20 Bloomsbury Square London WC1A 2NS

This site has had 2 applications since 2010: 2 approved, 0 refused.

• 2010/5355/P Granted

  20 Bloomsbury Square London WC1A 2NS

  Replacement of rear basement boiler room with a retaining wall and grille over and installation of condenser units, alterations to fenestration at rear ground and second floor levels, installation of two rooflights in rear extension, replacement of existing second floor half width extension with new, and installation of a roof light and solar photo voltaic panels in the main roof to existing office building (Class B1)

  Decided 8 Dec 2010 Full applications

1. 8 Dec 2010

   Decision issued: Granted

2. 22 Jul 2026

   Added to PlanIndex

Camden granted permission on 8 December 2010, 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.

• 20 Bloomsbury Square London WC1A 2NS

  2010/5355/P 50 yards away

  Replacement of rear basement boiler room with a retaining wall and grille over and installation of condenser units, alterations to fenestration at rear ground and second floor levels, installation of two rooflights in rear extension, replacement of existing second floor half width extension with new, and installation of a roof light and solar photo voltaic panels in the main roof to existing office building (Class B1)

  Granted Full applications Extension Loft or dormer +1

• 21 Bloomsbury Square London WC1A 2NS

  2022/1984/T 50 yards away

  REAR GARDEN: 1 x Tree of Heaven (Ailanthius altissima) (T1) - Fell to ground level.

  Granted Trees

• 21 Bloomsbury Square London WC1A 2NS

  2011/0841/P 50 yards away

  Installation of an external condenser unit within the rear basement lightwell to the offices (Class B1).

  Granted Full applications

• 21 Bloomsbury Square London WC1A 2NS

  2011/0843/L 50 yards away

  Installation of an external condenser unit within the rear basement lightwell and internal alterations including installation of 18 indoor heating units and associated works.

  Granted Heritage and listed buildings

• 21 Bloomsbury Square London WC1A 2NS

  2022/2093/T 50 yards away

  REAR GARDEN: 1 x Holly (Ilex aquifolium) (T1) - Reshape and rebalance crown by reducing height by up to 3m and lower lateral branches by 1m - 2m to form smaller, rounded crown.

  Granted Trees

• 21-22 Bloomsbury Square London WC1A 2NS

  2023/1467/L 50 yards away

  Installation of telecommunications cabling at lower ground floor level.

  Granted Heritage and listed buildings

• 2026/3332/L Granted

  82 Hampstead High Street London Camden NW3 1RE

  Replacement chimney pots & chimney repairs.

  Received 5 Aug, published by the council 15 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.

  Received 27 Jul, published by the council 2 Aug 2026 Heritage and listed buildings
• 2026/3964/L Awaiting decision

  3 Gainsborough Gardens London NW3 1BJ

  Reorganisation of the front garden

  Received 14 Sep, published by the council 17 Sep 2026 Heritage and listed buildings
• 2026/3052/L Refused

  128 St Pancras Way London NW1 9NB

  Erection of rear extension and internal alterations.

  Received 17 Jul, published by the council 28 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.

  Received 24 Jul, published by the council 15 Aug 2026 Heritage and listed buildings