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Planning application

63 Blandford Street London W1U 7HR

Awaiting decision Westminster 26/06137/LBC Heritage and listed buildings

Works: Loft or dormer Windows or glazing

Relates to 25/04450/LBC

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

Proposal

Variation of 25/04450/LBC to allow raising of the chimney stack to retain the same height relationship to the roof; formation of a brick party wall; provision of dormer windows to match neighbouring dormer profiles, alteration of the rear dormers to casement doors; and alteration to the proposed stair to the fourth floor. (Linked to 26/04651/FULL)

As published by the council, reference 26/06137/LBC

Application record

Reference
26/06137/LBC
Category
Heritage and listed buildings
Status
Pending
Received
8 Sep 2026
Validated
8 Sep 2026
Postcode
W1U 7HR

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2025: 2 approved, 0 refused.

  • 26/05078/ADFULL Awaiting decision

    63 Blandford Street London W1U 7HR

    Details of written photographic specification of the materials; exterior of the new extension; new windows, rooflights, and doors; new roof balustrade to rear; and new solar panels pursuant to conditions 4 and 5 of planning permission dated 03 November 2025 (RN: 25/04449/FULL).

    Submitted 28 Jul 2026 Full applications
  • 25/04450/LBC Granted

    63 Blandford Street London W1U 7HR

    Erection of mansard roof extension with three new front dormers, one dormer window (replace existing) and one dormer door to the rear, raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level (Linked to 25/04449/FULL)

    Decided 3 Nov 2025 Heritage and listed buildings
  • 25/04449/FULL Granted

    63 Blandford Street London W1U 7HR

    Erection of mansard roof extension with three new front dormers, two rear dormers (one dormer window and one dormer door), raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level. (Linked to 25/04450/LBC)

    Decided 3 Nov 2025 Full applications

Timeline

Dates from the published record

  1. 8 Sep 2026

    Received by Westminster

  2. 17 Sep 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 3 November 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.

Cases linked to this one on the register

  • 25/04450/LBC Granted

    63 Blandford Street London W1U 7HR

    Erection of mansard roof extension with three new front dormers, one dormer window (replace existing) and one dormer door to the rear, raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level (Linked to 25/04449/FULL)

    Decided 3 Nov 2025 Heritage and listed buildings

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 heritage and listed building applications in a median of 95 days. More in our guide to how long planning decisions take.

About heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 63 Blandford Street London W1U 7HR

    26/05078/ADFULL Submitted 28 Jul 2026 50 yards away

    87% historically approved · decision due ~22 Sep

    Details of written photographic specification of the materials; exterior of the new extension; new windows, rooflights, and doors; new roof balustrade to rear; and new solar panels pursuant to conditions 4 and 5 of planning permission dated 03 November 2025 (RN: 25/04449/FULL).

    Awaiting decision Full applications Extension Loft or dormer +2 10 docs

  • 63 Blandford Street London W1U 7HR

    25/04449/FULL Submitted 27 Jun 2025 50 yards away

    Erection of mansard roof extension with three new front dormers, two rear dormers (one dormer window and one dormer door), raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level. (Linked to 25/04450/LBC)

    Granted Full applications Extension Loft or dormer +1 32 docs

  • 63 Blandford Street London W1U 7HR

    25/04450/LBC Submitted 27 Jun 2025 50 yards away

    Erection of mansard roof extension with three new front dormers, one dormer window (replace existing) and one dormer door to the rear, raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level (Linked to 25/04449/FULL)

    Granted Heritage and listed buildings Extension Loft or dormer +1 33 docs

  • 63 Blandford Street City Of Westminster London W1U 7HR

    25/04451/FULL Submitted 27 Jun 2025 50 yards away

    Erection of mono-pitched and sheer roof extension to rear with two sash windows and a single timber door to the rear, raise chimney height by 330mm, installation of six over six pane slimline double glazed timber sash windows and installation of new roof top photovoltaic panels and associated internal alterations. (Linked to 25/04452/LBC)

    Granted Full applications Extension Roofing +1 33 docs

  • 63 Blandford Street City Of Westminster London W1U 7HR

    25/04452/LBC Submitted 27 Jun 2025 50 yards away

    Erection of mono-pitched and sheer roof extension to rear with two sash windows and a single timber door to the rear, raise chimney height by 330mm, installation of six over six pane slimline double glazed timber sash windows and installation of new roof top photovoltaic panels and associated internal alterations. (Linked to 25/04451/FULL)

    Granted Heritage and listed buildings Extension Roofing +1 31 docs

  • 58 Blandford Street London W1U 7JB

    25/08843/ADV Submitted 5 Dec 2025 50 yards away

    Display of non-illuminated vinyls applied to windows at no.58 no. 60 and no.62 for a temporary period till 28 February 2026 (Retrospective).

    Granted Advertising Windows or glazing 6 docs

In Westminster

  • 26/04878/LBC Decided

    34 Grosvenor Street London W1K 4QU

    Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

    Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
  • 26/04141/LBC Decided

    80E Randolph Avenue London W9 1BG

    Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

    Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings
  • 26/06250/LBC 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 26/06249/FULL)

    Received 11 Sep, published by the council 18 Sep 2026 Heritage and listed buildings
  • 26/06203/LBC Awaiting decision

    106 Blandford Street London W1U 8AG

    Installation of two roof-mounted anchor posts. (Linked to 26/06202/FULL)

    Received 10 Sep, published by the council 17 Sep 2026 Heritage and listed buildings
  • 26/06187/LBC Awaiting decision

    4 Shepherd Market London W1J 7QB

    Installation of wall mounted highway street light on to the facade of 4 Shepherd Market.

    Received 10 Sep, published by the council 17 Sep 2026 Heritage and listed buildings