90 Heath Street London NW3 1DP

This site has had 2 applications since 2012: 2 approved, 0 refused.

• 2012/3445/P Granted

  90 Heath Street London NW3 1DP

  Variation of condition 3 (development to be carried out in accordance with the approved plans) pursuant to planning permission 2010/4826/P (decided 02/12/2010 for Erection of single storey conservatory extension at rear lower ground floor level; alterations to side elevation rear, new roof rooflights to rear slope roof to dwelling house) to allow for minor amendment to include part mono-pitched glass roof with part solid flat roof; timber framed glazed double doors and a window to the rear elevation; floor level of the conservatory to be lower that the existing main lower ground floor level such that the two flank windows would remain as existing, and omission of new window opening at 1st floor level rear elevation of existing house (Class C3).

  Decided 31 Aug 2012 Full applications

1. 31 Aug 2012

   Decision issued: Granted

2. 22 Jul 2026

   Added to PlanIndex

Camden granted permission on 31 August 2012, 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 0m 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

• Chatham House 90 Heath Street London NW3 1DP

  2016/6118/L 0m 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 0m 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 0m 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 0m 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 0m 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

• 2026/0825/L Granted

  88 Frognal London NW3 6XB

  Discharge of condition 4 (a) Plan, elevation and section drawings of all new internal doors at a scale of 1:10 with typical moulding and architrave details at a scale of 1:1. b) Plan, elevation and section drawings, including jambs, head and cill, of all new windows and doors, including garage doors and windows, at a scale of 1:10 with typical glazing bar details at 1:1) of 2025/3436/L (External works comprising demolition of existing conservatory and erection of single-storey ground floor extension; demolition of existing garage and erection of replacement garage; alterations and repairs to roof; repair and minor alterations to building facade; provision of new hard and soft landscaping. Interior works comprising general remodelling works; minor changes to planform and openings; installation of new mechanical and electrical services throughout)

  2 Mar 2026 Heritage and listed buildings
• 2026/2946/L Awaiting decision

  Flat 1, 73 Eton Avenue London NW3 3EU

  Replacement of existing defective rear lean-to conservatory with a new slimline powder-coated aluminium framed conservatory with clear double glazing, on the exact same footprint as existing.

  3 Sep 2026 Heritage and listed buildings
• 2026/3754/L Awaiting decision

  10 Great Ormond Street London Camden WC1N 3RB

  Coversion of 3 flats into 4 and internal alterations to the listed building

  2 Sep 2026 Heritage and listed buildings
• 2026/2194/L Withdrawn

  Dunboyne Road Estate Dunboyne Road London NW3 2YY

  Installation of Air Source and Water Source Heat Pumps in basement car park with associated acoustic and security enclosures; installation of PV Panels on roof of Blocks 1, 2 and 3; removal of existing gas boilers and associated plant; installation of a new estate-wide heating network including Heat Interface Units, radiators, pipework and associated infrastructure to serve Flats 1-71; excavation of trenches and installation of below-ground heating, water and electrical infrastructure; and associated ancillary works.

  29 May 2026 Heritage and listed buildings
• 2026/3773/L Awaiting decision

  47 Kelly Street London NW1 8PG

  Replacement of concrete roof tiles with slate roof tiles (Retrospective)

  28 Aug 2026 Heritage and listed buildings