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Planning application

45 William Mews London SW1X 9HQ

Awaiting decision Westminster 25/08053/CLOPUD Certificate of Lawfulness (proposed)

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

Replacement of existing single glazed windows and doors with double glazed timber windows and doors.

As published by the council, reference 25/08053/CLOPUD

Application record

Reference
25/08053/CLOPUD
Type
Certificate of Lawfulness (proposed)
Status
Pending
Received
5 Nov 2025
Validated
5 Nov 2025
Ward
Knightsbridge & Belgravia
Postcode
SW1X 9HQ

Timeline

Dates from the published record

  1. 5 Nov 2025

    Received by Westminster

  2. 20 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 31 December 2025, 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

Robin Ashley Architects LLP Agent, an architecture practice registered in Sheffield

Active · incorporated 2004 · Sheffield

11 applications on PlanIndex · across 8 councils

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

7 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 lawful development applications in a median of 78 days. More in our guide to how long planning decisions take.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

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In Westminster

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    Received 7 Sep, published by the council 14 Sep 2026 Lawful development
  • 26/06044/CLOPUD Awaiting decision

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    Received 3 Sep, published by the council 11 Sep 2026 Lawful development
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    Received 3 Sep, published by the council 11 Sep 2026 Lawful development
  • 26/05871/CLEUD Awaiting decision

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