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Planning application

16 Beaumont Mews London W1G 6EJ

Granted Westminster 25/07149/FULL Full Planning Permission Application

Works: Loft or dormer Demolition Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Variation of Conditions 1 of planning permission dated 19th February 2025 (RN: 24/03039/FULL) for, 'Excavation of single storey basement and the demolition and replacement of the mews building with an additional mansard storey to provide additional residential floorspace including the installation of an air source heat pump at roof level (Class C3)'; NAMELY, to allow the retention of the garage space together with associated amendments to the internal layout and external openings; omission of approved lightwell from the ground to basement level; alterations to fenestration to the front and rear elevations, and relocation of roof level plant. (Application under Section 73 of the Act).

As published by the council, reference 25/07149/FULL

Application record

Reference
25/07149/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
3 Oct 2025
Validated
23 Oct 2025
Decided
9 Apr 2026
Ward
Marylebone
Decision by
Delegated Decision
Postcode
W1G 6EJ

Site history

Applications at this address on the Westminster register

This site has had 6 applications since 2025: 2 approved, 0 refused.

  • 26/03805/ADFULL Decided

    16 Beaumont Mews London W1G 6EJ

    Details of new windows and doors; facing materials; plant screen; and sample of the glass intended for the rear elevation pursuant to Conditions 7, 8, 9 and 13 of planning permission dated 09 April 2026 (RN: 25/07149/FULL)

    Decided 5 Aug 2026
  • 26/03548/FULL Awaiting decision

    16 Beaumont Mews London W1G 6EJ

    Variation of Condition 1 (approved plans) and Condition 2 (Code of Construction Practice) of planning permission 24/03039/FULL dated 19th February 2025 for the 'Excavation of single storey basement and demolition and replacement of the mews building with an additional mansard storey to provide additional residential floorspace including the installation of an air source heat pump at roof level (Class C3)'; namely to allow the development to be carried out in two phases and to secure the submission and approval of the Code of Construction Practice on a phase-specific basis. (Application under Section 73 of the Act).

    Submitted 29 May 2026 Full applications
  • 25/07662/ADFULL Granted

    16 Beaumont Mews London W1G 6EJ

    Details of a supplementary acoustic report pursuant to condition 12 of planning permission dated 19th February 2025 (RN 24/03039/FULL)

    Decided 23 Feb 2026 Full applications
  • 25/07157/NMA Withdrawn

    16 Beaumont Mews London W1G 6EJ

    Amendments to planning permission dated 19 February 2025 (RN:24/03039/FULL) for excavation of single storey basement and the demolition and replacement of the mews building with an additional mansard storey to provide additional residential floorspace including the installation of an air source heat pump at roof level (Class C3). namely, to allow the addition of a condition to the addtiona of a condition allwoing the development to be carried in two phase. for the approved development to be implemented in two phases, with the basement construction deferred to a later stage.

    Decided 22 May 2026 Amendments
  • 25/05859/FULL Awaiting decision

    16 Beaumont Mews London W1G 6EJ

    Variation of conditions 1 and 13 of planning permission 19 February 2025 (RN: 24/03039/FULL) for the: 'Excavation of single storey basement and the demolition and replacement of the mews building with an additional mansard storey to provide additional residential floorspace including the installation of an air source heat pump at roof level (Class C3)'. Namely, to allow openable side hung windows instead of fixed-shut to the rear (Application under S73 of the Act).

    Submitted 19 Aug 2025 Full applications

Timeline

Dates from the published record

  1. 3 Oct 2025

    Received by Westminster

  2. 23 Oct 2025

    Validated

    Checked as complete and ready for consideration.

