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Planning application

Ellerton House 11 Bryanston Square London W1H 2DQ

Granted Westminster 25/07173/FULL Full Planning Permission Application

Relates to 25/07174/LBC

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

Proposal

Replacement of the existing timber pergola over the rear terrace with new. Linked with 25/07174/LBC (Retrospective)

As published by the council, reference 25/07173/FULL

Application record

Reference
25/07173/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
6 Oct 2025
Validated
6 Oct 2025
Decided
13 Nov 2025
Ward
Marylebone
Decision by
Delegated Decision
Postcode
W1H 2DQ

Site history

Applications at this address on the Westminster register

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

  • 25/07174/LBC Granted

    Ellerton House 11 Bryanston Square London W1H 2DQ

    Replacement of the existing timber pergola over the rear terrace with new. Linked with 25/07173/FULL (Retrospective)

    Decided 13 Nov 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 6 Oct 2025

    Received by Westminster

  2. 13 Nov 2025

    Decision issued: Application Permitted

  3. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/07174/LBC Granted

    Ellerton House 11 Bryanston Square London W1H 2DQ

    Replacement of the existing timber pergola over the rear terrace with new. Linked with 25/07173/FULL (Retrospective)

    Decided 13 Nov 2025 Heritage and listed buildings

1 later application on the register refers to this one:

  • 25/07174/LBC Granted

    Ellerton House 11 Bryanston Square London W1H 2DQ

    Replacement of the existing timber pergola over the rear terrace with new. Linked with 25/07173/FULL (Retrospective)

    Decided 13 Nov 2025 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

HDA Architecture Agent, an architecture practice registered in London

Active · incorporated 2019 · London

17 applications on PlanIndex · across 7 councils · 71% granted

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

14 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 this grant of permission means

Westminster granted permission on 13 November 2025, 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

  • Ellerton House 11 Bryanston Square London W1H 2DQ

    25/07174/LBC Submitted 6 Oct 2025 50 yards away

    Replacement of the existing timber pergola over the rear terrace with new. Linked with 25/07173/FULL (Retrospective)

    Granted Heritage and listed buildings 11 docs

  • 9 Montagu Mews West London W1H 2EE

    26/02315/FULL Submitted 8 Apr 2026 50 yards away

    87% historically approved · decision due ~10 Jun

    Installation of air conditioning condenser unit and acoustic enclosure to roof.

    Awaiting decision Full applications 23 docs

  • 8 Montagu Mews West London W1H 2EE

    26/03228/FULL Submitted 15 May 2026 50 yards away

    87% historically approved · decision due ~10 Jul

    Roof extension, installation of air conditioning unit in an acoustic enclosure, alterations to the front and rear facades and associated works.

    Awaiting decision Full applications Extension 28 docs

  • Flat 1 49 Montagu Square London W1H 2LW

    25/05705/FULL Submitted 14 Aug 2025 50 yards away

    Replacement of existing single glazed sash timber windows and frames with new double glazed sash timber windows and frames - 5 windows on the front elevation. (Linked with 25/05706/LBC)

    Granted Full applications Windows or glazing 24 docs

  • Flat 1 49 Montagu Square London W1H 2LW

    25/05706/LBC Submitted 14 Aug 2025 50 yards away

    Replacement of existing single glazed sash timber windows and frames with new double glazed sash timber windows and frames - 5 windows on the front elevation. (Linked with 25/05705/FULL)

    Granted Heritage and listed buildings Windows or glazing 20 docs

  • 50 Montagu Square London W1H 2LW

    26/04360/LBC Submitted 1 Jul 2026 50 yards away

    90% historically approved · decision due ~26 Aug

    Replacement of areas of roof covering with slate tiles to match existing, and replacement of localised areas of flashing to the roof.

    Awaiting decision Heritage and listed buildings Roofing

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