Mayfair Telephone Exchange 33 - 39 Farm Street London W1J 5RR

This site has had 2 applications since 2026.

• 26/03895/FULL Decided

  Mayfair Telephone Exchange 33 - 39 Farm Street London W1J 5RR

  The removal of 3 No. antenna at 25.5m, 3 No. MHA, 3 No. RRU, ancillary equipment and 1 No. cabinet along with the installation of 3 No. antenna at 27.5m, 28m and 27m as well as ancillary equipment and 1 No. cabinet.

  Submitted 15 Jun 2026 Full applications

1. 2 Sep 2026

   Received by Westminster

2. 11 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 28 October 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 decided full applications in a median of 91 days. More in our guide to how long planning decisions take.

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.

• Mayfair Telephone Exchange 33 - 39 Farm Street London W1J 5RR

  26/03895/FULL Submitted 15 Jun 2026 50 yards away

  87% historically approved · decision due ~10 Aug

  The removal of 3 No. antenna at 25.5m, 3 No. MHA, 3 No. RRU, ancillary equipment and 1 No. cabinet along with the installation of 3 No. antenna at 27.5m, 28m and 27m as well as ancillary equipment and 1 No. cabinet.

  Decided Full applications

• Flat 5 110 Mount Street London W1K 2TS

  26/04571/ADFULL Submitted 8 Jul 2026 50 yards away

  89% historically approved · decision due ~2 Sep

  Details of noise report pursuant to condition 3 of planning permission dated 18 April 2023 (RN: 23/00903/FULL)

  Awaiting decision

• 25 Farm Street London W1J 5RQ

  10/08468/FULL Submitted 1 Oct 2010 50 yards away

  Demolition of existing building and redevelopment to provide a building comprising two basements, ground and three upper floors for use as a single family dwelling.

  Granted Full applications Demolition 19 docs
  Domestic

• 25 Farm Street London W1J 5RQ

  10/08469/CAC Submitted 1 Oct 2010 50 yards away

  Demolition of existing dwelling.

  Granted Heritage and listed buildings Demolition 2 docs
  Domestic

• 25 Farm Street London W1J 5RQ

  05/08877/CAC Submitted 31 Oct 2005 50 yards away

  Demolition of existing building in connection with redevelopment of site to provide single dwelling house.

  Refused Heritage and listed buildings Demolition 3 docs
  Domestic

• 25 Farm Street London W1J 5RQ

  05/08876/FULL Submitted 31 Oct 2005 50 yards away

  Demolition of existing building and erection of house, comprising basement, ground and four upper storeys and integral garage. (Revised application)

  Refused Full applications Demolition 12 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06297/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06234/FULL Awaiting decision

  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
• 26/06249/FULL Awaiting decision

  53 Wimpole Street London W1G 8YH

  Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)

  Received 11 Sep, published by the council 18 Sep 2026 Full applications
• 26/03576/FULL Decided

  15A Devonshire Terrace London W2 3DW

  Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

  Received 1 Jun, published by the council 11 Sep 2026 Full applications