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Planning application

Second Floor (Excluding North East Part) Devonshire House Mayfair Place London W1J 8AJ

Awaiting decision Westminster 26/05129/FULL Full applications

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Installation of two air conditioning condenser units to the second floor lightwell, two internal air conditioning units, and associated pipework. (Linked with 26/05130/LBC)

As published by the council, reference 26/05129/FULL

Application record

Reference
26/05129/FULL
Category
Full applications
Status
Pending
Received
30 Jul 2026
Validated
20 Aug 2026
Postcode
W1J 8AJ

Timeline

Dates from the published record

  1. 30 Jul 2026

    Received by Westminster

  2. 20 Aug 2026

    Validated

    Checked as complete and ready for consideration.

  3. 22 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 15 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 61 days over the applications it decided in the last year.

What happens while it is decided

The process from here

This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • Devonshire House Mayfair Place London W1J 8AJ

    26/03963/ADLBC Submitted 16 Jun 2026 0m away

    89% historically approved · decision due ~11 Aug

    Details of facing materials pursuant to condition 3 of listed building consent dated 19 May 2026 (RN: 25/08851/LBC).

    Decided

  • Devonshire House Mayfair Place London W1J 8AJ

    25/05061/ADFULL Submitted 21 Jul 2025 0m away

    Detailed drawings of the new doors pursuant to condition 6 of planning permission dated 13th February 2025 (RN:24/06627/FULL)

    Granted Full applications 9 docs

  • Devonshire House Mayfair Place London W1J 8AJ

    25/05178/ADLBC Submitted 21 Jul 2025 2m away

    Detailed drawings of the new doors pursuant to Condition 2 of listed building consent dated 13th February 2025 (RN:24/06628/LBC)

    Granted Conditions 9 docs

  • Second Floor (Excluding North East Part) Devonshire House Mayfair Place London W1J 8AJ

    26/05130/LBC Submitted 30 Jul 2026 14m away

    90% historically approved · decision due ~15 Oct

    Installation of two air conditioning condenser units to the second floor lightwell, two internal air conditioning units, and associated pipework. (Linked with 26/05129/FULL)

    Awaiting decision Heritage and listed buildings 7 docs

  • Devonshire House Mayfair Place London W1J 8AJ

    25/08851/LBC Submitted 5 Dec 2025 22m away

    90% historically approved · decision due ~30 Jan

    Replacement of existing terrace paving, strip lighting and exit signage as well as alterations to the balustrade fitting system and introduction of two access control bollards.

    Awaiting decision Heritage and listed buildings 16 docs

  • 51 Berkeley Street London W1J 8NL

    26/01614/LBC Submitted 12 Mar 2026 27m away

    90% historically approved · decision due ~14 May

    External and internal works including remove existing 3M white reverse cut vinyl texts and replace with suspended statutory signage. Decorations, New flooring to BOH behind self service wall, new secure partitions to fill in void, replace QSP with New Internal ATMs and associated data and power

    Awaiting decision Heritage and listed buildings 11 docs

In Westminster

  • 26/06024/FULL Awaiting decision

    House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA

    Installation of new and replacement electronic equipment within Speaker. (Linked with 26/06025/LBC)

    3 Sep 2026 Full applications
  • 26/06017/FULL Awaiting decision

    38 Lauderdale Mansions Lauderdale Road London W9 1NE

    Installation of an external AC Unit / Heat Pump at roof level.

    2 Sep 2026 Full applications
  • 26/05938/FULL Awaiting decision

    24 Vincent Square London SW1P 2NJ

    Subdivision of existing residential property to create two self-contained 3-bedroom family homes, along with cycle parking and associated external alterations.

    1 Sep 2026 Full applications
  • 26/05935/FULL Awaiting decision

    47 Hereford Road London W2 5AH

    Installation of one number new external condenser unit to the southerly elevation service alley.

    1 Sep 2026 Full applications
  • 26/05959/FULL Awaiting decision

    Basement And Ground Floor 50 New Bond Street London W1S 1BJ

    Installation of three new condensers on the roof, within an existing designated plant area.

    1 Sep 2026 Full applications