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Planning application

Orbis House 5 Mansfield Street London W1G 9NG

Decided Westminster 26/04876/LBC Heritage and listed buildings

Works: Windows or glazing

Relates to 26/04873/NMA

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

Proposal

Provision of guarding system to provide safe access for maintenance across the roof; alteration at south elevations omitting window SFW11 from the new WC, remove the existing RWP from the internal courtyard corner, removal of the existing plastic section of a redundant vent pipe at lower level and retain original lead; new cast iron rain water pipes at west elevation; and internal layout alterations at basement, ground, 2nd, 3rd floors. (Linked with 26/04873/NMA)

As published by the council, reference 26/04876/LBC

Application record

Reference
26/04876/LBC
Category
Heritage and listed buildings
Status
Decided
Received
21 Jul 2026
Validated
21 Jul 2026
Postcode
W1G 9NG

Site history

Applications at this address on the Westminster register

This site has had 5 applications since 2025: 3 approved, 0 refused.

  • 26/04873/NMA Awaiting decision

    Orbis House 5 Mansfield Street London W1G 9NG

    Amendments to planning permission dated 05 September 2024 (RN: 24/01895/FULL) for: new courtyard surface including walk-on rooflight; window and door alterations; new window to Mansfield Mews at second floor level; new rooflights; repairs to roof and external brickwork; erection of new staircase in front area lightwell; partial infill of rear lightwell at ground floor level; erection of roof terrace; installation of PV panels at roof level; and associated works namely; to allow provision of guarding system to provide safe access for maintenance across the roof; alteration at south elevation omitting window SFW11 from the new WC, remove the existing RWP from the internal courtyard corner, removal of the existing plastic section of a redundant vent pipe at lower level and retain original lead; new cast iron rain water pipes at west elevation; and internal layout alterations at basement, ground, 2nd, 3rd floors. (Linked with 26/04876/LBC)

    Submitted 21 Jul 2026 Amendments
  • 26/00954/ADFULL Granted

    Orbis House 5 Mansfield Street London W1G 9NG

    Detailed specifications, and drawings at 1:10 with full size details, of refurbishment works to the windows, and of detailed drawings at 1: 10 with full size sections through the glazing bars of the new sash windows and French windows pursuant to condition 6 of planning permission dated 5th September 2024 (RN:24/01895/FULL)

    Decided 15 Apr 2026 Full applications
  • 26/00940/ADLBC Granted

    Orbis House 5 Mansfield Street London W1G 9NG

    Detailed specifications, and drawings at 1:10 with full size details, of refurbishment works to the windows, and of detailed drawings at 1: 10 with full size sections through the glazing bars of the new sash windows and French windows pursuant to Condition 6 of Listed Building Consent 05 September 2024 (RN24/01896/LBC)

    Decided 7 Apr 2026 Conditions
  • 25/08080/CLEUD Granted

    Orbis House 5 Mansfield Street London W1G 9NG

    Confirmation that the material change of use from office to use as a single family dwelling house under planning permission (RN 12/09926/FULL) has taken place and that use as a single family dwelling house is now the building's lawful use.

    Decided 26 May 2026 Lawful development

Timeline

Dates from the published record

  1. 21 Jul 2026

    Received by Westminster

  2. 29 Jul 2026

    Added to PlanIndex

  3. 11 Sep 2026

    Status changed to Decided

    Previously Pending.

Cases linked to this one on the register

  • 26/04873/NMA Awaiting decision

    Orbis House 5 Mansfield Street London W1G 9NG

    Amendments to planning permission dated 05 September 2024 (RN: 24/01895/FULL) for: new courtyard surface including walk-on rooflight; window and door alterations; new window to Mansfield Mews at second floor level; new rooflights; repairs to roof and external brickwork; erection of new staircase in front area lightwell; partial infill of rear lightwell at ground floor level; erection of roof terrace; installation of PV panels at roof level; and associated works namely; to allow provision of guarding system to provide safe access for maintenance across the roof; alteration at south elevation omitting window SFW11 from the new WC, remove the existing RWP from the internal courtyard corner, removal of the existing plastic section of a redundant vent pipe at lower level and retain original lead; new cast iron rain water pipes at west elevation; and internal layout alterations at basement, ground, 2nd, 3rd floors. (Linked with 26/04876/LBC)

    Submitted 21 Jul 2026 Amendments

1 later application on the register refers to this one:

  • 26/04873/NMA Awaiting decision

    Orbis House 5 Mansfield Street London W1G 9NG

    Amendments to planning permission dated 05 September 2024 (RN: 24/01895/FULL) for: new courtyard surface including walk-on rooflight; window and door alterations; new window to Mansfield Mews at second floor level; new rooflights; repairs to roof and external brickwork; erection of new staircase in front area lightwell; partial infill of rear lightwell at ground floor level; erection of roof terrace; installation of PV panels at roof level; and associated works namely; to allow provision of guarding system to provide safe access for maintenance across the roof; alteration at south elevation omitting window SFW11 from the new WC, remove the existing RWP from the internal courtyard corner, removal of the existing plastic section of a redundant vent pipe at lower level and retain original lead; new cast iron rain water pipes at west elevation; and internal layout alterations at basement, ground, 2nd, 3rd floors. (Linked with 26/04876/LBC)

