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Planning application

23 Eaton Mews North London SW1X 8AR

Decided Westminster 26/04809/FULL Full applications

Works: Extension Loft or dormer Windows or glazing

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

Erection of mansard roof extension; fenestration alterations to both elevations including Juliet balconies to first floor front elevation; new balustrade and fixed rooflight to rear roof terrace and canopy above front entrance.

As published by the council, reference 26/04809/FULL

Application record

Reference
26/04809/FULL
Category
Full applications
Status
Decided
Received
20 Jul 2026
Validated
20 Jul 2026
Ward
Knightsbridge & Belgravia
Postcode
SW1X 8AR

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2026.

  • 26/07079/FULL Awaiting decision

    23 Eaton Mews North London SW1X 8AR

    Demolition of the existing two storey mews and provision of a new building comprising of ground floor, first floor (including rear terrace) and mansard roof extension.

    Submitted 16 Oct 2026 Full applications

Timeline

Dates from the published record

  1. 20 Jul 2026

    Received by Westminster

  2. 1 Aug 2026

    Added to PlanIndex

  3. 11 Sep 2026

    Status changed to Decided

    Previously Pending.

Documents

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

20 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

After the decision

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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

  • 23 Eaton Mews North London SW1X 8AR

    26/07079/FULL Submitted 16 Oct 2026 50 yards away

    88% historically approved · decision due ~11 Dec

    Demolition of the existing two storey mews and provision of a new building comprising of ground floor, first floor (including rear terrace) and mansard roof extension.

    Awaiting decision Full applications Extension Loft or dormer +1

  • Basement Flat 58 Eaton Place London SW1X 8AT

    26/00311/LBC Submitted 20 Jan 2026 50 yards away

    Internal refurbishment and layout alterations

    Granted Heritage and listed buildings 14 docs

  • 56 Eaton Place London SW1X 8AT

    25/08610/FULL Submitted 25 Nov 2025 50 yards away

    Partial demolition and rebuilding; erection of a roof extension and roof terrace to main roof level; alteration to fenestration, including upgrade to existing windows; installation of new first floor balustrade, rooftop plant equipment, PV panels to Mews building roof, and new garage doors to Mews building; in connection with the amalgamation of the main building into a single dwelling and the conversion of the Mews building into three dwellings (Class C3).

    Granted Full applications Extension Demolition +1 101 docs
    Several homes

  • 56 Eaton Place London SW1X 8AT

    25/08611/LBC Submitted 25 Nov 2025 50 yards away

    Partial demolition and rebuilding; erection of a roof extension and roof terrace to main roof level; alteration to fenestration, including upgrade to existing windows; installation of new first floor balustrade, rooftop plant equipment, PV panels to Mews building roof, and new garage doors to Mews building; internal alterations at all levels; in connection with the amalgamation of the main building into a single dwelling and the conversion of the Mews building into three dwellings (Class C3).

    Granted Heritage and listed buildings Extension Demolition +1 93 docs
    Several homes

  • 60 Eaton Place London SW1X 8AT

    22/05351/ADLBC Submitted 5 Aug 2022 50 yards away

    Details of new garage doors pursuant to Condition 3 (ii) of listed building permission dated 30th May 2022 (RN:21/08631/LBC) (Linked to 22/05298/ADFULL)

    Granted Conditions 9 docs

  • 60 Eaton Place London SW1X 8AT

    22/05298/ADFULL Submitted 3 Aug 2022 50 yards away

    Details of new garage doors pursuant to condition 6 (ii) of planning permission dated 30th May 2022 (RN:21/08630/FULL).

    Granted Full applications 9 docs

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    Received 3 Aug, published by the council 28 Aug 2026 Full applications
  • 26/07521/FULL Awaiting decision

    Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

    Installation of one external condenser unit

    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL Awaiting decision

    Buckingham Palace The Mall London SW1A 1AA

    Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07472/FULL Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

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