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Planning application

21 Carlyle Square, London, SW3 6EY

Granted Kensington and Chelsea CL/25/06114 Certificates Lawful Proposed Use or Dev.

Works: Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Replacement of existing timber windows for double glazed timber windows, without any change in appearance and design, on all elevations (Certificate of Proposed Development/Use)

As published by the council, reference CL/25/06114

Application record

Reference
CL/25/06114
Type
Certificates Lawful Proposed Use or Dev.
Status
Decided
Decision
Granted As published: Grant Planning Permission/Consent
Received
6 Oct 2025
Decided
2 Apr 2026
Ward
Stanley
Parish
18
Postcode
SW3 6EY

Site history

Applications at this address on the Kensington and Chelsea register

This site has had 2 applications since 2025: 2 approved, 0 refused.

  • PP/25/06108 Granted

    21 Carlyle Square, London, SW3 6EY

    Replacement of rear ground floor windows to doors; rear door replacement; raised rear balcony balustrade; insertion of front lightwell railing and gate; replacement side access gate; basement window grilles; and new Crittall-style replacement windows.

    Decided 12 Mar 2026 Full applications

Timeline

Dates from the published record

  1. 6 Oct 2025

    Received by Kensington and Chelsea

  2. 2 Apr 2026

    Decision issued: Grant Planning Permission/Consent

  3. 20 Jul 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

21 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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Open the documents

What this grant of permission means

Kensington and Chelsea granted permission on 2 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 21 Carlyle Square, London, SW3 6EY

    PP/25/06108 Submitted 13 Oct 2025 50 yards away

    Replacement of rear ground floor windows to doors; rear door replacement; raised rear balcony balustrade; insertion of front lightwell railing and gate; replacement side access gate; basement window grilles; and new Crittall-style replacement windows.

    Granted Full applications Windows or glazing 26 docs

  • 20 Carlyle Square, London, SW3 6EY

    ARB/25/05967 Submitted 3 Oct 2025 50 yards away

    Prune 1x Magnolia (Magnolia spp) at front

    Granted Trees 6 docs

  • 21A Carlyle Square, London, SW3 6EY

    PP/25/05635 Submitted 15 Sep 2025 50 yards away

    Removal of condition 2 (use of roof as terrace precluded) and variation of condition 1 (approved drawings) of planning permission 21/03923 to allow the roof of the rear extension to be used as a roof terrace

    Granted Full applications Extension 25 docs

  • 22 Carlyle Square, London, SW3 6EY

    ARB/23/06467 Submitted 4 Oct 2023 50 yards away

    Prune 1 x Magnolia (front)

    Granted Trees 6 docs

  • 19 Carlyle Square, London, SW3 6EY

    PP/26/03140 Submitted 15 Jun 2026 50 yards away

    Replacement of existing windows on front, side and rear elevations with like for like double glazed windows.

    Granted Full applications Windows or glazing 26 docs

  • 24 Carlyle Square, London, SW3 6EY

    ARB/26/00721 Submitted 21 Jan 2026 50 yards away

    Prune 1x mature Maple

    Granted Trees 6 docs

In Kensington and Chelsea

  • CL/26/01267 Granted

    1 Bray Place, London, SW3 3LL

    Confirmation that the existing structure at no. 27 Coulson Street / 1 Bray Place was built in the early 1970s as a single development over three floors (basement to first floor) after the demolition of a previous infill building in 1971 (Certificate of Lawful Existing Use)

    Received 9 Mar, published by the council 1 Aug 2026 Lawful development
  • CL/26/02700 Granted

    27 Lansdowne Road, London, W11 3AG

    Provision of lead flashing to parapet/cornice lines and painting of windows and existing painted areas of the building in soft white (Certificate of Proposed Use/Development).

    Received 19 May, published by the council 20 Jul 2026 Lawful development
  • CL/26/02515 Granted

    Flats A and C, 61 Holland Park, London, W11 3SJ

    Reconfiguration of the accommodation at Flat A and Flat C to create one four-bed dwelling and one one-bed dwelling (Certificate of Lawful Proposed Development / Use)

    Received 6 May, published by the council 1 Aug 2026 Lawful development
  • CL/26/03998 Awaiting decision

    87 Addison Road, London, W14 8ED

    Confirmation that the existing A/C Units & Screening to the north and south sides on the flat roofs at ground and first floor levels are lawful (Certificate of Lawful Existing Use/Development)

    Received 23 Jul, published by the council 3 Aug 2026 Lawful development
  • CL/26/04000 Awaiting decision

    191 Freston Road, London, W10 6TH

    Confirmation that the use of the property as Class F1(a) (Education) is lawful (Certificate of Lawful Existing Use/Development)

    Received 23 Jul, published by the council 3 Aug 2026 Lawful development