Skip to content
PlanIndex Get alerts
Menu

Planning application

1 Marylebone Street London W1G 8JA

Awaiting decision Westminster 25/08142/FULL Full Planning Permission Application

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

Proposal

Installation of an air source heat pump within the external courtyard of the rear, lower ground floor level of the building.

As published by the council, reference 25/08142/FULL

Application record

Reference
25/08142/FULL
Type
Full Planning Permission Application
Status
Pending
Received
7 Nov 2025
Validated
7 Nov 2025
Ward
Marylebone
Postcode
W1G 8JA

Timeline

Dates from the published record

  1. 7 Nov 2025

    Received by Westminster

  2. 20 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 2 January 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.

Who's behind it

Company information only, from the register and Companies House

The Howard De Walden Estate Limited Agent

5 applications on PlanIndex

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

13 documents 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 91 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

  • 9 - 9A Marylebone High Street London W1U 4NW

    26/02440/ADV Submitted 14 Apr 2026 50 yards away

    84% historically approved · decision due ~9 Jun

    Display of a non-illuminated banner measuring 2m x 9m suspended on catenary wires at two locations along Marylebone High Street for a temporary period from 21 May 2026 to 15 June 2026.

    Awaiting decision Advertising 5 docs

  • Flat 7 Crofton House 1 New Cavendish Street London W1G 8US

    26/00794/LBC Submitted 10 Feb 2026 50 yards away

    Internal alterations including blocking up of an existing opening to accommodate two distinct bathrooms.

    Granted Heritage and listed buildings 12 docs

  • Crofton House 1 New Cavendish Street London W1G 8US

    25/07064/FULL Submitted 1 Oct 2025 50 yards away

    Refurbishment works to flat 7 the existing flat including formation of new kitchen and bathroom including removal of section of internal partition, replacing existing non-original internal doors, secondary glazing to existing windows and refurbishment of existing windows, installation of new heating system and new joinery. Installation of new insulated roof covering to existing roof(Linked to 25/07065/LBC)

    Granted Full applications Roofing Windows or glazing 25 docs

  • Crofton House 1 New Cavendish Street London W1G 8US

    25/07065/LBC Submitted 1 Oct 2025 50 yards away

    Refurbishment works to flat 7 the existing flat including formation of new kitchen and bathroom including removal of section of internal partition, replacing existing non-original internal doors, secondary glazing to existing windows and refurbishment of existing windows, installation of new heating system and new joinery. Installation of new insulated roof covering to existing roof. (Linked to 25/07064/FULL)

    Granted Heritage and listed buildings Roofing Windows or glazing 20 docs

  • Basement And Ground Floor 10 Marylebone High Street London W1U 4BT

    26/05495/ADV Submitted 12 Aug 2026 50 yards away

    84% historically approved · decision due ~7 Oct

    Display of non-illuminated fascia sign measuring 0.18m x 0.90m; non-illuminated hanging sign measuring 0.40m x 0.60m; and glass mounted sign measuring 0.18m x 0.90m. (Linked with 26/05494/FULL)

    Decided Advertising

  • Basement And Ground Floor 10 Marylebone High Street London W1U 4BT

    26/05494/FULL Submitted 12 Aug 2026 50 yards away

    87% historically approved · decision due ~7 Oct

    Repainting of the shopfront. (Linked with 26/05495/ADV)

    Awaiting decision Full applications Windows or glazing

In Westminster

  • 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
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising replacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06294/FULL Awaiting decision

    15 Eaton Mews South London SW1W 9HP

    Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06317/FULL Awaiting decision

    124 Hamilton Terrace London NW8 9UT

    Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06318/LBC)

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06273/FULL Awaiting decision

    9A Grosvenor Square London W1K 5AE

    Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

    Received 14 Sep, published by the council 22 Sep 2026 Full applications