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Planning application

Flat 4 St Davids House 16 New Cavendish Street London W1G 8UP

Awaiting decision Westminster 26/01855/FULL Full Planning Permission Application

Works: Loft or dormer

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

Proposal

Alterations to the uppermost storey of Flat 4, involving the removal of two existing rear dormers and the construction of a single replacement rear dormer, like-for-like replacement of existing roof terrace railings and decking, and internal alterations including the replacement of existing modern kitchen fittings and associated joinery. (Linked to 26/01857/LBC)

As published by the council, reference 26/01855/FULL

Application record

Reference
26/01855/FULL
Type
Full Planning Permission Application
Status
Pending
Received
23 Mar 2026
Validated
23 Mar 2026
Ward
Marylebone
Postcode
W1G 8UP

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2026.

  • 26/01857/LBC Awaiting decision

    Flat 4 St Davids House 16 New Cavendish Street London W1G 8UP

    Alterations to the uppermost storey of Flat 4, involving the removal of two existing rear dormers and the construction of a single replacement rear dormer, like-for-like replacement of existing roof terrace railings and decking, and internal alterations including the replacement of existing modern kitchen fittings and associated joinery. (Linked to 26/01855/FULL)

    Submitted 23 Mar 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 23 Mar 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 18 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

Bonnystreet (Town) Planning Limited Agent, a planning consultancy

22 applications on PlanIndex · across 11 councils · 79% granted

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See their track record

Documents

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

17 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.

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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

  • Flat 2 St Davids House 16 New Cavendish Street London W1G 8UP

    26/04613/ADLBC Submitted 10 Jul 2026 50 yards away

    89% historically approved · decision due ~4 Sep

    Details of panelled timber doors, reflected ceiling plans, and sections, pursuant to conditions 3 and 4 of listed building consent dated 16 June 2026 (RN: 26/03520/LBC)

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  • Flat 4 St Davids House 16 New Cavendish Street London W1G 8UP

    26/01857/LBC Submitted 23 Mar 2026 50 yards away

    90% historically approved · decision due ~18 May

    Alterations to the uppermost storey of Flat 4, involving the removal of two existing rear dormers and the construction of a single replacement rear dormer, like-for-like replacement of existing roof terrace railings and decking, and internal alterations including the replacement of existing modern kitchen fittings and associated joinery. (Linked to 26/01855/FULL)

    Awaiting decision Heritage and listed buildings Loft or dormer 16 docs

  • Flat 2 St Davids House 16 New Cavendish Street London W1G 8UP

    26/03520/LBC Submitted 28 May 2026 50 yards away

    90% historically approved · decision due ~23 Jul

    Internal refurbishment and refit of second floor flat; installation of external boiler flue to rear.

    Awaiting decision Heritage and listed buildings 11 docs

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  • 11 Cross Keys Close London W1U 2DG

    05/01486/FULL Submitted 28 Feb 2005 50 yards away

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    Received 4 Nov, published by the council 6 Nov 2026 Full applications
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    Received 3 Nov, published by the council 6 Nov 2026 Full applications