23 Harrington Square London NW1 2JJ

This site has had 5 applications since 2011: 1 approved, 4 refused.

• 2014/4085/P Refused

  23 Harrington Square London NW1 2JJ

  Erection of single storey rear extension at ground level to residential flat.

  Decided 25 Sep 2014 Full applications
• 2013/7288/P Refused

  23 Harrington Square London NW1 2JJ

  Erection of single storey rear extension at ground level to residential flat.

  Decided 17 Mar 2014 Full applications
• 2013/7517/L Refused

  23 Harrington Square London NW1 2JJ

  Internal and external alteration associated with erection of single storey rear extension at ground floor level to residential flat.

  Decided 17 Mar 2014 Heritage and listed buildings
• 2011/4569/T Granted

  23 Harrington Square London NW1 2JJ

  REAR GARDEN: 1 x Sycamore - Reduce crown by 30%.

  Decided 20 Sep 2011 Trees

1. 25 Sep 2014

   Decision issued: Refused

2. 22 Jul 2026

   Added to PlanIndex

This application is at appeal, which passes the decision from Camden to the planning inspectorate, and the outcome will replace the council's decision. 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.

• 23 Harrington Square London NW1 2JJ

  2013/7288/P 0m away

  Erection of single storey rear extension at ground level to residential flat.

  Refused Full applications Extension
  Small domestic

• 23 Harrington Square London NW1 2JJ

  2014/4085/P 0m away

  Erection of single storey rear extension at ground level to residential flat.

  Refused Full applications Extension
  Small domestic

• Flats 3 & 4 23 Harrington Square London NW1 2JJ

  2019/5938/L 0m away

  To amalgamate Flat 3 and Flat 4 at ground and first floor levels into one flat by adding a ladder.

  Granted Heritage and listed buildings
  Domestic

• Flats 3 and 4 23 Harrington Square London NW1 2JJ

  2018/5167/L 0m away

  Internal alterations in association with amalgamation of 2 flats into 1 at ground and first floor levels

  Refused Heritage and listed buildings New dwelling
  Several homes

• 23 Harrington Square London NW1 2JJ

  2013/7517/L 0m away

  Internal and external alteration associated with erection of single storey rear extension at ground floor level to residential flat.

  Refused Heritage and listed buildings Extension
  Small domestic

• Flat 3 and Flat 4 23 Harrington Square London NW1 2JJ

  2019/1760/L Submitted 2 Apr 2019 2m away

  Installation of a step ladder to amalgamate two flats at ground and first floor levels into one flat in the closet wing.

  Refused Heritage and listed buildings New dwelling 13 docs
  Domestic

• 2026/3332/L Granted

  82 Hampstead High Street London Camden NW3 1RE

  Replacement chimney pots & chimney repairs.

  5 Aug 2026 Heritage and listed buildings
• 2026/3162/L Granted

  48 Monmouth Street London WC2H 9EP

  Repainting works to shopfront and projecting sign bracket and display of 1 x non-illuminated fascia sign and 1 x non-illuminated replacement projecting sign.

  27 Jul 2026 Heritage and listed buildings
• 2026/3964/L Awaiting decision

  3 Gainsborough Gardens London NW3 1BJ

  Reorganisation of the front garden

  14 Sep 2026 Heritage and listed buildings
• 2026/3052/L Refused

  128 St Pancras Way London NW1 9NB

  Erection of rear extension and internal alterations.

  17 Jul 2026 Heritage and listed buildings
• 2026/3142/L Granted

  The British Museum Great Russell Street London WC1B 3DG

  Installation of metal gate in place of approved replacement brick wall on northern boundary between nos. 11 Montague Street & 43 Russell Square.

  24 Jul 2026 Heritage and listed buildings