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 91 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 119 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

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications