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Planning application

Hallam House 56 - 60 Hallam Street London W1W 6JL

Awaiting decision Westminster 26/07297/FULL Full applications

Works: New dwelling Extension Windows or glazing

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

Proposal

Erection of balconies to the rear elevation at first, second, third and fourth-floor levels, and installation of doors in place of windows and use of the roof of the lower-ground-floor extension as terraces to serve six residential flats currently under construction.

As published by the council, reference 26/07297/FULL

Application record

Reference
26/07297/FULL
Category
Full applications
Status
Pending
Received
26 Oct 2026
Validated
29 Oct 2026
Postcode
W1W 6JL

Site history

Applications at this address on the Westminster register

This site has had 5 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
  • 25/04301/FULL Granted

    Hallam House 56 - 60 Hallam Street London W1W 6JL

    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.

    Decided 11 Nov 2025 Full applications

Timeline

Dates from the published record

  1. 26 Oct 2026

    Received by Westminster

  2. 29 Oct 2026

    Validated

    Checked as complete and ready for consideration.

  3. 1 Nov 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 24 December 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 91 days over the applications it decided in the last year.

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 119 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 0.3 miles

  • 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

  • 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

    25/04301/FULL Submitted 24 Jun 2025 50 yards away

    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.

    Granted Full applications Extension Roofing +2 124 docs
    Small domestic

  • Basement And Ground Floor Northumberland House 155 - 157 Great Portland Street London W1W 6QP

    26/01148/FULL Submitted 24 Feb 2026 50 yards away

    Dual alternative use of the ground and basement floors as showroom (sui generis) or MRI medical centre (Class E)

    Granted Full applications 17 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

In Westminster

  • 26/06234/FULL Decided

    40 Grosvenor Place London SW1X 7HJ

    Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

    Received 11 Sep, published by the council 18 Sep 2026 Full applications
  • 26/06015/FULL Decided

    129 Saltram Crescent London W9 3JT

    Erection of a two-storey rear extension.

    Received 3 Sep, published by the council 11 Sep 2026 Full applications
  • 26/07382/FULL Awaiting decision

    90 Gloucester Place London W1U 6HS

    Use of the building as an embassy (sui generis)

    Received 28 Oct, published by the council 2 Nov 2026 Full applications
  • 26/07363/FULL Awaiting decision

    36 Kilravock Street London W10 4HX

    Demolition of existing rear/side extension and construction of a new extension together with new glazing and doors, and changing the existing rooflights to the rear roof slope with new rooflights.

    Received 28 Oct, published by the council 2 Nov 2026 Full applications
  • 26/07371/FULL Awaiting decision

    8A Randolph Road London W9 1AN

    Amalgamation of two residential units with internal refurbishment and reconfiguration. (Linked with 26/07372/LBC)

    Received 28 Oct, published by the council 2 Nov 2026 Full applications