Skip to content
PlanIndex Get alerts
Menu

Planning application

Hallam House 56 - 60 Hallam Street London W1W 6JL

Granted Westminster 25/04301/FULL Full Planning Permission Application

Works: Extension Roofing 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

Demolition of existing roof plant room and erection of a single floor roof extension to provide one residential unit (Class C3). Erection of replacement plant room, and provision of an external terrace, landscaping and green roof. Alterations to rear fenestration pattern. Erection of single storey lower ground floor extension within rear lightwell to provide additional office floorspace (Class E) and replacement of a window with a door at front ground floor level.

As published by the council, reference 25/04301/FULL

Application record

Reference
25/04301/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
24 Jun 2025
Validated
4 Aug 2025
Decided
11 Nov 2025
Ward
West End
Decision by
Sub-Committee
Postcode
W1W 6JL

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2025: 1 approved, 0 refused.

  • 26/01015/FULL Awaiting decision

    Hallam House 56 - 60 Hallam Street London W1W 6JL

    Change of use of existing building to form 6 residential flats (Class C3), alterations to rear fenestration pattern, erection of single storey lower ground floor extension within rear lightwell to provide additional residential floorspace (Class C3) and replacement of an existing window with a door at front ground floor level.

    Submitted 17 Feb 2026 Full applications
  • 26/00825/ADFULL Awaiting decision

    Hallam House 56 - 60 Hallam Street London W1W 6JL

    Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 4 of prior approval dated 11 March 2025 (RN: 25/00247/P3JPA).

    Submitted 11 Feb 2026 Full applications
  • 26/00826/ADFULL Awaiting decision

    Hallam House 56 - 60 Hallam Street London W1W 6JL

    Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 18 of planning permission dated 19 November 2025 (RN: 25/04301/FULL).

    Submitted 11 Feb 2026 Full applications

Timeline

Dates from the published record

  1. 24 Jun 2025

    Received by Westminster

  2. 4 Aug 2025

    Validated

    Checked as complete and ready for consideration.

  3. 11 Nov 2025

    Decision issued: Application Permitted

  4. 30 Aug 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/00826/ADFULL Awaiting decision

    Hallam House 56 - 60 Hallam Street London W1W 6JL

    Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 18 of planning permission dated 19 November 2025 (RN: 25/04301/FULL).

    Submitted 11 Feb 2026 Full applications

Who's behind it

Company information only, from the register and Companies House

Savills Limited Agent, registered in London

Active · incorporated 1987 · London

2,470 applications on PlanIndex · across 194 councils · 92% 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

124 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 11 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

  • Hallam House 56 - 60 Hallam Street London W1W 6JL

    26/01015/FULL Submitted 17 Feb 2026 50 yards away

    88% historically approved · decision due ~14 Apr

    Change of use of existing building to form 6 residential flats (Class C3), alterations to rear fenestration pattern, erection of single storey lower ground floor extension within rear lightwell to provide additional residential floorspace (Class C3) and replacement of an existing window with a door at front ground floor level.

    Awaiting decision Full applications New dwelling Extension +1 34 docs
    Small domestic

  • Hallam House 56 - 60 Hallam Street London W1W 6JL

    26/00825/ADFULL Submitted 11 Feb 2026 50 yards away

    88% historically approved · decision due ~8 Apr

    Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 4 of prior approval dated 11 March 2025 (RN: 25/00247/P3JPA).

    Awaiting decision Full applications 5 docs

  • Hallam House 56 - 60 Hallam Street London W1W 6JL

    26/00826/ADFULL Submitted 11 Feb 2026 50 yards away

    88% historically approved · decision due ~8 Apr

    Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 18 of planning permission dated 19 November 2025 (RN: 25/04301/FULL).

    Awaiting decision Full applications 5 docs

  • Northumberland House 155 - 157 Great Portland Street London W1W 6QP

    05/01357/CLEUD Submitted 21 Feb 2005 50 yards away

    Installation of two air conditioning units in rear lightwell.

    Granted Lawful development 5 docs

  • Northumberland House 155-157 Great Portland Street London W1W 6QP

    07/05158/FULL Submitted 12 Jun 2007 50 yards away

    Relocation of air conditioning units onto the main roof within a new enclosure.

    Refused Full applications 12 docs

  • Northumberland House 155 - 157 Great Portland Street London W1W 6QP

    06/01678/FULL Submitted 6 Mar 2006 50 yards away

    Retention of four air conditioning condenser units on rear first floor flat roof.

    Refused Full applications 7 docs

In Westminster

  • 26/05708/FULL Decided

    Flat 23 Imperial Court 55 - 56 Prince Albert Road London NW8 7PT

    Replacement of existing windows and louvres.

    Received 20 Aug, published by the council 18 Sep 2026 Full applications
  • 26/05984/FULL Decided

    41 Sutherland Street London SW1V 4JX

    Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

    Received 2 Sep, published by the council 11 Sep 2026 Full applications
  • 26/07229/FULL Awaiting decision

    5 D'arblay Street London W1F 8DL

    Alterations to the existing fixed windows to form two openable sash windows. (Linked with 26/07230/ADV)

    Received 22 Oct, published by the council 26 Oct 2026 Full applications
  • 26/07224/FULL Awaiting decision

    8 Hinde Street London W1U 3BQ

    Use of the building as an Embassy (sui generis) with reversion to Class E on cessation of occupation by the Government of the United Mexican States. Erection of a flagpole to front elevation.

    Received 22 Oct, published by the council 26 Oct 2026 Full applications
  • 26/06134/FULL Decided

    Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

    Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

    Received 8 Sep, published by the council 15 Sep 2026 Full applications