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Planning application

12 - 14 Harcourt Street London W1H 4HD

Awaiting decision Westminster 26/02157/FULL Full Planning Permission Application

Works: Extension

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Extension of and improvements to the existing ground floor terrace to the rear, modification to entrances, installation of security access gate, other associated external works and the installation of new signage. [Linked to 26/02158/ADV]

As published by the council, reference 26/02157/FULL

Application record

Reference
26/02157/FULL
Type
Full Planning Permission Application
Status
Pending
Received
31 Mar 2026
Validated
31 Mar 2026
Ward
Marylebone
Postcode
W1H 4HD

Site history

Applications at this address on the Westminster register

This site has had 5 applications since 2006: 2 approved, 1 refused.

  • 26/02158/ADV Awaiting decision

    12 - 14 Harcourt Street London W1H 4HD

    Display of two non-illuminated fascia signs measuring 0.31m x 1.98m and 0.46m x 3m. [Linked to 26/02157/FULL]

    Submitted 31 Mar 2026 Advertising
  • 25/08187/CLEUD Refused

    12 - 14 Harcourt Street London W1H 4HD

    Rear window at second floor; raised section of metal railings that enclose the rear roof area at the second floor; and alterations to the metal railings to install glazed panels.

    Decided 12 Mar 2026 Lawful development
  • 06/06031/ADFULL Granted

    12 - 14 Harcourt Street London W1H 4HD

    Details of rolled lead roof to approved extension pursuant to Condition 4 of planning permission dated 08 June 2006 (RN: 06/00236).

    Decided 15 Aug 2006 Full applications
  • 06/00236/FULL Granted

    12 - 14 Harcourt Street London W1H 4HD

    Extension of rear second and third floors to provide additional office space (Class B1) and creation of a terrace area to the rear and side of the first floor. Installation of three air conditioning units to the rear first floor level.

    Decided 8 Jun 2006 Full applications

Timeline

Dates from the published record

  1. 31 Mar 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 26 May 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.

Who's behind it

Company information only, from the register and Companies House

Firstplan Ltd Agent, registered in London

Active · incorporated 2003 · London

846 applications on PlanIndex · across 119 councils · 94% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

1 document on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What happens while it is decided

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.

About full applications

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.

Nearby applications

Within 0.3 miles

  • 12 - 14 Harcourt Street London W1H 4HD

    06/06031/ADFULL Submitted 28 Jul 2006 50 yards away

    Details of rolled lead roof to approved extension pursuant to Condition 4 of planning permission dated 08 June 2006 (RN: 06/00236).

    Granted Full applications Extension 2 docs

  • 12 - 14 Harcourt Street London W1H 4HD

    26/02158/ADV Submitted 31 Mar 2026 50 yards away

    82% historically approved · decision due ~26 May

    Display of two non-illuminated fascia signs measuring 0.31m x 1.98m and 0.46m x 3m. [Linked to 26/02157/FULL]

    Awaiting decision Advertising 1 doc

  • 12 - 14 Harcourt Street London W1H 4HD

    06/00236/FULL Submitted 12 Jan 2006 50 yards away

    Extension of rear second and third floors to provide additional office space (Class B1) and creation of a terrace area to the rear and side of the first floor. Installation of three air conditioning units to the rear first floor level.

    Granted Full applications Extension 11 docs

  • 12 - 14 Harcourt Street London W1H 4HD

    25/08187/CLEUD Submitted 10 Nov 2025 50 yards away

    Rear window at second floor; raised section of metal railings that enclose the rear roof area at the second floor; and alterations to the metal railings to install glazed panels.

    Refused Lawful development Windows or glazing 19 docs

  • 6 - 11 Harcourt Street London W1H 4AG

    26/02785/LBC Submitted 27 Apr 2026 50 yards away

    90% historically approved · decision due ~22 Jun

    Upgrading of Fire doors and creation of fire separating lobbies between different use classes.

    Awaiting decision Heritage and listed buildings 40 docs

  • 6 - 11 Harcourt Street London W1H 4AG

    25/09180/LBC Submitted 18 Dec 2025 50 yards away

    Internal alterations.

    Granted Heritage and listed buildings 26 docs

In Westminster

  • 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