  3. 9 Apr 2026

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/03805/ADFULL Decided

    16 Beaumont Mews London W1G 6EJ

    Details of new windows and doors; facing materials; plant screen; and sample of the glass intended for the rear elevation pursuant to Conditions 7, 8, 9 and 13 of planning permission dated 09 April 2026 (RN: 25/07149/FULL)

    Decided 5 Aug 2026

Who's behind it

Company information only, from the register and Companies House

PSA Studio Ltd Agent, registered in Loughton

Active · incorporated 2013 · Loughton

10 applications on PlanIndex · across 2 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

27 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 this grant of permission means

Westminster granted permission on 9 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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

  • 16 Beaumont Mews London W1G 6EJ

    25/05859/FULL Submitted 19 Aug 2025 50 yards away

    87% historically approved · decision due ~14 Oct

    Variation of conditions 1 and 13 of planning permission 19 February 2025 (RN: 24/03039/FULL) for the: 'Excavation of single storey basement and the demolition and replacement of the mews building with an additional mansard storey to provide additional residential floorspace including the installation of an air source heat pump at roof level (Class C3)'. Namely, to allow openable side hung windows instead of fixed-shut to the rear (Application under S73 of the Act).

    Awaiting decision Full applications Loft or dormer Demolition +1 7 docs
    Small domestic

  • 16 Beaumont Mews London W1G 6EJ

    26/03548/FULL Submitted 29 May 2026 50 yards away

    87% historically approved · decision due ~24 Jul

    Variation of Condition 1 (approved plans) and Condition 2 (Code of Construction Practice) of planning permission 24/03039/FULL dated 19th February 2025 for the 'Excavation of single storey basement and demolition and replacement of the mews building with an additional mansard storey to provide additional residential floorspace including the installation of an air source heat pump at roof level (Class C3)'; namely to allow the development to be carried out in two phases and to secure the submission and approval of the Code of Construction Practice on a phase-specific basis. (Application under Section 73 of the Act).

    Awaiting decision Full applications Loft or dormer Demolition 10 docs
    Small domestic

  • 16 Beaumont Mews London W1G 6EJ

    25/07157/NMA Submitted 3 Oct 2025 50 yards away

    Amendments to planning permission dated 19 February 2025 (RN:24/03039/FULL) for excavation of single storey basement and the demolition and replacement of the mews building with an additional mansard storey to provide additional residential floorspace including the installation of an air source heat pump at roof level (Class C3). namely, to allow the addition of a condition to the addtiona of a condition allwoing the development to be carried in two phase. for the approved development to be implemented in two phases, with the basement construction deferred to a later stage.

    Withdrawn Amendments Loft or dormer Demolition 7 docs
    Small domestic

  • 16 Beaumont Mews London W1G 6EJ

    25/07662/ADFULL Submitted 22 Oct 2025 50 yards away

    Details of a supplementary acoustic report pursuant to condition 12 of planning permission dated 19th February 2025 (RN 24/03039/FULL)

    Granted Full applications 8 docs

  • 16 Beaumont Mews London W1G 6EJ

    26/03805/ADFULL Submitted 10 Jun 2026 50 yards away

    Details of new windows and doors; facing materials; plant screen; and sample of the glass intended for the rear elevation pursuant to Conditions 7, 8, 9 and 13 of planning permission dated 09 April 2026 (RN: 25/07149/FULL)

    Decided Windows or glazing

  • 33 - 34 Devonshire Street London W1G 6PY

    24/04424/AD7 Submitted 1 Jul 2024 50 yards away

    84% historically approved · decision due ~26 Aug

    Display for a temporary period of six months of a non-illuminated estate agent's board measuring 0.6m x 0.45m (Renewal Notice)

    Awaiting decision Advertising 6 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront.

    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 repolacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06234/FULL Awaiting decision

    40 Grosvenor Place London SW1X 7HJ

    Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

    Received 11 Sep, published by the council 18 Sep 2026 Full applications
  • 26/06249/FULL Awaiting decision

    53 Wimpole Street London W1G 8YH

    Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)

    Received 11 Sep, published by the council 18 Sep 2026 Full applications
  • 26/03576/FULL Decided

    15A Devonshire Terrace London W2 3DW

    Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

    Received 1 Jun, published by the council 11 Sep 2026 Full applications