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Planning application

26/01368/FULL

40 Eaton Square London SW1W 9DA

Awaiting decision Westminster Full Planning Permission Application

Proposal

Construction of freestanding garden room within rear garden (linked to 26/01369/LBC)

As published by the council, reference 26/01368/FULL

Timeline

Dates from the published record

  1. 4 Mar 2026

    Received by Westminster

  2. 9 Mar 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

  • 26/02269/TPO Awaiting decision

    Trees In Eaton Square London SW1W 9DA

    T230 - Platanus x hispanica (London Plane): Reduce faulted limb(s) - reducing the lowest limb to the north (attached at around 4 m) by approximately 7 m, retaining the two prominant branches (attached at around 2.5 and 3.5 m out from the primary union), due to significant decay and hollowing evidenced during recent decay investigations (see attached report). The second branch from the main union (at around 3.5 m), ascends and should form the new terminal section of the limb. Both retained branches should be left intact.

    7 Apr 2026 0m away Trees
  • 26/02474/LBC Awaiting decision

    Flat 4 6 Eaton Square London SW1W 9DA

    Installation of secondary glazing to flat four front elevation at second floor level.

    15 Apr 2026 0m away Heritage and listed buildings
  • 26/01369/LBC Awaiting decision

    40 Eaton Square London SW1W 9DA

    Construction of a freestanding garden room within rear garden (linked to 26/01368/FULL)

    4 Mar 2026 0m away Heritage and listed buildings
  • 25/09306/TCA Granted

    Trees In Eaton Square London SW1W 9DA

    1 x London plane (T228): Reduce the height of all apical stems in the upper crown by approximately 2m. 1 x London plane (T230): Remove Massaria limb with horizontal cracking at 6m above ground level.

    23 Dec 2025 0m away Trees
  • 25/08913/TCA Granted

    Trees In Eaton Square London SW1W 9DA

    2 x London planes (T889 and T892): Reduce crown by specified extent - reducing the tips of the lower and mid lateral branches over the road, to the most recent previous reduction points or suitable growth points no closer to the tree than in line with the centre of the carriageway. Retain selected furnishing growth at pruning points to maintain a flowing canopy outline and to minimise visual impact. Maximum diameter of final cuts to be no greater than 4 cm.

    8 Dec 2025 0m away Trees
  • 26/02595/TPO Awaiting decision

    Trees In Eaton Square London SW1W 9DA

    London Planes: T192: Massaria Climbing Inspection Report shows early stage Massaria on a large lower limb and developed Massaria on large upper crown limb removal required. T229: Massaria Climbing Inspection report shows early stage Massaria on a large limb removal required. T370: RVL necessary 3 months - large branch at 15m SE approx. 8m in length and 300mm in diameter. T381: RVL necessary 3 months - Massaria large limb at 8m SW approx. 10m out on lateral limb 6m in length, 200mm diameter, Also large limb at 7m NW 4.5m, 200mm in diameter, Also large limb at 16m NW over road 4m length, 200mm diameter T721: RVL necessary 3 months - Massaria limb at 9m, S, 5m length and approx 300mm diameter T728: RS00 necessary 3 months ? heavily reduce the large Massaria affected limb at 7m NE (the end of the long lateral branch alongside the pavement) by approx. 3.5 m to reduce loading and stabilise the limb allowing for further monitoring to evaluate the extent of development. T743: RS00 necessary 3 months ? reducing the extended terminal branches on the limb with the cavity at 15m to the west, and the large branch at 15m NE 150mm diameter, by approximately 2 m, to reduce loading on the decayed limb cavities, to minimise the potential for major limb failure within the garden square. T889: RL00 necessary 3 months ? reducing the terminal branches growing from the large limb at 10m N (with a cavity within the wound) 8m length 150mm, by approx. 2 m to reduce loading and minimise the potential for limb failure due to decay and cavities present. T921: RVL necessary 3 months - Large branch at 7m NE 4m in length and 450mm diameter attached beneath main union of tree. T959: RVL necessary 3 months - large Massaria limb at 12m SW 8m length and 300mm diameter

    20 Apr 2026 0m away Trees

In Westminster

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  • 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

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