126 - 134 Baker Street London W1U 6SH

This site has had 2 applications since 2026.

• 26/04634/NMA Decided

  126 - 134 Baker Street London W1U 6SH

  Amendments to planning permission dated 10th November 2015 (RN:15/07396/FULL) for Erection of three storey extension at the rear of the building at second, third and fourth floor level and use of enlarged second to fourth floors as 11 flats (Class C3). Installation of plant within existing roof top plant room and plant within existing stairwell at roof level. Installation of photovoltaic panels and living roof at roof level and new entrance doors at ground floor level. Namely, changes to the extension at the rear of the building to alter the external appearance from a brick finish to a render finish, removal of two windows to side elevation to the extension to the rear of the building, replacement of existing retained windows to rear elevation (in lieu of installation of secondary internal glazing) and amending the wording of Condition 3 to enable the relocation of the cycle store to ground floor level.

  Submitted 10 Jul 2026 Amendments

1. 10 Sep 2026

   Received by Westminster

2. 15 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 5 November 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 65 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster's median decision took 65 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.

• 126 - 134 Baker Street London W1U 6SH

  26/04634/NMA Submitted 10 Jul 2026 50 yards away

  93% historically approved · decision due ~4 Sep

  Amendments to planning permission dated 10th November 2015 (RN:15/07396/FULL) for Erection of three storey extension at the rear of the building at second, third and fourth floor level and use of enlarged second to fourth floors as 11 flats (Class C3). Installation of plant within existing roof top plant room and plant within existing stairwell at roof level. Installation of photovoltaic panels and living roof at roof level and new entrance doors at ground floor level. Namely, changes to the extension at the rear of the building to alter the external appearance from a brick finish to a render finish, removal of two windows to side elevation to the extension to the rear of the building, replacement of existing retained windows to rear elevation (in lieu of installation of secondary internal glazing) and amending the wording of Condition 3 to enable the relocation of the cycle store to ground floor level.

  Decided Amendments New dwelling Extension +1
  Major scheme

• 128 Baker Street London W1U 6TZ

  07/09057/ADV Submitted 17 Oct 2007 50 yards away

  Display of externally illuminated fascia and projecting signs.

  Granted Advertising 6 docs

• 128 Baker Street London W1U 6TZ

  07/03608/ADV Submitted 23 Apr 2007 50 yards away

  Display of externally illuminated fascia sign and internally-illuminated projecting sign.

  Refused Advertising 5 docs

• 128 Baker Street London W1U 6TZ

  07/03607/FULL Submitted 23 Apr 2007 50 yards away

  Installation of new entrance doors and cladding to entrance pilasters.

  Granted Full applications 10 docs

• 6 Porter Street London W1U 6DD

  10/01180/ADFULL Submitted 12 Feb 2010 50 yards away

  Details of sample of the proposed stonework material pursuant to Condition 2 of planning permission dated 28 July 2009 (RN:09/03735).

  Granted Full applications 2 docs

• 6 Porter Street London W1U 6DD

  09/09802/ADFULL Submitted 4 Dec 2009 50 yards away

  Details of sample of the proposed stonework material pursuant to Condition 2 of planning permission dated 28 July 2009 (RN:09/03735).

  Refused Full applications 2 docs