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Planning application

25 Abbey Road London NW8 9AU

Awaiting decision Westminster 26/05238/FULL Full applications

Works: Extension

Relates to 26/05239/LBC

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

Proposal

The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05239/LBC)

As published by the council, reference 26/05238/FULL

Application record

Reference
26/05238/FULL
Category
Full applications
Status
Pending
Received
3 Aug 2026
Validated
14 Aug 2026
Postcode
NW8 9AU

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2026.

  • 26/06116/FULL Awaiting decision

    25 Abbey Road London NW8 9AU

    The construction of front and rear extensions at lower ground floor level; installation of air source heat pump within an acoustic enclosure to the rear; together with associated internal alterations; localised lowering and insulation of the basement floor; formation of new openings; repairs to the existing historic fabric; and landscaping works. (Linked with 26/06117/LBC)

    Submitted 8 Sep 2026 Full applications
  • 26/06117/LBC Awaiting decision

    25 Abbey Road London NW8 9AU

    The construction of front and rear extensions at lower ground floor level; installation of air source heat pump within an acoustic enclosure to the rear; together with associated internal alterations; localised lowering and insulation of the basement floor; formation of new openings; repairs to the existing historic fabric; and landscaping works. (Linked with 26/06116/FULL)

    Submitted 8 Sep 2026 Heritage and listed buildings
  • 26/05239/LBC Awaiting decision

    25 Abbey Road London NW8 9AU

    The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05238/FULL)

    Submitted 3 Aug 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 3 Aug 2026

    Received by Westminster

  2. 14 Aug 2026

    Validated

    Checked as complete and ready for consideration.

  3. 14 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 9 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 86 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 26/05239/LBC Awaiting decision

    25 Abbey Road London NW8 9AU

    The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05238/FULL)

    Submitted 3 Aug 2026 Heritage and listed buildings

1 later application on the register refers to this one:

  • 26/05239/LBC Awaiting decision

    25 Abbey Road London NW8 9AU

    The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05238/FULL)

    Submitted 3 Aug 2026 Heritage and listed buildings

What happens while it is decided

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 119 days. More in our guide to how long planning decisions take.

About full applications

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.

Nearby applications

Within 0.3 miles

  • 25 Abbey Road London NW8 9AU

    26/05239/LBC Submitted 3 Aug 2026 50 yards away

    90% historically approved · decision due ~9 Oct

    The construction of front and rear extensions at lower ground floor level, together with associated internal alterations, localised lowering and insulation of the basement floor, formation of new openings, repairs to the existing historic fabric, and landscaping works. (Linked with 26/05238/FULL)

    Awaiting decision Heritage and listed buildings Extension

  • 25 Abbey Road London NW8 9AU

    26/06116/FULL Submitted 8 Sep 2026 50 yards away

    88% historically approved · decision due ~7 Dec

    The construction of front and rear extensions at lower ground floor level; installation of air source heat pump within an acoustic enclosure to the rear; together with associated internal alterations; localised lowering and insulation of the basement floor; formation of new openings; repairs to the existing historic fabric; and landscaping works. (Linked with 26/06117/LBC)

    Awaiting decision Full applications Extension

  • 25 Abbey Road London NW8 9AU

    26/06117/LBC Submitted 8 Sep 2026 50 yards away

    90% historically approved · decision due ~7 Dec

    The construction of front and rear extensions at lower ground floor level; installation of air source heat pump within an acoustic enclosure to the rear; together with associated internal alterations; localised lowering and insulation of the basement floor; formation of new openings; repairs to the existing historic fabric; and landscaping works. (Linked with 26/06116/FULL)

    Awaiting decision Heritage and listed buildings Extension

  • First Floor And Second Floor Maisonette 25 Abbey Road London NW8 9AU

    25/07586/FULL Submitted 20 Oct 2025 50 yards away

    Amalgamation of two flats to reinstate a single family dwelling and associated external alterations. (Linked to 25/07587/LBC)

    Granted Full applications New dwelling 14 docs
    Several homes

  • First Floor And Second Floor Maisonette 25 Abbey Road London NW8 9AU

    25/07587/LBC Submitted 20 Oct 2025 50 yards away

    Amalgamation of two flats to reinstate a single family dwelling and associated internal and external alterations. (Linked to 25/07586/FULL)

    Granted Heritage and listed buildings New dwelling 11 docs
    Several homes

  • 23-25 Abbey Road London NW8 9AU

    23/04012/LBC Submitted 14 Jun 2023 50 yards away

    Erection of dormer windows to side and rear roof slopes of 23 and 25 Abbey Road and internal alterations at 2nd floor levels to create access to new loft spaces. (Linked with 23/04011/FULL)

    Granted Heritage and listed buildings Loft or dormer Windows or glazing 17 docs

In Westminster

  • 26/05984/FULL Decided

    41 Sutherland Street London SW1V 4JX

    Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

    Received 2 Sep, published by the council 11 Sep 2026 Full applications
  • 26/07224/FULL Awaiting decision

    8 Hinde Street London W1U 3BQ

    Use of the building as an Embassy (sui generis) with reversion to Class E on cessation of occupation by the Government of the United Mexican States. Erection of a flagpole and flag and plaque

    Received 22 Oct, published by the council 26 Oct 2026 Full applications
  • 26/06134/FULL Decided

    Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

    Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

    Received 8 Sep, published by the council 15 Sep 2026 Full applications
  • 26/07258/FULL Awaiting decision

    16A Croxley Road London W9 3HL

    Installation of air to air heat pumps to offices and bedrooms.

    Received 22 Oct, published by the council 23 Oct 2026 Full applications
  • 26/07193/FULL Awaiting decision

    98 Victoria Street London SW1E 5JL

    Shopfront alterations. (Linked with 26/07194/ADV)

    Received 21 Oct, published by the council 22 Oct 2026 Full applications