5-6 Underhill Street London NW1 7HS

This site has had 7 applications since 2018: 6 approved, 0 refused.

• 2026/1780/P Awaiting decision

  5-6 Underhill Street London NW1 7HS

  Change of use of ground floor rear office (Class E) unit to residential (Class C3) for the provision of 3no. self-contained residential units; minor alterations to fenestration at rear.

  Submitted 4 May 2026 Full applications
• 2025/2776/P Granted

  5-6 Underhill Street London NW1 7HS

  Details pursuant to Condition 5 (Ground Floor Window Details) of planning permission 2024/5382/P (dated 18/06/2025) for the 'Change of use of ground floor front office (Class E) unit to residential (Class C3) for the provision of two self-contained residential units'.

  Decided 9 Jul 2025 Full applications
• 2024/1314/P Granted

  5-6 Underhill Street London NW1 7HS

  Change of use of second floor office space (Class E) to residential (Class C3) for the provision of a new self-contained residential unit.

  Decided 11 Sep 2024 Full applications
• 2022/5582/P Granted

  5 - 6 Underhill Street London NW1 7HS

  Conversion of two office suites on the second floor (Class E) into two self-contained flats (Class C3) with ancillary amenity space, new window and PV solar panels.

  Decided 1 Dec 2023 Full applications
• 2019/0652/P Granted

  5-6 Underhill Street London NW1 7HS

  Variation to condition 3 (approved plans) of planning permission ref 2017/4332/P dated 29/08/2019 (as a variation to planning permission ref 2015/0034/P dated 10/03/2016 for extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide a self-contained flat), namely to allow an increase in height of the existing lift shaft by 0.5m, installation of a flank door on the side/rear elevation at second floor level to allow access to amended escape stairs fronting onto Underhill Street, alterations to fenestration on the front facade, and changes from a glass balustrade on the Underhill Street elevation to integral juliet balconies.

  Decided 28 Nov 2019 Amendments
• 2017/4332/P Granted

  5-6 Underhill Street LONDON NW1 7HS

  Variation to condition 3 of planning permission 2015/0034/P dated 10/03/2016, for extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide 1 x 3 bed self-contained flat (Class C3 use); namely to include increase in the height of the extension by 0.17m, increase in footprint, installation of new windows in the southwestern side elevation and alterations to the design and fenestration of the single storey extension at roof level.

  Decided 29 Aug 2018 Full applications

1. 18 Jun 2025

   Decision issued: Granted Subject to a Section 106 Legal Agreement

2. 22 Jul 2026

   Added to PlanIndex

1 later application on the register refers to this one:

• 2025/2776/P Granted

  5-6 Underhill Street London NW1 7HS

  Details pursuant to Condition 5 (Ground Floor Window Details) of planning permission 2024/5382/P (dated 18/06/2025) for the 'Change of use of ground floor front office (Class E) unit to residential (Class C3) for the provision of two self-contained residential units'.

  Decided 9 Jul 2025 Full applications

Camden granted permission on 18 June 2025, 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.

• 5-6 Underhill Street London NW1 7HS

  2026/1780/P Submitted 4 May 2026 0m away

  91% historically approved · decision due ~30 Jun

  Change of use of ground floor rear office (Class E) unit to residential (Class C3) for the provision of 3no. self-contained residential units; minor alterations to fenestration at rear.

  Awaiting decision Full applications Windows or glazing 13 docs

• 5-6 Underhill Street London NW1 7HS

  2024/1314/P 0m away

  Change of use of second floor office space (Class E) to residential (Class C3) for the provision of a new self-contained residential unit.

  Granted Full applications

• 5-6 Underhill Street London NW1 7HS

  2025/2776/P 0m away

  Details pursuant to Condition 5 (Ground Floor Window Details) of planning permission 2024/5382/P (dated 18/06/2025) for the 'Change of use of ground floor front office (Class E) unit to residential (Class C3) for the provision of two self-contained residential units'.

  Granted Full applications Windows or glazing

• 5 Underhill Street London NW1 7HS

  2015/0034/P 0m away

  Extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide 1 x 3 bed self-contained flat (Class C3 use) with external roof terrace and metal privacy screen, erection of two storey lift shaft to the rear at first and second floor level, installation of external fire escape staircase from ground to second floor level, alterations to the ground floor front elevation to create a new ground floor residential entrance and office entrance fronting Underhill Street, replacement of ground floor window openings with doors to bin store area and office storage area, and installation of roof light on the roof of the single storey front/side extension of the existing office building (Class B1 use).

  Granted Full applications Extension Loft or dormer +1
  Small domestic

• 5 - 6 Underhill Street London NW1 7HS

  2022/5582/P Submitted 20 Dec 2022 0m away

  Conversion of two office suites on the second floor (Class E) into two self-contained flats (Class C3) with ancillary amenity space, new window and PV solar panels.

  Granted Full applications New dwelling Windows or glazing 22 docs

• 5-6 Underhill Street LONDON NW1 7HS

  2017/4332/P 1m away

  Variation to condition 3 of planning permission 2015/0034/P dated 10/03/2016, for extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide 1 x 3 bed self-contained flat (Class C3 use); namely to include increase in the height of the extension by 0.17m, increase in footprint, installation of new windows in the southwestern side elevation and alterations to the design and fenestration of the single storey extension at roof level.

  Granted Full applications Extension Windows or glazing
  Small domestic

• 2026/3898/P Awaiting decision

  98 Marchmont Street London WC1N 1AG

  Installation of a new kitchen extraction and ventilation system to the rear of the premises, including associated external ductwork, extraction plant and ancillary equipment.

  Received 16 Sep, published by the council 17 Sep 2026 Full applications
• 2026/2709/P Awaiting decision

  166A Camden Street London NW1 9PT

  Change of use from Use Class E to C3 Residential, demolition of existing store and office space, and erection of a three-bedroom dwellinghouse.

  Received 16 Sep, published by the council 17 Sep 2026 Full applications
• 2026/3994/P Awaiting decision

  Euston Tower 286 Euston Road London NW1 3DP

  Details to discharge Condition 23 (LUL Subculture) of planning reference 2023/5240/P dated 26/01/26 for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, caf?? and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 2026/3993/P Awaiting decision

  Euston Tower 286 Euston Road London NW1 3DP

  Details to discharge Condition 22 (LUL Infrastructure) of planning reference 2023/5240/P dated 26/01/26 for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, caf?? and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 2026/3861/P Awaiting decision

  Beaumont Court 1-45 College Grove London NW1 0RW

  Installation of condensors and minor alterations to elevations at lower floors.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications