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Planning application

Flat 4b Block 4 Portman Mansions Chiltern Street London W1U 6NS

Awaiting decision Westminster 26/01860/FULL Full Planning Permission Application

Works: Windows or glazing

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

Proposal

Like for like replacement of nine windows at lower ground floor level.

As published by the council, reference 26/01860/FULL

Application record

Reference
26/01860/FULL
Type
Full Planning Permission Application
Status
Pending
Received
23 Mar 2026
Validated
7 Apr 2026
Ward
Marylebone
Postcode
W1U 6NS

Timeline

Dates from the published record

  1. 23 Mar 2026

    Received by Westminster

  2. 7 Apr 2026

    Validated

    Checked as complete and ready for consideration.

  3. 21 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 2 June 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 65 days over the applications it decided in the last year.

Documents

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

11 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.

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  • 26/06269/FULL Awaiting decision

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