 6RE

  Demolition of existing garage and interlinking gallery and replacement with new garage and garden room with link, new basement floor below garden, alterations to main house including replacement windows including reinstated oriel window and new French doors to entrance elevation, new roofing to side wing, new portico and replacement door to front elevation, enlargement of existing lightwell, replacement gates and canopy over entrance gate, restorations of boundary treatments, associated internal alterations including partial underpinning works and other minor alterations.

  Received 22 Apr, published by the council 22 Jul 2026 Heritage and listed buildings
• 2026/4129/L Awaiting decision

  6 Leverton Street London NW5 2PJ

  Strip out kitchen including floor tiles and replace; replace plumbing and flooring in rear ensuite; replace plumbing in front ensuite and WC; replace internal doors; replace garden wall with metal railing; replace 3 rear windows, 3 rear elevation side windows, 1 rear door and 1 rear elevation side door with double-glazed crittal windows and doors; remove 2 rear windows; render rear elevation brickwork; and associated works.

  Received 1 Oct, published by the council 9 Oct 2026 Heritage and listed buildings
• 2026/1686/L Granted

  Flat Ground and 1st Floor and Flat 2nd and 3rd Floor 14 Downshire Hill London NW3 1NR

  External and internal alterations in connection with conversion of two self-contained flats into a single-family dwellinghouse, including new doors at rear ground and second floor level, replacement windows at rear second and third floors level, removal of internal partitions, extending the stair handrail, and replacement internal doors, parquet flooring, skirting, architraves, cornicing, and fittings.

  Received 19 May, published by the council 24 Jul 2026 Heritage and listed buildings
• 2026/2202/L Refused

  4 Hampstead Square London NW3 1AB

  Erection of conservatory to front elevation.

  Received 27 May, published by the council 24 Jul 2026 Heritage and listed buildings