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Planning application

26/01758/CLEUD

5 Eaton Place London SW1X 8BN

Awaiting decision Westminster Certificate of Lawfulness (existing)

Proposal

Confirmation that planning permission dated 22 March 2024 (23/08901/FULL) has been lawfully implemented by the carrying out of the following works: removal of the existing window and demolition of a section of the wall to the existing master bedroom to the south of the garden, removal of a door from the existing internal corridor to the east of the garden, and the excavation of the ground at the rear of the property in preparation for the provision of foundations and the installation of drainage infrastructure for the approved rear lower ground floor extension.

As published by the council, reference 26/01758/CLEUD

Timeline

Dates from the published record

  1. 18 Mar 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. 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 lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • 25/05844/ADLBC Granted

    5 Eaton Place London SW1X 8BN

    Details of a revised lower ground floor plan showing the areas where damp proofing works are proposed, including justification (i.e. moisture survey) and detailed section drawings showing the type proposed, pursuant to condition 13 of listed building consent dated 25th March 2025 (RN: 23/08902/LBC)

    18 Aug 2025 0m away Conditions
  • 25/05846/ADFULL Granted

    5 Eaton Place London SW1X 8BN

    Detailed drawings of the doors to rear lower ground floor extension pursuant to Condition 4 (ii) of planning permission dated 22 March 2024 (RN: 23/08901/FULL).

    18 Aug 2025 0m away Full applications
  • 25/05845/ADLBC Awaiting decision

    5 Eaton Place London SW1X 8BN

    Detailed drawings of doors to rear lower ground floor extension pursuant to part conditions 3 ii of listed building consent dated 25th March 2024 (RN 23/08902/LBC)

    18 Aug 2025 0m away Conditions
  • 26/01032/CLOPUD Granted

    1 Eaton Place London SW1X 8BN

    Confirmation that the planning permission dated 31 May 2023 (RN: 23/01837/FULL) for the 'amalgamation of six self contained flats plus common parts to form a single family dwelling and rebuilding of the existing garage' was lawfully implemented prior to the expiration date and that it is lawful to complete the outstanding works.

    18 Feb 2026 31m away Lawful development
  • 25/08400/ADFULL Awaiting decision

    34 Belgrave Mews South London SW1X 8BT

    Details of a validation report pursuant to condition 5 (4) of planning permission dated 8th February 2024 (RN:23/08449/FULL)

    17 Nov 2025 34m away Full applications
  • 26/00644/NMA Awaiting decision

    1 - 3 Belgrave Mews South London SW1X 8BT

    Amendments to planning permission dated 27 August 2024 (RN:24/03215/FULL) for demolition behind retained front facade and construction of replacement house including replacement rear extension and terrace at lower height with new shallow balcony at second floor level; replacement of the fenestration and the roof of the existing mansard to include inset PV panels and an enclosed plant deck; and reposition front door with shallower porch. namely, amendment to front door and garage door to the front elevation at ground floor level.

    4 Feb 2026 34m away Amendments

In Westminster

  • 26/04958/CLEUD Awaiting decision

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    Use of a building as mixed use as C3 (single residential dwelling) and C1 (short-stay accommodation)

    24 Jul 2026 Lawful development
  • 26/04971/CLOPUD Awaiting decision

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    Replacement of the existing single-glazed moving window sashes, casement panels, and balcony door leaves with slimline double-glazed timber units. The existing outer timber frames fixed into the building will be retained and will not be removed or altered. The replacement units will match the existing windows in material, design, glazing bar pattern, opening method, dimensions, and external appearance. No alterations are proposed to the building structure, external walls, openings, or window frame sizes. No new access, alterations to existing access, new streets, hardstandings, means of enclosure, or drainage works are proposed. The precise location and details of the replacement windows are shown on the accompanying drawings.

    24 Jul 2026 Lawful development
  • 26/04832/CLEUD Awaiting decision

    Basement Flat 117 Kilburn Park Road London NW6 5LB

    Use or Development in respect of the detached single-storey outbuilding within the rear garden of the applicants property.

    20 Jul 2026 Lawful development
  • 26/04856/CLOPUD Awaiting decision

    Flat 15 192 Emery Hill Street London SW1P 1PN

    Replacement of the existing single-glazed moving sashes, casement panels, and balcony door leafs with slimline double glazed timber units within the fully retained existing external timber frames.

    20 Jul 2026 Lawful development
  • 26/04632/CLOPUD Awaiting decision

    165 Oliphant Street London W10 4EA

    Installation of solar panels to generate clean, renewable energy from sunlight and reduce reliance on grid electricity and fossil fuels.

    10 Jul 2026 Lawful development