    Submitted 21 Jul 2026 Amendments

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 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

  • Orbis House 5 Mansfield Street London W1G 9NG

    26/04873/NMA Submitted 21 Jul 2026 50 yards away

    93% historically approved · decision due ~15 Sep

    Amendments to planning permission dated 05 September 2024 (RN: 24/01895/FULL) for: new courtyard surface including walk-on rooflight; window and door alterations; new window to Mansfield Mews at second floor level; new rooflights; repairs to roof and external brickwork; erection of new staircase in front area lightwell; partial infill of rear lightwell at ground floor level; erection of roof terrace; installation of PV panels at roof level; and associated works namely; to allow provision of guarding system to provide safe access for maintenance across the roof; alteration at south elevation omitting window SFW11 from the new WC, remove the existing RWP from the internal courtyard corner, removal of the existing plastic section of a redundant vent pipe at lower level and retain original lead; new cast iron rain water pipes at west elevation; and internal layout alterations at basement, ground, 2nd, 3rd floors. (Linked with 26/04876/LBC)

    Awaiting decision Amendments Extension Loft or dormer +1
  • Orbis House 5 Mansfield Street London W1G 9NG

    26/00954/ADFULL Submitted 16 Feb 2026 50 yards away

    Detailed specifications, and drawings at 1:10 with full size details, of refurbishment works to the windows, and of detailed drawings at 1: 10 with full size sections through the glazing bars of the new sash windows and French windows pursuant to condition 6 of planning permission dated 5th September 2024 (RN:24/01895/FULL)

    Granted Full applications Windows or glazing 41 docs
  • Orbis House 5 Mansfield Street London W1G 9NG

    26/00940/ADLBC Submitted 16 Feb 2026 50 yards away

    Detailed specifications, and drawings at 1:10 with full size details, of refurbishment works to the windows, and of detailed drawings at 1: 10 with full size sections through the glazing bars of the new sash windows and French windows pursuant to Condition 6 of Listed Building Consent 05 September 2024 (RN24/01896/LBC)

    Granted Conditions Windows or glazing 20 docs
  • Orbis House 5 Mansfield Street London W1G 9NG

    25/08080/CLEUD Submitted 6 Nov 2025 50 yards away

    Confirmation that the material change of use from office to use as a single family dwelling house under planning permission (RN 12/09926/FULL) has taken place and that use as a single family dwelling house is now the building's lawful use.

    Granted Lawful development 25 docs
    Domestic
  • 4 Mansfield Mews London W1G 9NL

    25/05100/LBC Submitted 22 Jul 2025 50 yards away

    Partial removal of existing roof to create new roof terrace, accessible via a new stair with 0.9m balustrade perimeter; new glazed screen to courtyard; new window to the South Elevation; replacement of external door with a window at south elevation; re-covering and reinsulation ofr oof pitch on the Mews road elevation; modifications to the Mews Elevation and the creation of an internal bin store; and internal alterations to create a new double-height living space and reconfiguring the layout to incorporate one bedroom, a kitchen, a shower room, and a WC. (Linked to 25/05099/FULL)

    Withdrawn Heritage and listed buildings Roofing Windows or glazing 25 docs
  • 4 Mansfield Mews London W1G 9NL

    25/05099/FULL Submitted 22 Jul 2025 50 yards away

    Partial removal of existing roof to create new roof terrace, accessible via a new stair with 0.9m balustrade perimeter; new glazed screen to courtyard; new window to the South Elevation; replacement of external door with a window at south elevation; re-covering and reinsulation of roof pitch on the Mews road elevation; modifications to the Mews Elevation and the creation of an internal bin store; and internal alterations to create a new double-height living space and reconfiguring the layout to incorporate one bedroom, a kitchen, a shower room, and a WC. (Linked with 25/05100/LBC)

    Withdrawn Full applications Roofing Windows or glazing 20 docs

In Westminster

  • 26/07529/LBC Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water supply pipe on rear courtyard elevation. (Linked with 26/07528/FULL)

    Received 5 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
  • 26/07509/LBC 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 26/07508/FULL)

    Received 4 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
  • 26/07473/LBC Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07472/FULL)

    Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
  • 26/07471/LBC Awaiting decision

    12 Queen Anne's Gate London SW1H 9AA

    Excavation of single-storey basement, internal reconfiguration and installation of modern services. (Linked with 26/07470/FULL)

    Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
  • 26/07461/LBC Awaiting decision

    1 Savile Row London W1S 3JR

    Minor internal works comprising redecoration and upgrades to lighting, flooring and bathroom and kitchen facilities, together with external works including new lighting and signage.

    Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings