51 Harrowby Street London W1H 5EF

This site has had 3 applications since 2026.

• 26/05686/LBC Awaiting decision

  51 Harrowby Street London W1H 5EF

  Replacement of two first floor Balconette style Balconies on the front facade of the building matching the ornate design of the balconies on the adjoining property.

  Submitted 19 Aug 2026 Heritage and listed buildings
• 26/00097/LBC Awaiting decision

  51 Harrowby Street London W1H 5EF

  Replacement of existing iron railings to the front boundary and painting of front elevation. (Linked to 26/00907/FULL)

  Submitted 8 Jan 2026 Heritage and listed buildings

1. 13 Feb 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 10 April 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 66 days over the applications it decided in the last year.

• 26/00097/LBC Awaiting decision

  51 Harrowby Street London W1H 5EF

  Replacement of existing iron railings to the front boundary and painting of front elevation. (Linked to 26/00907/FULL)

  Submitted 8 Jan 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 26/00097/LBC Awaiting decision

  51 Harrowby Street London W1H 5EF

  Replacement of existing iron railings to the front boundary and painting of front elevation. (Linked to 26/00907/FULL)

  Submitted 8 Jan 2026 Heritage and listed buildings

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 91 days. More in our guide to how long planning decisions take.

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.

• 51 Harrowby Street London W1H 5EF

  26/05686/LBC Submitted 19 Aug 2026 50 yards away

  90% historically approved · decision due ~14 Oct

  Replacement of two first floor Balconette style Balconies on the front facade of the building matching the ornate design of the balconies on the adjoining property.

  Awaiting decision Heritage and listed buildings

• 51 Harrowby Street London W1H 5EF

  26/00097/LBC Submitted 8 Jan 2026 50 yards away

  90% historically approved · decision due ~10 Apr

  Replacement of existing iron railings to the front boundary and painting of front elevation. (Linked to 26/00907/FULL)

  Awaiting decision Heritage and listed buildings 14 docs

• Studio Cottage 22 Cato Street London W1H 5JG

  10/06962/CAC Submitted 11 Aug 2010 50 yards away

  Demolition of part of the existing building.

  Withdrawn Heritage and listed buildings Demolition 4 docs

• Richbourne Court 9 Harrowby Street London W1H 5PT

  07/00778/FULL Submitted 23 Jan 2007 50 yards away

  Installation of rising arm barriers, additional railings and creation of new parking spaces.

  Withdrawn Full applications 7 docs

• Richbourne Court 9 Harrowby Street London W1H 5PT

  08/00792/FULL Submitted 21 Jan 2008 50 yards away

  Installation of rising arm barrier and additional railings along with creation of new parking spaces.

  Granted Full applications 9 docs

• 18 Molyneux Street London W1H 5HN

  25/06555/ADLBC Submitted 12 Sep 2025 50 yards away

  Details of the cleaning of the external elevations pursuant to Condition 4 (i) of Listed Building Consent dated 29 July 2025 (RN25/03923/LBC)

  Granted Conditions 8 docs

• 26/06331/FULL Awaiting decision

  31G Nottingham Place London W1U 5LP

  Installation of a condenser within acoustic enclosure and metal railing on the rear flat roof at third-floor level.

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06328/FULL Awaiting decision

  Athena Court 2 Finchley Road London NW8 6DP

  Installation of a multifunctional communication Hub including defibrillator outside Athena Court. (Linked with 26/06329/ADV)

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06340/FULL Awaiting decision

  141 Harley Street London W1G 6BQ

  Variation of Condition 1 of planning permission dated 22 December 2026 (RN: 16/05372/FULL) for: Demolition of mews buildings at 28 and 29 Devonshire Mews West and lower ground and ground floor link building at the rear of 141 Harley Street and the erection of new building to include a three storey basement to the rear of the site in connection with the use of the 141 Harley Street and the lower ground and ground floor of 143 Harley Street for Class D1 medical purposes; installation of a new passenger lift to the rear of 141 Harley Street and installation of plant. (Site includes excavation part way under the pavement of Devonshire Mews West and use swap with 126 Harley Street) namely, to allow creation of party wall openings at basement, ground and first floors; insertion of a platform lift within No. 143 from basement to first floors; partial infilling of the rear basement area; and other minor adjustments to plan form. (Linked with 26/06290/LBC)

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06341/FULL Awaiting decision

  141 Harley Street London W1G 6BQ

  Installation of new sesame lift into existing front entrance steps. (Linked with 26/06342/LBC)

  Received 16 Sep, published by the council 23 Sep 2026 Full applications
• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront with Medication Dispensing Outlet.

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