18 TRIAD HOUSE HANWAY STREET LONDON W1T 1UF

1. 28 Dec 2012

   Decision issued: Granted Subject to a Section 106 Legal Agreement

2. 22 Jul 2026

   Added to PlanIndex

2 later applications on the register refer to this one:

• 2013/5250/P Granted

  Triad House 18 Hanway Street London W1T 1UF

  Details pursuant to condition 6 (green roof) of planning permission dated 28/12/2012 (Ref: 2011/5439/P) for erection of roof extension and change of use of part lower ground/ground floor and entire first, second and third floor from offices (Class B1) to residential (Class C3)

  Decided 5 Sep 2013 Full applications
• 2013/0627/P Granted

  Triad House 18 Hanway Street London W1T 1UF

  Details pursant to condition 5 (cycle storage) of planning permission dated 28/12/12 (Ref:2011/5439/P) for the erection of roof extension and change of use of part lower ground/ground floor and entire first, second and third floor from offices (Class B1) to residential (Class C3) to provide 3 x 1-bedroom and 2 x studio intermediate units and 1 x 3-bedroom market housing unit.

  Decided 8 Apr 2013 Full applications

Camden granted permission on 28 December 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.

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.

• Triad House 18 Hanway Street London W1T 1UF

  2013/5250/P 50 yards away

  Details pursuant to condition 6 (green roof) of planning permission dated 28/12/2012 (Ref: 2011/5439/P) for erection of roof extension and change of use of part lower ground/ground floor and entire first, second and third floor from offices (Class B1) to residential (Class C3)

  Granted Full applications Extension

• Triad House 18 Hanway Street London W1T 1UF

  2013/0627/P 50 yards away

  Details pursant to condition 5 (cycle storage) of planning permission dated 28/12/12 (Ref:2011/5439/P) for the erection of roof extension and change of use of part lower ground/ground floor and entire first, second and third floor from offices (Class B1) to residential (Class C3) to provide 3 x 1-bedroom and 2 x studio intermediate units and 1 x 3-bedroom market housing unit.

  Granted Full applications Extension

• 18 Hanway Street London W1T 1UF

  2020/3609/P 50 yards away

  Replacement of front door and removal of front step.

  Granted Full applications

• Triad House 18 Hanway Street London W1T 1UF

  2013/5825/P 50 yards away

  Erection of mansard roof extension and change of use of the first, second and third floors from offices (Class B1) to residential (Class C3) to provide 5x1 bedroom flats and 1x3 bed flat.

  Refused Full applications New dwelling Extension +1

• 8/10 Hanway Place London W1T 1HD

  2011/2435/P 50 yards away

  Change of use from offices (Class B1) to restaurant use (Class A3) at ground floor level to provide staff facilities in connection with the existing restaurant at 7-12 Hanway Place.

  Granted Full applications

• 1st Floor Rear 20 Hanway Street London W1T 1UG

  2019/6184/P 50 yards away

  External alterations including erection of roof extension with 5 x roof windows and a lightwell, associated with change of use from ancillary A1 space to residential C3 to create a new 2 bed flat.

  Granted Full applications Extension Windows or glazing

• 2026/0369/P Granted

  Railway embankment and land west of 49 Adelaide Road London NW3 3QB

  Installation of a new DNO (Distribution Network Operator) cabinet and erection secure access gate to Adelaide Road, erection of staircase to railway embankment, associated works.

  Received 17 Jul, published by the council 24 Jul 2026 Full applications
• 2026/3694/P Granted

  19 Charterhouse Street London EC1N 6RA

  Details pursuant to condition 19 (external lighting) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

  Received 27 Aug, published by the council 5 Sep 2026 Full applications
• 2026/3904/P Granted

  14 Templewood Avenue London NW3 7XA

  Details pursuant to Condition 5 (Tree protection measures) of planning permission 2026/2315/P dated 10/08/2026 for "Erection of an orangery/outbuilding in the rear garden."

  Received 9 Sep, published by the council 11 Sep 2026 Full applications
• 2025/2002/P Granted

  11 Doughty Street London WC1N 2PL

  Change of use from office (Class E) to residential to form a single-family dwelling (Class C3); associated internal and external alterations

  Received 9 May, published by the council 22 Jul 2026 Full applications
• 2026/3551/P Granted

  19 Charterhouse Street London EC1N 6RA

  Details pursuant to condition 21 (Details of gates/barriers onto Charterhouse Street) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.

  Received 19 Aug, published by the council 22 Aug 2026 Full applications