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Planning application

26/04046/FULL

25 Warrington Crescent London W9 1ED

Awaiting decision Westminster Full Planning Permission Application

Proposal

Internal and external alterations to the lower ground and ground floor maisonette, including internal reconfiguration, replacement windows and doors with conservation-style double glazing, and installation of air-source heat pumps with acoustic enclosure. (Linked to 26/04047/LBC)

As published by the council, reference 26/04046/FULL

Timeline

Dates from the published record

  1. 18 Jun 2026

    Received by Westminster

  2. 25 Jun 2026

    Validated

    Checked as complete and ready for consideration.

  3. 21 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

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

  • 26/04047/LBC Awaiting decision

    25 Warrington Crescent London W9 1ED

    Internal and external alterations to the lower ground and ground floor maisonette, including internal reconfiguration, replacement windows and doors with conservation-style double glazing, and installation of air-source heat pumps with acoustic enclosure. (Linked to 26/04046/FULL)

    18 Jun 2026 6m away Heritage and listed buildings
  • 26/04931/LBC Awaiting decision

    29 Warrington Crescent London W9 1EJ

    Insertion of additional steel support to failing internal communal staircase.

    23 Jul 2026 18m away Heritage and listed buildings
  • 25/05996/FULL Awaiting decision

    12A Warrington Crescent London W9 1EL

    Replacement of two rear elevation windows and doors. (Linked to 25/05997/LBC)

    22 Aug 2025 43m away Full applications
  • 25/05997/LBC Awaiting decision

    12A Warrington Crescent London W9 1EL

    Replacement of two rear elevation windows and doors. Internal works to include waterproofing on all walls up to 1.2m, the removal of all flooring including screed, repair failed waterproofing, reinstate floor with acoustic treatment (to isolate noise from underground trains), underfloor heating and then to reinstate existing skirting; replacement of all joinery will be replaced, works to lighting. (Linked to 25/05996/FULL)

    22 Aug 2025 44m away Heritage and listed buildings
  • 25/06008/LBC Awaiting decision

    12A Warrington Crescent London W9 1EL

    Installation of a new under stairs boiler enclosure at front lightwell. (Linked to 25/06007/FULL)

    22 Aug 2025 44m away Heritage and listed buildings
  • 25/06007/FULL Awaiting decision

    12A Warrington Crescent London W9 1EL

    Installation of a new under stairs boiler enclosure at front lightwell. (Linked to 25/06008/LBC)

    22 Aug 2025 45m away Full applications

In Westminster

  • 26/04824/ADFULL Granted

    New Zealand House 80 Haymarket London SW1Y 4TE

    Detailed design and specification of new blinds to NZH based on mock-up trials on-site. pursuant to condition 32 (i) of planning permission dated 8th April 2024 (23/00571/FULL).

    20 Jul 2026 Full applications
  • 26/04829/ADFULL Granted

    New Zealand House 80 Haymarket London SW1Y 4TE

    Details of external and internal signage strategy pursuant to Condition 33(E) of planning permission dated 8th April 2024 (RN: 23/00571/FULL)

    20 Jul 2026 Full applications
  • 26/04841/ADFULL Granted

    29 Henstridge Place London NW8 6QD

    Details 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 5 of planning permission dated 18th November 2025 (RN:25/06159).

    20 Jul 2026 Full applications
  • 26/04989/FULL Awaiting decision

    1 Kildare Terrace London W2 5JT

    Erection of a mansard roof extending over the main house and side wing, replacement lower ground rear extension with roof terrace above, lowering of lower ground floor slab, installation of an air source heat pump in rear garden, new front boundary treatment, and new second floor window on the north elevation.

    24 Jul 2026 Full applications
  • 26/04986/FULL Awaiting decision

    Inver Court Inverness Terrace London W2 6JB

    Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.

    24 Jul 2026 Full applications