43 - 45 Portman Square London W1H 6LY

This site has had 14 applications since 2004: 8 approved, 0 refused.

• 26/04951/NMA Decided

  43 - 45 Portman Square London W1H 6LY

  Amendments to planning permission dated 22 April 2026 (Ref: 25/06153/FULL) for, 'Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works'; NAMELY, to amend the wording of Condition 27 to allow basement demolition work to proceed in advance of sustaianble drainage construction drawings being approved.

  Submitted 23 Jul 2026 Amendments
• 26/04721/ADFULL Decided

  43 - 45 Portman Square London W1H 6LY

  Details of accurate and verified estimates of the 'Be Seen' energy performance indicators for the Development as outlined in chapter 3 (Planning Stage) of the Be Seen Guidance pursuant to condition 33 (A) of planning permission dated 7th April 2025 (RN:24/04987/FULL)

  Submitted 15 Jul 2026
• 26/04154/NMA Awaiting decision

  43 - 45 Portman Square London W1H 6LY

  Amendments to planning permission dated 02 March 2026 (RN: 25/06153/FULL) for the variation of Condition 1 of planning permission dated 7th April 2025 (RN: 24/04987/FULL) for, 'Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works'; Namely,the retention of existing cores, the infilling of atria, the provision of additional rooflights to the western 3rd floor terrace, layout changes at ground and lower ground levels and changes to some windows on the eastern façade and retention of existing first floor windows, resulting in single storey full height glazing to the retail frontages along Orchard Street (Application under Section 73 of the Act); NAMELY rooftop plant screening; enlargement of lift overrun; adjustments to PV layout; reconfiguration of Level 10 north façade with doors and panels; consolidation and removal of blue roofs at Levels 10 and 8; enlargements of SW stair roof with addition of vent for pressurisation; updating of south façade windows with discreet vents; alerations to NW mansard for maintenance access; addition of additional louvres for building services.

  Submitted 23 Jun 2026 Amendments
• 26/02687/NMA Awaiting decision

  43 - 45 Portman Square London W1H 6LY

  Amendments to planning permission dated 22nd April 2026 (RN:25/06153/FULL) for: Variation of Condition 1 of planning permission dated 7th April 2025 (RN: 24/04987/FULL) for: Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works namely, amendments to mansard roof and rear façades; alterations to skylights and access doors to terraces; alterations to Portman Mews and Orchard Street elevations and to main entrance; alterations to louvres and to internal layout.

  Submitted 22 Apr 2026 Amendments
• 26/00708/ADFULL Granted

  43 - 45 Portman Square London W1H 6LY

  Details of signed Appendix A of the council's Code of Construction Practice pursuant to Condition 19 of planning permission dated 07 April 2025 (RN: 24/04987/FULL)

  Decided 4 Mar 2026 Full applications
• 26/00709/ADFULL Granted

  43 - 45 Portman Square London W1H 6LY

  Details of Construction Logistics Plan to clarify that TfL's assets and services are not adversely affected during the demolition and construction of the application pursuant to Condition 32 of planning permission dated 07 April 2025 (RN: 24/04987/FULL)

  Decided 12 Mar 2026 Full applications
• 25/06153/FULL Awaiting decision

  43 - 45 Portman Square London W1H 6LY

  Variation of Condition 1 of planning permission dated 7th April 2025 (RN: 24/04987/FULL) for, 'Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works'; Namely,the retention of existing cores, the infilling of atria, the provision of additional rooflights to the western 3rd floor terrace, layout changes at ground and lower ground levels and changes to some windows on the eastern façade and retention of existing first floor windows, resulting in single storey full height glazing to the retail frontages along Orchard Street (Application under Section 73 of the Act).

  Submitted 29 Aug 2025 Full applications
• 25/03065/ADFULL Awaiting decision

  43 - 45 Portman Square London W1H 6LY

  Details of accurate and verified estimates of the 'Be Seen' energy performance indicators for the Development as outlined in chapter 3 (Planning Stage) of the Be Seen Guidance pursuant to Condition 33 (A) of planning permission dated 7th April 2025 (RN:24/04987/FULL)

  Submitted 2 May 2025 Full applications
• 06/00987/AD7 Granted

  43 - 45 Portman Square London W1H 6LY

  Display of non-illuminated estate agent board measuring 600mm x 450mm to be attached to the railings in front of the building at a height of 1.5m from ground floor level, for a temporary period of 6 months.

  Decided 16 Feb 2006 Advertising
• 05/10346/AD7 Granted

  43 - 45 Portman Square London W1H 6LY

  Display for a temporary period of six months of a non-illuminated 'to let' board attached to the railings in front of the building at street level and measuring 0.6m x 0.45m.

  Decided 29 Dec 2005 Advertising

1. 5 Feb 2026

   Received by Westminster

2. 27 Mar 2026

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 27 March 2026, 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.

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.

• 43 - 45 Portman Square London W1H 6LY

  06/00987/AD7 Submitted 9 Feb 2006 50 yards away

  Display of non-illuminated estate agent board measuring 600mm x 450mm to be attached to the railings in front of the building at a height of 1.5m from ground floor level, for a temporary period of 6 months.

  Granted Advertising 3 docs

• 43 - 45 Portman Square London W1H 6LY

  04/09146/AD7 Submitted 18 Nov 2004 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board attached to the railings in front of the building at street level and measuring 0.6 x 0.45m.

  Granted Advertising 3 docs

• 43 - 45 Portman Square London W1H 6LY

  25/03065/ADFULL Submitted 2 May 2025 50 yards away

  88% historically approved · decision due ~27 Jun

  Details of accurate and verified estimates of the 'Be Seen' energy performance indicators for the Development as outlined in chapter 3 (Planning Stage) of the Be Seen Guidance pursuant to Condition 33 (A) of planning permission dated 7th April 2025 (RN:24/04987/FULL)

  Awaiting decision Full applications 7 docs

• 43 - 45 Portman Square London W1H 6LY

  05/10346/AD7 Submitted 22 Dec 2005 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board attached to the railings in front of the building at street level and measuring 0.6m x 0.45m.

  Granted Advertising 2 docs

• Hesketh House 43 - 45 Portman Square London W1H 6LY

  06/10363/FULL Submitted 22 Dec 2006 50 yards away

  Alterations to entrance on Portman Square including removal of gates and installation of full height glazed lobby.

  Withdrawn Full applications Windows or glazing 10 docs

• 43 - 45 Portman Square London W1H 6LY

  26/04951/NMA Submitted 23 Jul 2026 50 yards away

  93% historically approved · decision due ~17 Sep

  Amendments to planning permission dated 22 April 2026 (Ref: 25/06153/FULL) for, 'Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works'; NAMELY, to amend the wording of Condition 27 to allow basement demolition work to proceed in advance of sustaianble drainage construction drawings being approved.

  Decided Amendments Extension Demolition

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL 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 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications