34 Portland Place London W1B 1LX

This site has had 6 applications since 2025.

• 26/07338/ADLBC Awaiting decision

  34 Portland Place London W1B 1LX

  Details of samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 3 of listed building dated 15th October 2026 (RN:25/09187/LBC) (Linked to 26/07337/ADFULL)

  Submitted 26 Oct 2026
• 26/07337/ADFULL Awaiting decision

  34 Portland Place London W1B 1LX

  Details of samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 8 of planning permission dated 15.10.2026 (RN:25/09186/FULL) (Linked to 26/07338/ADLBC)

  Submitted 26 Oct 2026
• 26/07255/ADLBC Awaiting decision

  34 Portland Place London W1B 1LX

  Details of glazed panels to staircase showing extent of position and method of fixing pursuant to condition 2 part V of listed building dated 15 October 2015 2026 (25/09187/LBC)

  Submitted 22 Oct 2026
• 25/09187/LBC Awaiting decision

  34 Portland Place London W1B 1LX

  Use of 34 Portland Place primarily as the Ambassador's dwellinghouse, use of 73 New Cavendish Street as a Polish cultural centre and diplomatic premises, and associated alterations and extensions. [Linked to 25/09186/FULL]

  Submitted 19 Dec 2025 Heritage and listed buildings
• 25/09186/FULL Awaiting decision

  34 Portland Place London W1B 1LX

  Use of 34 Portland Place primarily as the Ambassador's dwellinghouse, use of 73 New Cavendish Street as a Polish cultural centre and diplomatic premises, and associated alterations and extensions. [Linked to 25/09187/LBC]

  Submitted 19 Dec 2025 Full applications

1. 23 Oct 2026

   Received by Westminster

2. 27 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 18 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.

• 25/09187/LBC Awaiting decision

  34 Portland Place London W1B 1LX

  Use of 34 Portland Place primarily as the Ambassador's dwellinghouse, use of 73 New Cavendish Street as a Polish cultural centre and diplomatic premises, and associated alterations and extensions. [Linked to 25/09186/FULL]

  Submitted 19 Dec 2025 Heritage and listed buildings

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster's median decision took 91 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on Westminster's portal will say. Our guide explains the common types.

• 34 Portland Place London W1B 1LX

  26/07255/ADLBC Submitted 22 Oct 2026 50 yards away

  89% historically approved · decision due ~17 Dec

  Details of glazed panels to staircase showing extent of position and method of fixing pursuant to condition 2 part V of listed building dated 15 October 2015 2026 (25/09187/LBC)

  Awaiting decision Windows or glazing

• 34 Portland Place London W1B 1LX

  26/07338/ADLBC Submitted 26 Oct 2026 50 yards away

  89% historically approved · decision due ~23 Dec

  Details of samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 3 of listed building dated 15th October 2026 (RN:25/09187/LBC) (Linked to 26/07337/ADFULL)

  Awaiting decision Windows or glazing

• 34 Portland Place London W1B 1LX

  26/07337/ADFULL Submitted 26 Oct 2026 50 yards away

  89% historically approved · decision due ~23 Dec

  Details of samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 8 of planning permission dated 15.10.2026 (RN:25/09186/FULL) (Linked to 26/07338/ADLBC)

  Awaiting decision Windows or glazing

• 5 Cavendish Mews South London W1W 6LB

  08/03349/CAC Submitted 14 Apr 2008 50 yards away

  Complete demolition of No. 6 and demolition behind retained façade at No. 5.

  Granted Heritage and listed buildings Demolition 2 docs

• 5 Cavendish Mews South London W1W 6LB

  08/03348/FULL Submitted 14 Apr 2008 50 yards away

  Demolition of No. 6 and partial demolition of No. 5 behind a retained facade to create four mews houses comprising 2x3 bed (ground, first and second floors) and 2x4 bed (basement, ground, first and second floors).

  Granted Full applications Demolition 25 docs

• 5 Cavendish Mews South London W1W 6LB

  10/07273/NMA Submitted 20 Aug 2010 50 yards away

  Amendments to approved scheme (RN:08/03348) for demolition of No. 6 and partial demolition of No. 5 behind a retained facade to create four mews houses comprising 2x3 bed (ground, first and second floors) and 2x4 bed (basement, ground, first and second floors) namely, the addition of two new roof access hatches to No. 5 and 5A and mansafe cable and change the existing metal roller shutter garage doors on No 5 to traditional painted timber garage doors.

  Granted Amendments Roofing Demolition 4 docs