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Planning application

1 Sussex Street London SW1V 4RZ

Awaiting decision Westminster 26/02525/FULL Full Planning Permission Application

Works: Extension Loft or dormer Windows or glazing

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

Proposal

Variation of condition 1 of planning permission dated 3rd June 2024 (RN:24/01644/FULL) for the Erection of mansard roof extension including new conservation rooflight; raising existing parapet at rear elevation, associated works. Namely, side window being moved to not clash with new stairs as much, and replaced with larger window to match existing adjacent window (cill dropped) and to be clear slimlite glazed painted timber framed sash window with integral glazing bars, white internal spacers and no trickle vents.

As published by the council, reference 26/02525/FULL

Application record

Reference
26/02525/FULL
Type
Full Planning Permission Application
Status
Pending
Received
16 Apr 2026
Validated
16 Apr 2026
Ward
Pimlico North
Postcode
SW1V 4RZ

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2026.

  • 26/04924/FULL Decided

    1 Sussex Street London SW1V 4RZ

    Erection of mansard extension and new side window at second floor level.

    Submitted 23 Jul 2026 Full applications
  • 26/04925/FULL Decided

    1 Sussex Street London SW1V 4RZ

    Erection of a side infill at raised ground floor level and terrace over at first floor level, with replacement window to single door.

    Submitted 23 Jul 2026 Full applications
  • 26/02494/FULL Awaiting decision

    1 Sussex Street London SW1V 4RZ

    Erection of a single-storey side infill extension over the existing side balcony at ground floor level and roof light to flat roof in front lightwell.

    Submitted 15 Apr 2026 Full applications

Timeline

Dates from the published record

  1. 16 Apr 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 11 June 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 65 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Peek Architecture Ltd Agent, an architecture practice

70 applications on PlanIndex · across 6 councils · 76% 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

19 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.

Trade members open them from here.

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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 91 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 500 metres

  • 1 Sussex Street London SW1V 4RZ

    26/04924/FULL Submitted 23 Jul 2026 0m away

    87% historically approved · decision due ~17 Sep

    Erection of mansard extension and new side window at second floor level.

    Decided Full applications Extension Loft or dormer +1

  • 1 Sussex Street London SW1V 4RZ

    26/04925/FULL Submitted 23 Jul 2026 0m away

    87% historically approved · decision due ~17 Sep

    Erection of a side infill at raised ground floor level and terrace over at first floor level, with replacement window to single door.

    Decided Full applications Extension Windows or glazing

  • 31 Winchester Street London SW1V 4NZ

    26/05977/FULL Submitted 2 Sep 2026 34m away

    87% historically approved · decision due ~4 Nov

    Replacement of front and rear windows with double glazed timber framed sash and casement windows; replacement of a door with a double glazed timber framed door; and associated works.

    Awaiting decision Full applications Windows or glazing

  • 4 Sussex Street London SW1V 4RS

    26/05978/FULL Submitted 2 Sep 2026 37m away

    87% historically approved · decision due ~4 Nov

    Replacement of existing single glazed timber framed sash windows to front and side elevations with double glazed timber framed sash windows. Replacement of existing single glazed timber framed sash and casement windows with double glazed timber framed sash and casement windows. Replacement of existing single glazed timber framed door with a double glazed timber framed door.

    Awaiting decision Full applications Windows or glazing

  • 1 Sussex Street London SW1V 4RZ

    26/02494/FULL Submitted 15 Apr 2026 40m away

    87% historically approved · decision due ~3 Jul

    Erection of a single-storey side infill extension over the existing side balcony at ground floor level and roof light to flat roof in front lightwell.

    Awaiting decision Full applications Extension Loft or dormer 24 docs
    Small domestic

  • Basement Flat A 103 Alderney Street London SW1V 4HE

    26/01903/TCA Submitted 24 Mar 2026 42m away

    1 x bay tree (rear): reduce height by 2m to 3m; to no more than previous reduction points; retaining shortened growth for furnishing. Reduce sides to match (by approximately 1m to 1.5m). Thin crown by 20%. 1 x Cotoneaster (rear): reduce low lateral branch over neighbours garden back to the upwards growing lateral branch about 1m from the main trunk union, reduce remaining crown by 2-3m all round to shape and balance ensuring retention of fine branch structure across the entire canopy area for crown continuity.

    Granted Trees 7 docs

In Westminster

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    11 Sep 2026 Full applications
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    1 Jun 2026 Full applications