Planning application
15 St Leonard's Terrace, London, SW3 4QG
Works: Extension Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Variation of Condition 2 (Compliance with approved drawings) of planning permission PP/21/05028 (Alterations at rear including extension at lower ground level; extension at ground floor level; creation of green wall; replacement of window with door at first floor level, alterations at front including installation of glazed fanlight and glazing bar, entrance light, house number and replacement of railings and gate with spear heads. Internal alterations including lowering at lower ground floor level and reconfiguration of layout) for alterations to consented scheme in response to changes required following design and interior design input.
As published by the council, reference PP/25/05025
Application record
- Reference
- PP/25/05025
- Type
- Planning Permission
- Status
- Decided
- Decision
- Grant Planning Permission/Consent
- Received
- 14 Aug 2025
- Decided
- 9 Oct 2025
- Ward
- Royal Hospital
- Parish
- 16
- Postcode
- SW3 4QG
Site history
Applications at this address on the Kensington and Chelsea register
This site has had 4 applications since 2025: 3 approved, 0 refused.
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NMA/26/02335 Decided
15 St Leonard's Terrace, London, SW3 4QG
Non-material amendment to planning permission PP/25/05025 (Variation of Condition 2 (Compliance with approved drawings) of planning permission PP/21/05028 (Alterations at rear including extension at lower ground level; extension at ground floor level; creation of green wall; replacement of window with door at first floor level, alterations at front including installation of glazed fanlight and glazing bar, entrance light, house number and replacement of railings and gate with spear heads. Internal alterations including lowering at lower ground floor level and reconfiguration of layout) for alterations to consented scheme in response to changes required following design and interior design input) to incorporate alterations to lower ground floor, addition of new ground floor doorbell following relocation of w/c.
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LB/26/02161 Granted
15 St Leonard's Terrace, London, SW3 4QG
Listed building consent for internal and minor external alterations including revisions to the laundry and W/C layout at lower ground floor, new cable route for doorbell installation at ground floor, new W/C and steps within the closet wing with removal of brickwork nib and installation of a wall-mounted LED light at first floor, and change of use of a consented bathroom to a study at second floor level.
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CON/25/05064 Granted
15 St Leonard's Terrace, London, SW3 4QG
Discharge part b) of condition 3 of LB/25/03887 on the basis that the details were already discharged under CON/24/05804 (approved 22/10/24). These details were also annotated on the approved drawings for LB/25/03887 `as approved'. i.e., `Dekton solid porcelain cladding to extension roof form and facade Colour: Domoos [Black] As approved.' Please refer to the previous approval for the rear extension material details
Timeline
Dates from the published record
-
14 Aug 2025
Received by Kensington and Chelsea
-
9 Oct 2025
Decision issued: Grant Planning Permission/Consent
-
20 Jul 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
1 later application on the register refers to this one:
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NMA/26/02335 Decided
15 St Leonard's Terrace, London, SW3 4QG
Non-material amendment to planning permission PP/25/05025 (Variation of Condition 2 (Compliance with approved drawings) of planning permission PP/21/05028 (Alterations at rear including extension at lower ground level; extension at ground floor level; creation of green wall; replacement of window with door at first floor level, alterations at front including installation of glazed fanlight and glazing bar, entrance light, house number and replacement of railings and gate with spear heads. Internal alterations including lowering at lower ground floor level and reconfiguration of layout) for alterations to consented scheme in response to changes required following design and interior design input) to incorporate alterations to lower ground floor, addition of new ground floor doorbell following relocation of w/c.
Documents
Plans, drawings, consultee responses and the officer's report
22 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.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Kensington and Chelsea granted permission on 9 October 2025, 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 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 500 metres
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15 St Leonard's Terrace, London, SW3 4QG
Discharge part b) of condition 3 of LB/25/03887 on the basis that the details were already discharged under CON/24/05804 (approved 22/10/24). These details were also annotated on the approved drawings for LB/25/03887 `as approved'. i.e., `Dekton solid porcelain cladding to extension roof form and facade Colour: Domoos [Black] As approved.' Please refer to the previous approval for the rear extension material details
Granted Conditions Extension 6 docs -
24 St Leonard's Terrace, London, SW3 4QG
96% historically approved · decision due ~16 Sep
Lowering floor level within storage space, formation of opening between vault and storage space to provide internal access, extension of entrance step at ground floor level
Awaiting decision Heritage and listed buildings Extension 11 docs -
16 St Leonard's Terrace, London, SW3 4QG
Replacement windows and doors, remodelling of rear extension to form garden room with projecting bay and bifold doors, creation of glazed connection to garden room, new glazed rooflight and removal of perimeter roof lights and railings, creation of spiral wine cellar and external electric charging point
Granted Heritage and listed buildings Extension Loft or dormer +1 49 docs -
16 St Leonard's Terrace, London, SW3 4QG
Replacement windows and doors, remodelling of rear extension to form garden room with projecting bay and bifold doors, creation of glazed connection to garden room, new glazed rooflight and removal of perimeter roof lights and railings, creation of spiral wine cellar and external electric charging point
Granted Full applications Extension Loft or dormer +1 52 docs -
29 St Leonard's Terrace, London, SW3 4QG
Prune 1 x Magnolia (front) and 1 x Ginkgo/Maidenhair (rear)
Granted Trees 7 docs -
19 St Leonard's Terrace, London, SW3 4QG
Details required by Condition 3 (Submission of details) of Listed Building Consent LB/20/00855 (Construction of full width rear extension at basement level. Removal of metalwork stair and balcony. Window alterations on rear elevation. Addition of mansard roof extension. Alterations to interior layout. Retention of internal panelled doors, stair and balustrade)
Granted Conditions Extension Loft or dormer +1 11 docs
Other full applications
In Kensington and Chelsea
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PP/18/01985 Withdrawn
Flat 3, 24 Cornwall Gardens, London, SW7 4AW
Works to second floor flat including erection of rear extension, creation of external roof terrace areas above and to rear of said extension (with perimeter metal railings), together with internal alterations including removal of internal wall between kitchen and living room, and other refurbishment works
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PP/26/03176 Granted
12 Shawfield Street, London, SW3 4BD
Replacement windows, new rooflight and replacement lower ground rear rooflights.
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PP/26/03048 Granted
24 Charles II Place, London, SW3 4NG
Removal of existing conservatory structure. Construction of a single-storey rear extension at lower ground floor level. Installation of a contemporary three-panel sliding glazed door opening onto rear garden. Internal reconfiguration at lower ground floor level.
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PP/26/03042 Granted
Flat 7, 7 Egerton Place, London, SW3 2EF
Installation of air conditioning system including external condenser unit housed within enclosure at roof level. Replacement of roof lantern, rooflight and roof access hatch with flat glazed access hatch and rooflights. Replacement of two rear elevation uPVC windows with timber-framed slimline double-glazed sliding sash windows; and associated external alterations.
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PP/26/02897 Withdrawn
46 Evelyn Gardens, London, SW7 3BH
Positioning of two new external heat pump condensers within two separate acoustic enclosures, one on main roof of house and other on rear forth floor roof terrace.